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: ...

The view was acquired on Sept. 14, 2017 at 19:59 UTC (spacecraft event time). The view was taken in visible light using the ...

An image authentically shows Saturn photographed from NASA's Cassini spacecraft during its final mission in 2017. Rating: ...

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.

NASA’s Cassini spacecraft, which orbited Saturn from 2004 to 2017, took many dramatic images of the rings’ shadows on Saturn.

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

NASA designed the massive Saturn V rocket, hired veteran aerospace contractors to build it, and then expertly flew it to glory. But Apollo was a one-off. In the half century since that program ended, ...

Five planets are visible to the naked eye, according to NASA: Mercury, Venus, Mars, Jupiter and Saturn. Mars will appear reddish and high in the sky, near the Gemini constellation, Star Walk said.