Welsh island has one of the world's darkest skies Massive asteroid passes between Earth and Moon Webb telescope detects dust storm on distant world The best shot at spotting the planets on Monday ...

They'll look like stars but they're not -- they're planets. What's arresting about this view is they all line up in a straight line, starting down very close to the horizon with Mercury and ...

five-planet alignment with Saturn, Neptune, Jupiter and Uranus. The five-planet line-up is the result of all the planets traveling around the solar system at different speeds, with causes apparent ...

The alleged "Planet Nine," also called "Planet X," is believed to be about 10 times the mass of Earth and 5,000 times the mass of Pluto. Related: 15 stunning ... have been five human-made objects ...

Astronomers are revising their understanding of how stars and planets form after the James ... these six rogue worlds are gas giants roughly five to 10 times more massive than Jupiter.

NASA’s Juno spacecraft orbiting Jupiter has sent back another batch of stunning photos of ... after completing its core five-year survey of the giant planet. The new images from its 36th ...

Jupiter" exoplanet called 2M1207b, precisely 20 years ago this week. This was the first direct visual confirmation of a world ...

Astronomers have found evidence of a process that supports an alternative, more rapid approach to planetary formation, more ...

A celestial event is considered a parade when several planets are involved in the lineup — like June's ... while a large planetary alignment includes five or six.

Webb's observations indicated that these six rogue worlds are gas giants roughly five to 10 times more massive than Jupiter. But Webb's observations suggest that they didn't start out as planets.