Six planets grace the sky this month in what's called a planetary parade — Venus, Mars, Jupiter and Saturn are visible to the ...

For example, Jupiter is the most massive planet in our solar system. It’s so big, it could swallow 1,000 Earths. So it ...

NASA's Juno spacecraft has again captured stunning images of Jupiter and its moon Io, providing more insights into the solar ...

Research and development is underway to create robots that can hunt for signs of life in the vast oceans that exist under the ...

Galileo Galilei's telescopic discovery of Jupiter's four moons in 1610 revolutionized astronomy and supported heliocentric ...

Some space conspiracy theories just won't go away.

The asteroid is estimated to be between 656 and 1,443 feet across, and will pass at 16 times the distance to the moon.

Giant planets orbiting close to their stars were thought to boot other planets out of their star system on the way in, but ...

NASA's mission to send a spacecraft to scour Jupiter's moon Europa for signs of life appears back on track after Hurricane ...

Collapsed dead stars, known as neutron stars, are a trillion times denser than lead, and their surface features are largely ...

But later – hundreds of millions of years in the future – a permanent, virtually ringless Saturn will become real, thanks to ...