New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

Astronomers have discovered the first evidence that tiny red dwarf stars can devour their own planets.

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

A triple star system in which the stars all eclipse one another from our vantage point is standing out as one of the best ...

Astronomers have found some of the strongest evidence yet that stars can swallow their own planets. A new study, published in ...

Somewhere between 50 and 200 million years ago, in three stellar nurseries not far from our corner of the Milky Way, at least ...

Two pairs of ‘rogue’ Jupiter-size, planet-like objects have been found in a large star-forming region in the Milky Way, a new ...

Today: Two of the best, and certainly the most available, tools for viewing the night sky are your eyes. Your eyes let you see the entire sky in just a few seconds. Your eyes can read star charts, ...

Why is May’s full moon so special? What to know the blue moon, according to an astronomer, and why it’s considered a micromoon.

A blue micromoon will make a rare appearance this weekend, offering skywatchers a sight they won't have a chance to witness ...

A celestial rarity known as a blue micromoon will grace the night sky this weekend. It arises from the coinciding of two lunar effects. When there are two full moons in a single c ...