Friday, April 10, 2020

Driving on Other Planets Video | What It's Like to Drive in Space

Using the beloved soft-body physics simulator BeamNG.drive, Orgill drives a pickup truck and a small container truck around in different levels of gravity. Even shifting from one gravity to another causes visible changes in the car, because vehicles are supported by springs and mechanisms that are balanced and flexible rather than rigid.

Orgill changes to moon gravity and tries to get enough traction to go over some small hills. His truck flies into the air and flips before landing basically upright. “Not that bad!” he says. “The windows aren’t even broken!” But when he turns on Jupiter gravity and then sun gravity, the truck almost melts into the ground from the force.

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Publisher: Popular Mechanics
Date: 2020-04-09 06:30:00
Twitter: @PopMech
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In case you are keeping track:

Red giant stars that eat planets might shine less brightly | Science News

When giant stars eat giant planets, their starlight may shine a bit less brightly. That dimming could affect how astronomers measure distances across the universe — and possibly even put past measurements in doubt.

"You would think the planet would be a small perturbation to the star," says astrophysicist Licia Verde. "It turns out that it's not." Those perturbations may even help explain why estimates for how fast the universe is expanding disagree, Verde and her colleagues argue in a paper posted March 25 at arXiv.org.

Publisher: Science News
Date: April 7 2020
Twitter: @sciencenews
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See the waning crescent Moon meet the dawn planets, 15–16 April 2020 – Astronomy Now

At civil dawn (approximately 40 minutes before sunrise in the British Isles) on the mornings of 15 and 16 April 2020, let the old crescent Moon be your guide to three naked-eye planets – Jupiter, Saturn and Mars. Both the red and the ringed planet lie in the constellation of Capricornus, while Jupiter lies in Sagittarius. This looping animation depicts the view very low to the horizon between southeast and south-southeast around 5:30am BST on the mornings in question.

What to look for on 15 April 2020 at 5:30am BST
At the onset of civil twilight some 40 minutes before sunrise in the UK, the waning last quarter lunar crescent lies in Sagittarius just 8 degrees – slightly less than the span of a fist at arm's length – above the south-southeast horizon for an observer in the heart of the British Isles. AN graphic by Ade Ashford.

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How Did the TRAPPIST-1 Planets Get Their Water? - Universe Today

At the same time, the fact that these planets orbit tightly around a red dwarf star has given rise to doubts that these three planets could maintain an atmosphere or liquid water for very long. According to new research by an international team of astronomers, it all comes down to the composition of the debris disk that the planets formed from and whether or not comets were around to distribute water afterward.

The team responsible for this research was led by Sebastian Marino of the Max Planck Institute for Astronomy (MPIA) and included members from the University of Cambridge, the University of Warwick, the University of Birmingham, the Harvard-Smithsonian Center for Astrophysics (CfA), and the MPIA. The study that describes their findings recently appeared in the Monthly Notices of the Royal Astronomical Society .

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Publisher: Universe Today
Date: 2020-04-09T15:36:57-04:00
Author: https www facebook com Storiesbywilliams 205745679447998 ref hl
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Many things are taking place:

You can build your own Earth 2.0 with the awesome website 'Earth-like' | Space

You can now build your very own Earth 2.0! A new website allows users to create an Earth-like planet with a wide selection of options in an effort to demonstrate how many of the new exoplanets lauded as "Earth-like" may not resemble our planet at all . The researchers behind this website hope to clear up some of the confusion about what the phrase "Earth-like" really means.

Ishimaru lead the development of the website "Earth-like" and the Twitterbot of the same name while she was an undergraduate student at the University of Tokyo. Within the website, users can manipulate factors including the land-fraction and volcanism of the planet and where it lies within the habitable zone, the distance from a star where liquid water can remain on the surface. These small shifts can dramatically affect the environments on the surface of a planet.

Publisher: Space.com
Date: 2020-04-03T12:05:15 00:00
Author: https www facebook com spacecom
Twitter: @SPACEdotcom
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Russian space agency says Trump paving way to seize other planets - Reuters

The executive order, which Roscosmos said damaged the scope for international cooperation in space, was signed on Monday.

It said the United States would seek to negotiate “joint statements and bilateral and multilateral arrangements with foreign states regarding safe and sustainable operations for the public and private recovery and use of space resources”.

It said U.S. citizens should have the right to engage in such activity and that “outer space is a legally and physically unique domain of human activity, and the United States does not view it as a global commons”.

Publisher: U.S.
Date: 2020-04-07T12:56:30 0000
Author: Reuters Editorial
Twitter: @Reuters
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Your Guide to Mercury | The Planetary Society
Twitter: @exploreplanets
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News | In a First, NASA Measures Wind Speed on a Brown Dwarf

For the first time, scientists have directly measured wind speed on a brown dwarf, an object larger than Jupiter (the largest planet in our solar system) but not quite massive enough to become a star. To achieve the finding, they used a new method that could also be applied to learn about the atmospheres of gas-dominated planets outside our solar system.

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Described in a paper in the journal Science, the work combines observations by a group of radio telescopes with data from NASA's recently retired infrared observatory, the Spitzer Space Telescope , managed by the agency's Jet Propulsion Laboratory in Southern California.

Publisher: NASA/JPL
Date: 2020-04-09 12:04:00
Twitter: @NASAJPL
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