Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

Sometimes, it's easy to forget that we're spoiled with one of the best observatories in our solar system, and it's called ...

On Friday (Jan. 10), the moon will pass near Jupiter, meeting up with the gas giant in the constellation Taurus. Viewers can ...

The larger moons of Pluto and Earth likely formed through a collisional process with Charon and our moon, respectively, ...

So I grabbed my camera, ran outside, and looked up just as Mars was supposed to emerge from the Moon's curved horizon. Seen ...

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

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

Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that ...

these moon rings were stable — particularly Jupiter’s Iapetus. Even Earth's moon had a 95% chance of supporting a stable ring system in the simulations. "[W]e did not anticipate that moons in ...

At 8:07 p.m. Monday, stargazers in Chicago will see Mars disappear behind the moon and reappear on the other side of the moon ...

At this brightness, the moon will outshine the planet and appear larger in the night sky, given it is much closer to Earth than Jupiter, the fifth planet from the sun. Related: Night sky ...