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NASA plans to build a giant radio telescope on the 'dark side' of the moon. Here's why.

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NASA scientists are working on plans to build a giant radio telescope in a nearly mile-wide crater on the "dark side" of the moon.

If approved, it could be constructed as early as the 2030s and cost more than $2 billion .

Astronomers want to build the first -of-its-kind dish, known as the Lunar Crater Radio Telescope , to help unravel some of the universe's biggest mysteries.

They are concerned about growing levels of invisible radiation leaking from private satellite "megaconstellations".

Radio signals with wavelengths greater than 33 feet ( 10 m) do not easily pass through Earth 's atmosphere.

These wavelengths are vital in studying the very beginning of the universe, known as the cosmic dark ages.

The LCRT would also be shielded from solar radiation, which can also interfere with some other radio signals.