The terminator sweeps across the Moon, Comet Tsuchinshan-ATLAS continues to wow, and Jupiter reaches a stationary point in ...

October's new moon will bring us a spectacular 'ring of fire' eclipse The new moon occurs on Wednesday, Oct. 2, at 2:49 p.m.

Time passes at different rates for different observers, depending on their relative speeds and their proximity to (and ...

Watch the moon phases and libration for 2024, as seen from Earth's Northern Hemisphere, in this time-lapsed animation that is ...