Mercury takes only 88 Earth days to orbit the sun.

Scheduled to launch on Feb. 27, NASA's PUNCH mission could revolutionize space weather forecasts, unify the solar corona and ...

The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking ...

The Blue Ghost lunar lander, built by the Texas-based company Firefly Aerospace for NASA, launched to space on Jan. 15, and ...

An asteroid could potentially crash into Earth in less than eight years. Here's everything to know about asteroid 2024 YR4.

The $10 billion orbiting observatory will give astronomers a better sense of the near-Earth asteroid 2024 YR4's size and ...

How fast is Earth moving? The sun doesn't sit idly in the center of these ellipses at equal distance from their farthest points. It actually follows its own tiny elliptical orbit around what is ...

For a brief, but exciting, time last year, Earth had two moons. A small asteroid lingered close to our planet in its orbit ...

The risk of impact is likely to drop to zero as observations of Asteroid 2024 YR4 continue.

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away. The ...

After its close approach to the Earth, 2024 PT5 is slowly receding away in its new, more distant orbit. But surprisingly, the object’s orbit around the sun is similar to Earth’s, suggesting ...