Here's everything you need to know about why Saturn's rings are about to disappear — and when they will return.

New Hubble Space Telescope imagery of the Saturn show it's 'ring spokes' in orbit around the gas giant planet. Credit: ...

NASA’s Dragonfly rotorcraft lander is designed for flight on Saturn's moon Titan. See a "half-scale Dragonfly lander model" ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." Spirals are a repeating theme in ...

After Friday's spectacle, a "planet parade" of this size won't appear in the night sky for several years, experts say.

As Trump returns to the White House, however, most of those accomplishments are at risk. The budget overruns that hobble NASA ...

Mercury, Venus, Mars, Jupiter, Saturn, Neptune and Uranus could be visible, but not all can be seen by the naked eye.

Mercury has a rocky surface when, facing the sun, can reach highs of 800 degrees while overnight lows could reach minus 290 ...

After dusk on Friday night, seven planets are expected to align in the night sky. But you'll need binoculars or a telescope ...

Searching for life on other celestial bodies, or at the very least the necessary components to support it, has been ...