Sunday, March 1, 2020

Is there anybody out there?

That search is accelerating. As Dr Siemion told this year's meeting of the American Association for the Advancement of Science ( AAAS ), in Seattle, better telescopes, faster computers, the discovery of thousands of planets circling stars other than the sun, and an influx of money and scientific talent are transforming the field. What was once a fringe activity has now become mainstream.

They will brighten further with the launch, in 2021, of the James Webb Space Telescope and the opening of new observatories on the ground, such as the Extremely Large Telescope ( ELT ) in Chile. These will be able to repeat, for some nearby exoplanets, the first of Sagan's experiments with Galileo —the search for biosignatures. But, even if they find them, exciting as that would be, it would say nothing about the crucial final letter in SETI , the "I" for intelligence.

Publisher: The Economist
Twitter: @TheEconomist
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Other things to check out:

Possible new 'minimoon' discovered orbiting Earth | Space

Tumbling through Earth's increasingly crowded orbit are about 5,000 satellites, half a million pieces of human-made debris and only one confirmed natural object: the moon . Now, astronomers working out of the University of Arizona's Steward Observatory think they may have discovered a second natural satellite — or at least a temporary one.

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BIG NEWS (thread 1/3). Earth has a new temporarily captured object/Possible mini-moon called 2020 CD3. On the night of Feb. 15, my Catalina Sky Survey teammate Teddy Pruyne and I found a 20th magnitude object. Here are the discovery images. pic.twitter.com/zLkXyGAkZl February 26, 2020

Publisher: Space.com
Date: 2020-02-27T15:03:49 00:00
Author: https www facebook com spacecom
Twitter: @SPACEdotcom
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Search for ET Gets Boost From a Very Special Telescope | Chicago News | WTTW

The VLA consists of 27 radio dishes that are used by astronomers to study many different astronomical phenomena. And though it was prominently featured in "Contact," the 1997 film based on the book by Carl Sagan and featuring Jodie Foster as an astronomer searching for signs of extraterrestrial intelligence, the VLA has not previously conducted this type of search.

SETI plans to develop and install an interface on the VLA by 2021 that will give researchers unprecedented access to data produced by the observatory.

Publisher: WTTW News
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Earth Was Created Much Faster Than Previously Thought, Study Shows

New research suggests Earth was created in a fraction of the time scientists previously thought it formed, suggesting that rapidly forming planets could exist elsewhere.

Conventional thinking suggested the early Earth was formed through the random collision of large planetary bodies through time. As these planetary bodies slammed into one another, they combined to eventually form Earth over a time period of tens of millions of years.

The research team analyzed the iron composition of Earth's interior and compared it to extraterrestrial bodies. What they found was that the composition of Earth was very similar to the composition of a specific type of meteorite, CI chondrites.

Publisher: Forbes
Date: 2020-02-29
Author: Trevor Nace
Twitter: @forbes
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Check out this next:

Space Alien Research Could Get Its First Grad Program - Scientific American

One day in spring 2018 astrophysics professor Jason Wright gave his students a tall order: make a substantial, novel contribution to the search for extraterrestrial intelligence (SETI)—in a semester. That kind of research is usually reserved for Ph.D. dissertations, the culmination of years of toil and turmoil.

At the helm of this still unbuilt ship is Wright, an affable, articulate guy who—until fairly recently—mostly studied exoplanets and not signs of their potential exobeings. His journey into SETI research was a coincidence, a collision between past and present that—like any collision—sent him spinning off in a new direction.

Publisher: Scientific American
Author: Sarah Scoles
Twitter: @sciam
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Area 51 Reality Check: Take The Extraterrestrial Highway To An Alien Nothingburger

Residents of southern Nevada must be chuckling at all the hoopla. After all, even a hundred visitors would be a tourism boomlet.

With 54 residents, no post office and one motel, the small town of Rachel, Nevada, would be the most likely gathering spot for would-be Area 51 raiders. The mining industry pulled out in 1988, and aside from the occasional alfalfa farm and cattle ranch, there's mainly a whole lot of nothing for as far as the eye can see.

Publisher: Forbes
Date: 2019-07-17
Author: Suzanne Rowan Kelleher
Twitter: @forbes
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Astronomer Speculates That Earth's 'Pet' Asteroid Might Be Home To Extra-Terrestrial Probes

Are there relic alien spacecraft on asteroids close to Earth that may have been observing the planet for longer than humans have existed?

Before we dismiss it as crazy talk, consider that Benford thinks that by ruling-out the presence of alien probes and extraterrestrial archeology on rocks that are often close to Earth would bring us to a profound conclusion: there is no-one out there and we're truly alone.

In this context, a co-orbital is an asteroid that goes around the Sun on the same, or similar, orbital path to Earth. Co-orbital objects approach Earth very closely every year at distance is much shorter than anything except the moon.

Publisher: Forbes
Date: 2019-09-21
Author: Jamie Carter
Twitter: @forbes
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A sign that aliens could stink | MIT News

Phosphine is among the stinkiest, most toxic gases on Earth, found in some of the foulest of places, including penguin dung heaps, the depths of swamps and bogs, and even in the bowels of some badgers and fish. This putrid "swamp gas" is also highly flammable and reactive with particles in our atmosphere.

The paper's co-authors include Sukrit Ranjan, Janusz Petkowski, Zhuchang Zhan, William Bains, and Sara Seager, the Class of 1941 Professor of Earth, Atmospheric, and Planetary Sciences at MIT, as well as Renyu Hu at Caltech.

Publisher: MIT News
Author: Jennifer Chu MIT News Office
Twitter: @mit
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