WASHINGTON, April 11 (Reuters) - Frigid and far-flung Neptune, our solar system's outermost planet, is adding to its reputation as an enigmatic world, with astronomers puzzled by a surprising drop in ...

Looking for a sky event this week? Check out our full Sky This Week column. December 31: A Europa transit to welcome the new ...

WASHINGTON (Reuters) - Frigid and far-flung Neptune, our solar system's outermost planet, is adding to its reputation as an enigmatic world, with astronomers puzzled by a surprising drop in its ...

Neptune, the eighth planet from the Sun – The Distant Planet. This bright blue orb hanging out near the edge of the solar system has garnered intrigue from sky watchers and scientists alike. Like its ...

Take the chance in September to get outside and gaze at planets. Neptune is in full opposition this month, and while Saturn's full opposition happened earlier this month, it's still visible if you ...

Astronomers have unexpectedly discovered the heaviest Neptune-like planet yet — one more than four times the mass of our solar system's Neptune — yet it remains a mystery how the world might have ...

New models suggest Uranus and Neptune may hold far more rock than expected, raising questions about how these distant planets formed.

You don’t really hear about Neptune, do you? Not as often as the other planets, certainly. Space robots regularly provide snapshots of the surface of Mars and the clouds of Jupiter. Mercury is a ...

Welcome to the enchanting realm of Neptune. In its orbit, artists express their most profound ideas, musicians strum their guitars, and spiritualists connect with the ethers, where the boundaries ...

Artist’s concept of a Neptune-sized planet, left, around a blue, A-type star. UC Berkeley astronomers have discovered a hard-to-find gas giant around one of these bright, but short-lived, stars, right ...