"People will be hurt and killed" if we're not vigilant, scientists warn.

The Japan Aerospace Exploration Agency (JAXA) successfully demonstrated "Planetary Defense (Earth Defense)" technology to ...

The month of July will be filled with celestial wonders, but it's the moon's close encounters with planets that will steal ...

This collection showcases a solar system in motion, from Saturn’s moons playing tricks on perspective and a comet’s dramatic ...

NASA works with scientists worldwide to advance our understanding of what hazards are in our solar system and how we can mitigate the risks.

A team of planetary scientists, ecologists, and marine biologists affiliated with several institutions in the U.S. and one in the U.K., has found evidence suggesting that parts of the world's oceans ...

To understand how long a planetary nebula remains visible, we first need to understand why a planetary nebula is visible at all. When a solar-type star (one with a mass of 0.8 to eight times that of ...

This week, seven planets will align in what is known as a planetary parade. This planetary parade will see Mars, Jupiter, Uranus, Venus, Neptune, Mercury, and Saturn lining up in the evening sky. Four ...