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

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.

At the height of the Cold War, the Soviet Union announced it had launched Sputnik 1, the world’s first artificial satellite.

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 ...

Seven planets are aligning in the night sky this week, creating a brief chance to see a "planetary parade." Worldwide, the best day to see the alignment is today, Feb. 28. Mercury, Venus, Mars, ...

Global report provides an alternative to climate breakdown, political extremism and economic tensions ...

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 ...