NASA is paying a team of researchers to develop a plan for a telescope on the far side of the moon. The Lunar Crater Radio Telescope (LCRT), as the concept is called, would be a lot like the Arecibo telescope, which collapsed in December. A huge dish would collects radio waves from the cosmos and amplify them so that scientists could analyze the signals. The difference is that on the moon, such a telescope would be shielded from the cacophony of radio signals that such a device on Earth would hear from all kinds of equipment and satellites.
To build the LCRT, rock-climbing robots would suspend a kilometer-wide dish inside a lunar crater. The telescope would be nearly three times wider than Arecibo, and its lunar perch would give it a much better view of the universe. Arecibo discovered the first known planet beyond our solar system, mapped Venus’ surface, and detected a pair of stars that confirmed Einstein’s theory of general relativity.
‘We really do not know what the universe looks like’ The Arecibo Observatory in Puerto Rico, one of the world’s largest radio telescopes, pictured before its collapse.
“It’s very challenging, but it’s something that I think is achievable with present-day technology,” Saptarshi Bandyopadhyay, a NASA engineer who leads that team, told Insider. NASA announced last week that it will give a team within the agency $500,000 to refine their concept of the telescope’s design and craft a plan for building it.
However, the telescope was at a disadvantage: Earth’s atmosphere garbles radio waves with a wavelength higher than 10 meters, so it blocked Arecibo’s view of the earliest stages of the universe. Building a telescope on the moon, far from atmospheric interference, would allow astronomers to finally see what they’ve been missing. NAIC Arecibo Observatory/NSF
“Above-10-meter wavelengths, we really do not know what the universe looks like,” Bandyopadhyay said. “We don’t know what we’re going to discover in those wavelengths.” “This is at the stage when the first stars were being formed in the universe, or even before that, when the first matter was formed but the stars hadn’t been formed yet,” Bandyopadhyay said.
Studying the early universe could help scientists understand the origins of dark matter, which outweighs visible matter six to one.
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