Look at Earth from orbit today and you see the famous blue marble: oceans, ...

New observations of WD 1856 b, a gas giant closely orbiting a white dwarf, offer a preview of what could happen to Jupiter and Saturn after the sun dies in about five billion years.

For decades, we believed our Solar System ended with Neptune, followed only by icy debris and distant dwarf planets. But ...

They’re less dense than cotton candy, and they will help astrophysicists better understand the most unusual ways giant planets can form.

Add Yahoo as a preferred source to see more of our stories on Google. Stargazers who have heard of an amazing planetary alignment coming later in January may be in for a letdown if they look up at the ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published in the journal Icarus, this extra world might have triggered a violent ...

For two nights, the moon will host a cosmic party with three planets – Mars, Saturn and Uranus – that will be visible in the US and beyond.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Sky-watchers who saw the Venus-Jupiter conjunction on ...

A celestial phenomenon is forming in the Northern Hemisphere on Friday, as seven planets are expected to appear lined up in the night sky. Most are expected to be visible to the naked eye, though not ...

Humanity is dramatically increasing its presence in space, and that's putting strain on the legal framework around it.