Can GALEX look at the Earth?
No. The instruments on GALEX are designed to look at very faint objects in the sky. Because the detectors on GALEX are so sensitive, the telescope on GALEX must always be pointed away from the Earth and the Sun. In fact, the detectors are so sensitive that GALEX cannot look at any of the stars that we can see with the naked eye from the ground! This still leaves a lot of sky to survey and GALEX will need 29 months to complete its mission of surveying the Universe.
