Celebrating Earth Day with an image of Earth captured by NASA's Artemis 2 mission around the moon.

Comet C/2025 R3 (PanSTARRS) is brightening in the night sky in April. Here's when and how to see the buzzworthy celestial ...

From Mars, Earth transits the Sun four times in a 284-year cycle. The transits occur in either May or November at intervals of 100.5, 79, 25.5, and 79 years. During these events, Earth and the Moon ...

For a brief stretch on April 13, 2029, a giant space rock will slip closer to Earth than some of the satellites parked high ...