A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

Add Yahoo as a preferred source to see more of our stories on Google. Telescopes helped researchers track the planet. Britta Pedersen/dpa A free-floating planet drifting through space is being closely ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.

Astronomers have spotted a lonely world roughly the size and mass of Saturn, drifting through the Milky Way without a star to orbit. The discovery turns a once theoretical curiosity into a concrete ...

6 planets will align in a 'planet parade' Saturday, Feb. 28, 2026, shortly after sunset. Here's which planets you might see and how to best view them.

Mercury, Venus, Neptune, Saturn, Uranus and Jupiter will appear together shortly after sunset on Feb. 28 — but is this the "planet parade" we've been waiting for?

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...

From dazzling Jupiter high in the evening sky to elusive Mercury low at sunset, February 2026 offers one of the year's best planetary lineups.