Thousands more satellites will soon orbit Earth. We need better rules to prevent space crashes.

An international team of astronomers has discovered a unique 6-star system where eclipses of all 6 stars can be seen from Earth.

A new study of data from NASA's bountiful Cassini mission shows that Titan's largest methane sea, Kraken Mare, is at least 1,000 feet - 300 meters - deep near its center. That's plenty of room for a future robotic submarine to explore.

Why is there is a universe at all? The question is a challenging one because it seems perfectly possible that there might have been nothing whatsoever – no Earth, no stars, no galaxies, no universe.

Astronomers announced this month that a new deep-field survey called JADES will be carried out with the James Webb Space Telescope, Hubble's much-anticipated successor. The Webb is due to launch later this year.

Most of the planets in our solar system have some sort of atmosphere and many have dynamic weather systems. But only one moon in the solar system, Saturn's large moon Titan, can say the same.

On Monday, February 1, 2 NASA astronauts will perform the 2nd in a pair of International Space Station spacewalks to finish installing a European science platform and complete long-term battery upgrade work. How to watch live.

In November, a new mini-moon began orbiting Earth. NASA later confirmed it's a lost-and-found 60s-era rocket from the Surveyor 2 moon mission, launched more than 50 years ago. Now the object - SO 2020 - is coming close again for one last time. Here's how to see it!

Astronomers have discovered a possible newly-born planet forming within its own "whirlpool" of dust and pebbles, in orbit around a young star 330 light-years from Earth.

Earth has had at least 5 major ice ages. Now it appears Mars - the next planet outward from the sun - has undergone anywhere from half a dozen to 20 ice ages in the past several hundred million years.