The likelihood of 2024 YR4 colliding with the our planet in 2032 have ticked up to over 3 percent. Is it time to start ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

We typically think of the Oort cloud as scattered ice balls floating far from the sun, yet still tied to it gravitationally.

In January 2025, Venus, Mars, Jupiter, Saturn, Uranus and Neptune were all visible in the night sky. And in February, 2025, ...

The close encounter was "a historic first of its type for a Japanese private, commercial lunar lander," according to ispace.

Seattle satirist Maria Semple’s breakthrough novel is a flurry of contemporary, epistolary wit. Passive aggressive e-mail ...

NASA’s Jet Propulsion Laboratory described the complicated maneuver that will get the Trailblazer in a position to reach ...