Astronomers Suggest Big “Liquid Mirror” Telescope on the Moon


A staff of astronomers from The College of Texas at Austin are bringing a very moonshot idea again from the grave: a liquid-mirror telescope 100 meters in diameter, constructed on the floor of the Moon.

Scientists first proposed the idea, dubbed the “In the end Giant Telescope,” over a decade in the past in a 2007 paper revealed within the journal Nature. As an alternative of a stable mirror, a metallic and reflective liquid layer — mercury has been used for this sort of utility previously — would float on high of a large tank of one other, swirling liquid.

The thought is to see again into the early moments following the creation of the observable universe, removed from the distracting hustle and bustle of Earth.

“On this case we now have proven how the Moon is good [for] utilizing liquid mirror expertise to construct a telescope a lot bigger than we will affordably construct in house,” Pete Worden, director of NASA Ames Analysis Heart on the time, and a co-author of the paper, stated in a 2007 statement.

“Such telescopes, maybe 100 meters in diameter can see again to the early phases of the universe after the Large Bang,” Worden added.

NASA deserted the thought shortly after it was proposed. However now, a staff of astronomers led by NASA Hubble Fellow Anna Schauer have determined to revive the idea, as detailed in a new paper showing in an upcoming situation of The Astrophysical Journal.

“All through the historical past of astronomy, telescopes have develop into extra highly effective, permitting us to probe sources from successively earlier cosmic instances — ever nearer to the Large Bang,” College of Texas at Austin astronomer and co-author Volker Bromm stated in a statement. “The upcoming James Webb House Telescope [JWST] will attain the time when galaxies first fashioned.”

“However concept predicts that there was a good earlier time, when galaxies didn’t but exist, however the place particular person stars first fashioned — the elusive Inhabitants III stars,” Bromm defined. “This second of ‘very first gentle’ is past the capabilities even of the highly effective JWST, and as an alternative wants an ‘final’ telescope.”

The large proposed telescope would function autonomously from the floor of the Moon, gathering energy from solar energy stations close by. The info it receives would then make it again to Earth by way of a satellite tv for pc in lunar orbit.

Slightly than developing the huge 100-meter dish out of coated glass, the staff suggests to make use of liquid as an alternative. Not solely wouldn’t it make it simpler to assemble on the Moon, it might be considerably cheaper as properly.

The telescope could be constructed inside a crater close to both of the Moon’s poles, permitting it to gaze on the identical factors within the sky constantly.

READ MORE: A ‘liquid-mirror telescope’ on the moon could detect universe’s first stars [CNET]

Extra on telescopes on the Moon: NASA Funds Giant Radio Telescope Concept on Far Side of Moon


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