Saturday, December 12, 2020

Solar System 'superhighway' could speed up space travel

Scientists found the routes by computing how "millions" of Solar System orbits fit inside known space manifolds, or arch structures that extend from the asteroid belt.

Nasdaq said on Friday it will remove shares of four Chinese construction and manufacturing companies from indexes it maintains in response to a U.S. order restricting purchase of their shares. The securities, which are not traded on the Nasdaq exchange, will be removed from the indexes on Dec. 21. A White House executive order last month barred U.S. investors from buying securities of blacklisted firms, starting in November 2021.

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In case you are keeping track:

Studies offer tips on lessening spaceflight-related risk | Cornell Chronicle

The Earth's atmosphere, featuring the aurora borealis, is pictured from the International Space Station.

Space travel, illnesses like COVID-19 and climbing Mount Everest can trigger the body's stress response systems in similar ways, according to new studies by Weill Cornell Medicine, space agencies and other investigators.

The discoveries , including new maps of the abundance of mutations and immune changes found in blood cells during spaceflight, may lead to new ways to protect space travelers. They may also provide insights on caring for Earth-bound patients with illnesses that trigger similar physiological responses.

Publisher: Cornell Chronicle
Twitter: @CornellNews
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Virgin Galactic stops space travel effort in New Mexico

The Virgin Galactics’ latest spaceflight did not fully burn out as the engine of its spaceship vehicle “Unity” attempted to fly over New Mexico on Saturday.

In the absence of any passengers, C.J. Directed by Starkov and Dave McKay. The Virgin Galactic aims to reach the edge of space for the third time, from its operating base in New Mexico on its maiden spaceflight. The spacecraft returned to the runway in the Spaceport United States, about 50 miles north of Los Cruces.

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Publisher: DodoFinance
Date: 2020-12-12T17:46:51 00:00
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The start of the Sensoria M3 lunar mission is like Groundhog Day — Commander's Report: Lunar Day

Dr. Michaela Musilova is the director of Hawaii Space Exploration Analog and Simulation ( HI-SEAS ) program, which conducts analog missions to the moon and Mars for scientific research at a habitat on the volcano Mauna Loa. Currently, she is in command of the two-week Selene II mission and contributed this report to Space.com's Expert Voices: Op-Ed & Insights .

* * *

My space-lag is also a bit emotional. I'm still getting over saying goodbye to the wonderful Selene II crew and creating space in my heart to accommodate my new space family of SENSORIA M3. The mission is part of the SENSORIA Program, which aims to support underrepresented groups within the space sector. This transition time is never easy, but I'm sure that I'll get through this easily with the support of my lunar friends.

Publisher: Space.com
Date: 2020-12-10T12:20:19 00:00
Author: https www facebook com spacecom
Twitter: @SPACEdotcom
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In case you are keeping track:

DNA: Analysis of the future of space travel
Publisher: DNA India
Date: 2020-12-11T10:50:15 05:30
Author: DNA Video Team
Twitter: @dna
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Fiery crash of SpaceX's Starship rocket ignites dreams of future spaceflight

SpaceX's Starship prototype, Serial Number 8 (SN8), takes off over Boca Chica Beach in South Texas on December 9. The 165-foot craft crashed on landing but generated enough data to be considered a resounding success.

* * *

The engines ignited with a burst of fiery exhaust, kicking up a bloom of brown dust, as the 165-foot-tall rocket, known as Serial Number 8 (SN8), made its way into the blue sky over Boca Chica Beach, outside Brownsville, Texas. The prototype seemed to stagger under its 110-ton weight, despite a trio of engines—each producing half a million pounds of thrust—propelling it through the air.

Publisher: Science
Date: 2020-12-10T10:22:00-0500
Twitter: @NatGeo
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Fruit flies reveal new insights into space travel's effect on the heart | EurekAlert! Science News

IMAGE:  Karen Ocorr, Ph.D., assistant professor in Sanford Burnham Prebys' Development, Aging and Regeneration Program and Neuroscience and Aging Research Center view more 

* * *

"For the first time, we can see the cellular and molecular changes that may underlie the heart conditions seen in astronaut studies," says Karen Ocorr, Ph.D. , assistant professor in the Development, Aging and Regeneration Program at Sanford Burnham Prebys and co-senior author of the study. "We initiated this study to understand the effects of microgravity on the heart, and now we have a roadmap we can use to start to develop strategies to keep astronaut hearts strong and healthy."

Publisher: EurekAlert!
Date: 2020-11-25 05:00:00 GMT/UTC
Twitter: @EurekAlert
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USGS Supports the 2020 National Space Policy

"The USGS plays a key role in America's space exploration efforts, from mapping Earth's critical minerals, monitoring hazards, mapping critical environments, and characterizing our lands and resources," said Reilly. "In addition, we continue to support our NASA colleagues in extra-terrestrial mapping of the Moon and Mars and provide mapping support for those missions, the latest of which is the Perseverance Rover set to land on Mars on February 18 next year."

* * *

In all these activities, the USGS will leverage new commercial and international space capabilities in partnerships to deliver actionable information at scales and timeframes relevant to decision makers.

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Happening on Twitter

Water on Mars not as widespread as previously thought -- ScienceDaily

Water on Mars, in the form of brines, may not be as widespread as previously thought, according to a new study by researchers at the Arkansas Center for Space and Planetary Sciences.

Researchers combined data on brine evaporation rates, collected through experiments at the center's Mars simulation chamber, with a global weather circulation model of the planet to create planetwide maps of where brines are most likely to be found.

The scientists took all major phase changes of liquids into account -- freezing, boiling and evaporation -- instead of just a single phase, as has commonly been the approach in the past, said Vincent Chevrier, associate professor and first author of a study published in The Planetary Science Journal . Former U of A doctoral students Edgard G. Rivera-Valentín and Travis S. Altheide were coauthors of the paper.

Publisher: ScienceDaily
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In case you are keeping track:

Heat and Dust Help Launch Martian Water Into Space, Scientists Find | NASA
Publisher: NASA
Date: 2020-11-12T10:50-05:00
Twitter: @11348282
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'Mars, here we come!' SpaceX wows with Starship's most daring (and explosive) test flight yet

The internet collectively picked its jaw up off the floor Wednesday as SpaceX launched a prototype of its Starship spaceship from Texas, performing an aerial wonder and then come back down for a fiery landing.

After the first attempt Tuesday was scrubbed at the last second, SpaceX tried again Wednesday to test its latest Starship prototype known as SN8 from the company's Boca, Chica, Texas launch site.

Around 5:40 p.m. ET the shiny towering Starship ascended from the pad, slowly using its three Raptor engines. The goal was to reach around 50,000 feet, the highest yet for any Starship test flight.

Publisher: WKMG
Date: 2020-12-10T00:45:12.153Z
Author: Emilee Speck
Twitter: @WKMG
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Euro-Russian Mars rover mission takes shape - BBC News

.css-14iz86j-BoldText{font-weight:bold;} A key milestone has been reached in the preparations for the joint European and Russian mission to Mars, scheduled for launch from Earth in 2022.

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The UK-assembled robot is seen sitting atop the lander in a folded configuration - as it will be for the journey to, and the touchdown on, Mars.

The capsule's job will be to protect the Franklin robot and Kazachok platform from the searing heat that is encountered on entry into Mars' atmosphere. The cruise module is the vehicle that shepherds the whole mission to the Red Planet after launch.

Publisher: BBC News
Author: https www facebook com bbcnews
Twitter: @BBCWorld
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While you're here, how about this:

Making Mars the new Earth; FGCU researches what it would take

Researchers at Florida Gulf Coast University are working to figure out what it would take for us to call the Red Planet home.

The university’s department of construction management is looking into the type of energy that would be the most effective, and the best types of buildings.

We’ve mapped the entire Earth. Now, space is the final frontier, with NASA working to send astronauts to Mars by the year 2030.

Dr. Hashem Izadi Moud, an assistant professor at FGCU said, “Solar energy is our best bet to actually start construction processes and building houses on the moon or Mars.”

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Publisher: WINK NEWS
Date: 2020-12-10T20:56:49-05:00
Twitter: @winknews
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Sols 2965-2966: Meteorite or Meteor-wrong? – NASA's Mars Exploration Program

Curiosity hits the road again today, heading towards the contact with a rubbly-looking geologic unit on the way up Mount Sharp. In the middle of today’s drive, Curiosity will make a pit stop to look at a large, dark, shiny boulder called “Island Davaar” with the Mastcam filter set. The boulder, which is visible in the distance from our current position (it’s in the center of the Navcam image above), does not look like any other rocks in the surrounding landscape.

Before driving, Curiosity will wrap up some science observations from her current location, including APXS and MAHLI observations of the bedrock target “Achnasheen,” ChemCam LIBS observations on two other rock targets (“Rattray” and “White Coomb”), and Mastcam imaging of regions in front of the rover and out towards the horizon.

Publisher: NASA's Mars Exploration Program
Author: Melissa Rice
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Water on Mars not as widespread as previously thought, study finds | EurekAlert! Science News

IMAGE:  Researcher Rachel Slank works with the university's Mars chamber. view more 

* * *

FAYETTEVILLE, Ark. - Water on Mars, in the form of brines, may not be as widespread as previously thought, according to a new study by researchers at the Arkansas Center for Space and Planetary Sciences.

Researchers combined data on brine evaporation rates, collected through experiments at the center's Mars simulation chamber, with a global weather circulation model of the planet to create planetwide maps of where brines are most likely to be found.

Publisher: EurekAlert!
Date: 2020-12-10 05:00:00 GMT/UTC
Twitter: @EurekAlert
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Earth faster, closer to Milky Way black hole, than previously thought | Space | EarthSky

A new survey of our galaxy by astronomers with VERA in Japan has shown that Earth is both moving faster and is closer to the supermassive black hole at the center of our galaxy than previously thought. But don’t worry, our planet is safe!

A new survey of the Milky Way from Japan suggests our Earth and solar system are both moving faster and residing closer to our Milky Way galaxy’s central, supermassive black hole than astronomers had realized. Image via NAOJ .

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Publisher: EarthSky
Date: 2020-12-05T06:30:49-06:00
Author: Paul Scott Anderson
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This may worth something:

Physics professor advances research on black hole paradox | Cornell Chronicle

Thomas Hartman, right, associate professor of physics, and Amirhossein Tajdini, Ph.D. '20, diagram in 2019 a replica wormhole, a concept associated with quantum gravity. They were two authors of "Replica Wormholes and the Entropy of Hawking Radiation," a paper important to recent progress on the black hole paradox.

* * *

For decades, physicists have theorized on this high-stakes question. At the heart of the so-called "black hole information paradox" is a fundamental incompatibility between the two pillar theories of theoretical physics: general relativity and quantum mechanics.

Publisher: Cornell Chronicle
Twitter: @CornellNews
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Black Holes Gain new Powers When They Spin Fast Enough - Universe Today

This property is often summarized by the no-hair theorem. Specifically, the theorem asserts that once matter falls into a black hole, the only characteristic that remains is mass. You could make a black hole out of a Sun’s worth of hydrogen, chairs, or those old copies of National Geographic from Grandma’s attic, and there would be no difference. Mass is mass as far as general relativity is concerned.

But with all its predictive power, general relativity has a problem with quantum theory. This is particularly true with black holes. If the no-hair theorem is correct, the information held within an object is destroyed when it crosses the event horizon. Quantum theory says that information can never be destroyed. So the valid theory of gravity is contradicted by the valid theory of the quanta.

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Publisher: Universe Today
Date: 2020-12-10T16:05:23-05:00
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California EDD’s Jobless Claims Still A ‘Black Hole,’ Lawmakers Say – CBS

SACRAMENTO, Calif. (AP/CBS13) — An attempt by California’s Employment Development Department to stem an unemployment benefits scam potentially exceeding $2 billion while reducing a frustrating backlog is failing, two state lawmakers from opposing political parties said Thursday, though others reported fewer problems.

Democratic Assemblywoman Cottie Petrie-Norris, who heads the Assembly Accountability and Administrative Review Committee, said she is seeing “a continued pattern of constituents who get lost in the process.”

Date: 2020-12-10T15:44:03 00:00
Author: https www facebook com CBSSacramento
Twitter: @/cbssacramento
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Not to change the topic here:

Kyle Walker-Peters: 'I wanted a black hole to just swallow me up' | Football | The Guardian

Kyle Walker-Peters is flat out on the Camp Nou turf. Ousmane Dembélé has just robbed him on the halfway line and run away to score. Barcelona are 1-0 up. Tottenham are heading out of the Champions League. And at this very moment – 9.07pm on 11 December 2018 – a 21-year-old right-back has hit rock bottom.

Two years on, Walker-Peters is reliving the experience. "I wanted a black hole to just swallow me up," he says. "I was laying on the floor. And I remember Danny Rose picking me up. Harry Kane said to me: 'Don't worry, you're playing well, we're fine, keep going.' It was a big, big moment for me."

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Publisher: the Guardian
Date: 2020-12-12T15:01:14.000Z
Author: Jonathan Liew
Twitter: @guardian
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Councils struggling with 'data black hole' in face of net zero targets

The Demos/Survation survey, commissioned by Icebreaker One, polled 1,061 UK councillors to understand how well councils are responding to the climate and economic crises.

The results suggest that a 'black hole' in the data held by and available to local authorities is threatening their ability to respond to the Covid-19 economic crisis, as well as meet net zero targets.

* * *

The survey also found that whilst councils most frequently consult their own data (73%), nearly 50% (48%) also rely on private sector data to inform decisions around achieving net zero.

Publisher: Circular Online
Date: 2020-12-11T11:13:25 00:00
Author: local authorities
Twitter: @CIWM
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China launches gamma ray–hunting satellites to trace sources of gravitational waves | Science |

The China National Space Administration's Chang'e-5 mission, set to return Moon rocks to Earth next week, has grabbed headlines around the world. But China's other space agency, the science-focused National Space Science Center (NSSC) of the Chinese Academy of Sciences (CAS), is making news of its own: Just after 4 a.m.

GECAM's two small satellites—130 centimeters tall and weighing 150 kilograms—are now in identical 600-kilometer-high orbits, but on opposite sides of Earth. From these perches they will watch for the gamma ray bursts that emanate from the merger of ultradense objects, events that also generate gravitational waves, ripples in space-time.

Publisher: Science | AAAS
Date: 2020-12-10T10:35:00-05:00
Author: Dennis Normile
Twitter: @newsfromscience
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Supreme Court correctly said Texas offered a legal black hole

The Supreme Court on Friday night essentially told Texas to stay in its lane, and the rule of law has thus been reconfirmed.

Texas Attorney General Ken Paxton had urged the court to throw out the apparent election results from four states that President Trump lost relatively narrowly to Joe Biden. He laid out a host of explanations for why he thought fraud and error had occurred in those states to an extent greater than Biden's margin of victory. Some of those allegations had a certain plausibility, while others were absurd.

Publisher: Washington Examiner
Date: 2020-12-12T00:46:01.368
Author: https www washingtonexaminer com author quin hillyer
Twitter: @DCExaminer
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Happening on Twitter

National Geographic's 'Return to the Moon' to chronicle NASA's Artemis astronauts and lunar

National Geographic has announced an ambitious new series that will chronicle NASA's attempt to send the next man and first woman to the moon .

The new show, aptly titled "Return To The Moon" , will follow NASA astronauts, engineers, and scientists as they work on the space agency's Artemis program . Named after the Greek goddess of the moon and twin sister to Apollo, the name of the first NASA mission to the moon over 50 years ago, the Artemis program aims to send astronauts back on the moon by 2024 with the ultimate goal of establishing a permanent lunar base and then aiming for trips to Mars.

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Publisher: Space.com
Date: 2020-12-11T16:22:28 00:00
Author: https www facebook com spacecom
Twitter: @SPACEdotcom
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Not to change the topic here:

Beneath a Full Moon, a Healing Ritual - The New York Times

Can you describe what is going on in the work? The weaving is a scene of an imagined ritual between three people in a barren landscape, under a full moon.

Date: 2020-12-12T00:05:56.911Z
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China releases image of its flag on the moon as spacecraft carrying lunar rocks

Right before the ascent vehicle lifted off, the lander unfurled what the space administration called the first free-standing Chinese flag on the moon. The agency posted an image — apparently taken from the lander — of the ascend vehicle firing its engines as it took off.

The spacecraft "unfolded the five-star red national flag, a genuine one made from fabrics, marking a first in the country's aerospace history,"  state media said .

Twitter: @CBSNews
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New Moon & Total Solar Eclipse Means Meaning & Effects
Author: Elizabeth Gulino
Twitter: @refinery29
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Other things to check out:

This is what NASA wants to do when it gets to the moon | MIT Technology Review

When NASA finally gets back to the moon—probably not till sometime after 2024—it will start the groundwork for the first extraterrestrial colony in the history of human civilization, and for future missions to Mars. But America's return for the first time since the Apollo program will also inaugurate a new era of deep-space science. A NASA report released on December 7 outlines what questions NASA still has about the moon, and how getting astronauts on the surface might help answer them.

Publisher: MIT Technology Review
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What Can We Learn From Going Back To The Moon : Short Wave : NPR

It's been more than 40 years since rocks from the moon have come back to Earth. But in late November, a Chinese craft landed on the moon's surface--it's the country's first mission designed to retrieve samples of the moon's surface. The mission is called Chang'e-5, in honor of the moon goddess.

This episode was edited by Gisele Grayson, fact-checked by Ariela Zebede, and produced by Thomas Lu. The audio engineer for this episode was Josh Newell.

Publisher: NPR.org
Date: 2020-12-11
Twitter: @NPR
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Kid Cudi Comes Into Focus on 'Man On The Moon III: The Chosen': Review - Variety

Despite his role as one of the most zealously forensic birthers of emo-rap and its tales of troubled mental health, there has always some disconnect between what Kid Cudi was saying and how he was saying it… or trying to say it all at once. That murky, melancholic jumble finally comes into greater bittersweet focus on “Man On The Moon III: The Chosen.”

As far back as his debut mixtape, 2008’s “A Kid Named Cudi,” through fiery, feeling-filled records such as “Passion, Pain & Demon Slayin’” and even his Kids See Ghosts project with Kanye West two years ago, Cudi’s outlook was that of a solitary man, cursed by awareness’ intensity. Yet his rattled-mind narratives and multi-voice conversations could be as unfocused as his blurred-line musicality.

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Publisher: Variety
Date: 2020-12-11 17:38:21
Author: A D Amorosi
Twitter: @variety
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Can Israelis Put Two Landers on the Moon at Once? - The New York Times

An Israeli nonprofit will try again to land a robotic spacecraft on the moon after its first attempt ended in a crash last year .

The spacecraft, named Beresheet, made it to lunar orbit in April 2019, but plummeted to the surface during its final descent.

On Wednesday, SpaceIL, the nonprofit , announced Beresheet 2, a follow-up that is to be more complex — two landers as well as an orbiter — although the organization says it will fit into roughly the same budget as the first mission: about $100 million. Beresheet 2 is to launch in the first half of 2024.

Date: 2020-12-10T00:06:49.000Z
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Happening on Twitter

Friday, December 11, 2020

Chinese probe orbiting moon with Earth-bound samples - ABC News

BEIJING -- A Chinese probe was orbiting the moon on Monday in preparation for the returning of samples of the lunar surface to Earth for the first time in almost 45 years.

The ascent module of the Chang'e 5 spacecraft transferred a container with 2 kilograms (4.4 pounds) of samples after docking with the robot spacecraft on Sunday and was then cut free.

The orbiter and reentry vehicle will circle the moon for another week awaiting a narrow time window to make the roughly three-day, 383,000-kilometer (238,000-mile) journey back to Earth. It will first "bounce" off the Earth's atmosphere to slow its speed before the reentry vehicle separates and floats down on parachutes to land on the vast steppes of Inner Mongolia, where China's Shenzhou crewed spaceships have also made their landings.

Publisher: ABC News
Date: 2020-12-07T16:30:17Z
Author: ABC News
Twitter: @ABC
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This may worth something:

Not an asteroid after all: Object orbiting Earth is 54-year-old rocket, NASA’s JPL confirms

A mysterious object temporarily orbiting Earth is a 54-year-old rocket, not an asteroid after all, astronomers confirmed Wednesday.

Observations by a telescope in Hawaii clinched its identity, according to NASA’s Jet Propulsion Laboratory in Pasadena, California.

The object was classified as an asteroid after its discovery in September. But NASA's top asteroid expert, Paul Chodas, quickly suspected it was the Centaur upper rocket stage from Surveyor 2, a failed 1966 moon-landing mission. Size estimates had put it in the range of the old Centaur, which was about 32 feet long and 10 feet in diameter.

Publisher: KTLA
Date: 2020-12-02T22:41:32 00:00
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News | Follow Sentinel-6 Michael Freilich in Real Time As It Orbits Earth

When Sentinel-6 Michael Freilich was encapsulated in the payload fairing of a SpaceX Falcon 9 rocket, it was the last time human eyes would have a close-up look at the satellite. But now that the spacecraft is in orbit after launching from Vandenberg Air Force Base in central California on Nov. 21, NASA's Eyes on the Earth is keeping track.

The app provides a 3D visualization of the sea-level-monitoring satellite, letting you see where it is right now as it glides over the cloud-covered globe.

Publisher: NASA/JPL
Date: 2020-11-25 12:11:00
Twitter: @NASAJPL
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Chang'e-5: China's unmanned moon probe delivers samples to orbiting spacecraft | Science | The

A Chinese probe carrying samples from the lunar surface has successfully docked with a spacecraft orbiting the moon, in another space first for the nation, state media reported.

The manoeuvre on Sunday was part of the ambitious Chang'e-5 mission – named after a mythical Chinese Moon goddess – to bring back the first lunar samples in four decades.

* * *

The capsule transferred the moon samples to the orbiter, which will separate and return to Earth, Xinhua said.

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Publisher: the Guardian
Date: 2020-12-06T06:30:57.000Z
Author: Agence France Presse
Twitter: @guardian
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While you're here, how about this:

Australian scientists have released the first 'weather report' for planets orbiting Proxima

Astronomers recently detected two rocky planets orbiting Proxima Centauri, a red-dwarf star and the closest star to our sun.

One of those planets was considered to be within the potentially habitable 'Goldilocks zone', where any water could be in liquid form.

But new research suggests the planet may be exposed to extreme weather events, including stellar flares and plasma ejections.

* * *

'This habitable zone is very close to the star; much closer in than Mercury is to our sun,' University of Sydney researcher Andrew Zic said.

Publisher: Mail Online
Date: 2020-12-10T05:45:14 0000
Author: Australian Associated
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Bloomberg - Are you a robot?
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Exoplanet around distant star resembles our reputed 'Planet Nine' | Berkeley News

Artist's impression of the exoplanet HD 106906 b located a great distance away from the central binary star and the disk of dusty material that surrounds it (Image courtesy of ESA/Hubble, M. Kornmesser).

Astronomers are still searching for a hypothetical "Planet Nine" in the distant reaches of our solar system, but an exoplanet 336 light years from Earth is looking more and more like the Planet Nine of its star system .

Planet Nine, potentially 10 times the size of Earth and orbiting far beyond Neptune in a highly eccentric orbit about the sun, was proposed in 2012 to explain perturbations in the orbits of dwarf planets just beyond Neptune's orbit, so-called detached Kuiper Belt objects. It has yet to be found, if it exists.

Publisher: Berkeley News
Date: 2020-12-10T16:00:19 00:00
Twitter: @ucberkeley
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Astronomers Just Found Cosmic 'Superhighways' For Fast Travel Through The Solar System

Invisible structures generated by gravitational interactions in the Solar System have created a "space superhighway" network, astronomers have discovered.

These channels enable the fast travel of objects through space, and could be harnessed for our own space exploration purposes, as well as the study of comets and asteroids.

By applying analyses to both observational and simulation data, a team of researchers led by Nataša Todorović of Belgrade Astronomical Observatory in Serbia observed that these superhighways consist of a series of connected arches inside these invisible structures, called space manifolds - and each planet generates its own manifolds, together creating what the researchers have called "a true celestial autobahn".

Publisher: ScienceAlert
Author: Michelle Starr
Twitter: @ScienceAlert
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Happening on Twitter

New superhighway system discovered in the Solar System -- ScienceDaily

Researchers have discovered a new superhighway network to travel through the Solar System much faster than was previously possible. Such routes can drive comets and asteroids near Jupiter to Neptune's distance in under a decade and to 100 astronomical units in less than a century. They could be used to send spacecraft to the far reaches of our planetary system relatively fast, and to monitor and understand near-Earth objects that might collide with our planet.

In their paper, published in the Nov. 25 issue of Science Advances , the researchers observed the dynamical structure of these routes, forming a connected series of arches inside what's known as space manifolds that extend from the asteroid belt to Uranus and beyond. This newly discovered "celestial autobahn" or "celestial highway" acts over several decades, as opposed to the hundreds of thousands or millions of years that usually characterize Solar System dynamics.

Publisher: ScienceDaily
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And here's another article:

The center of the Solar System is not where you think — study

For millennia, humans have believed the Earth or the Sun occupied the center of the Solar System, but the truth is the planets and the Sun actually orbit a common center of mass — but no one knows exactly where it is, either.

We are getting closer, though. This year a team of astronomers narrowed in on the center of the entire Solar System within 100 meters — the most precise calculation yet.

INVERSE IS COUNTING DOWN THE 20 MOST UNIVERSE-ALTERING MOMENTS OF 2020. THIS IS NUMBER 18. SEE THE FULL LIST HERE .

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Publisher: Inverse
Twitter: @inversedotcom
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Accessing the arches of chaos in the solar system for fast transport

Todorović et al. considered the short-term (100-year) evolution of massless test particles (TPs) located on orbitals between the main asteroid belt and Uranus. They presented the data in dynamic maps based on two widely used orbit integration packages ORBIT9 and REBOUND while developing a force model containing seven major planets from Venus to Neptune as perturbers alongside the Sun/Jupiter/test particle three-body system.

The team computed the FLI (fast Lyapunov indicator) across 100 years for a large grid, where lighter regions represented orbits located on stable manifolds and darker regions represented those away from them. The researchers noted an emergence of a large "V-shaped" chaotic structure connected to a series of arches at increasing heliocentric distances and nearly following the Perihelion line of Jupiter.

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Solving a Paradox to Uncover Key Clues About Our Solar System's History

Illustration of solar wind flowing over asteroids in the early solar system. The magnetic field of the solar wind (white line/arrows) magnetizes the asteroid (red arrow). Researchers at the University of Rochester used magnetism to determine, for the first time, when carbonaceous chondrite asteroids first arrived in the inner solar system. Credit: University of Rochester illustration / Michael Osadciw

New clues lead to a better understanding of the evolution of the solar system and the origin of Earth as a habitable planet.

Publisher: SciTechDaily
Author: Mike O
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While you're here, how about this:

Exoplanet around distant star resembles reputed 'Planet Nine' in our solar system: Astronomers

Astronomers are still searching for a hypothetical "Planet Nine" in the distant reaches of our solar system, but an exoplanet 336 light years from Earth is looking more and more like the Planet Nine of its star system .

Planet Nine, potentially 10 times the size of Earth and orbiting far beyond Neptune in a highly eccentric orbit about the sun, was proposed in 2012 to explain perturbations in the orbits of dwarf planets just beyond Neptune's orbit, so-called detached Kuiper Belt objects. It has yet to be found, if it exists.

Publisher: ScienceDaily
Reference: (Read more) Visit Source



New gravitational 'superhighway' system is discovered in the Solar System | Daily Mail Online

A new 'superhighway' network running through the Solar System has been discovered by astronomers, and it could speed up space travel in the future.

Researchers from the University of California San Diego looked at the orbits of millions of bodies in our Solar System and computed how they fit together and interact.

The highways allow objects to move through space much faster than previously thought possible – for example, travelling between Jupiter and Neptune in under a decade.

Publisher: Mail Online
Date: 2020-12-10T18:12:42 0000
Author: Ryan Morrison
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Researchers uncover key clues about the solar system's history: New clues lead to a better

"There is special interest in defining this history -- in reference to the huge number of exoplanet discoveries -- to deduce whether events might have been similar or different in exo-solar systems," says John Tarduno, the William R. Kenan, Jr., Professor in the Department of Earth and Environmental Sciences and dean of research for Arts, Sciences & Engineering at Rochester. "This is another component of the search for other habitable planets."

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Some meteorites are pieces of debris from outer space objects such as asteroids. After breaking apart from their "parent bodies," these pieces are able to survive passing through the atmosphere and eventually hit the surface of a planet or moon.

Publisher: ScienceDaily
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Hayabusa2's asteroid dirt may hold clues to the early solar system | Science News

For the first time, scientists are about to get their (carefully gloved) hands on asteroid dirt so old it may contain clues to how our solar system formed and how water got to Earth.

A capsule containing two smidgens of dirt from asteroid Ryugu arrived in Japan on December 7, where researchers will finally get a chance to measure how much was collected. The goal of Japan's Hayabusa2 mission was to collect at least 100 milligrams of both surface and subsurface material, and send it back to Earth.

Publisher: Science News
Date: December 7 2020
Twitter: @sciencenews
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