Could we ever have moon telescopes? The moon may offer a better and safer view of space.
Sign up for our email newsletter for the latest science newsRadio telescopes around the globe have provided scientists with data on astronomical phenomena for nearly a century. We have even built telescopes and sent them into orbit, the most recent of which — the James Webb Space Telescope — has provided astronomers with brand new insights into the formation of early galaxies, nebula where stars are born, and the chemical composition of atmospheres of newly discovered worlds.
Telescopes in space can't be as big as those we build on the surface of Earth because they have to fit within a certain payload and could become vulnerable to space debris. Some telescopes that observe in the infrared also need cooling fluid — otherwise, they would give off too much of their own infrared radiation and ruin the images. This fluid can also evaporate or run out. Plus, space-based telescopes are hard to access if they need repairs or modification.
According to Maillard, the lunar poles have permanently shadowed regions inside impact craters that could serve as potential sites for a large telescope — sites that stay cold enough to allow for infrared observations without needing a coolant. "By its full diameter , it will be twice more sensitive in the common spectral domain offering an image resolution twice as good. But it would be a completely new tool since no space telescope for the far infrared has been having a comparable diameter," says Maillard.
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