New analyses of Saturn's rings reveal how and when they were made, from what, and whether they'll last.

For the first time, heavy metal gases like magnesium and iron have been detected floating away from an exoplanet, a planet orbiting a distant sun. Why? Because the planet - which is about as big as Jupiter - is orbiting perilously close to its star.

Arecibo in Puerto Rico was completed in 1963. In recent years, it has weathered multiple hurricanes. The emergency supplemental funds - supported by the U.S. Congress - represent an investment in the future of this large, famous and much-loved radio dish.

Following a series of successful maneuvers, India's Chandrayaan-2 spacecraft has shifted trajectories and is now on its way to the moon.

When Israel's Beresheet lunar spacecraft crashed in April 2019, there were thousands of microscopic, dehydrated tardigrades - water bears - aboard.

Hubble image of an interacting galactic duo known as UGC 2369.

Tomorrow, the spacecraft will shift from its orbit of Earth toward a path to the moon.

At Palomar Observatory near San Diego, a dedicated telescope spends its nights surveying the heavens. A recent analysis of its data revealed 4 stars that change in brightness, over just minutes.

Snowball planets are rocky worlds with frozen oceans. They were thought to be lifeless. But a new study suggests some might have land areas near their equators warm and wet enough to support life.

New Horizons provided close-up images of Pluto in 2015. For many on Earth today, these spacecraft images provide a once-in-a-lifetime glimpse of Pluto. Read about the new Pluto feature names.