The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

What planetary treat is happening in the night sky over California and the rest of the Northern Hemisphere How to see planets with the naked eye Why Pluto isn't part of the 2025 - or any other - ...

Seven planets aligned in the night sky on Friday, Feb. 28, viewable from Earth. A similar planetary alignment with six planets will occur on Aug. 29. The planets appear to align from Earth's ...

Astronomers have narrowed down the cosmic search for life, identifying fewer than 50 rocky planets among thousands of known exoplanets that may have the right conditions to support life. Using new ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

The Moon 'So much magic': Artemis II shares first images from the far side of the moon, including new 'Earthset' and total eclipse in space Cosmology Largest-ever 3D map of the universe shows 47 ...