Astronomers using NASA’s James Webb Space Telescope have examined the atmosphere of a rare giant planet with temperatures ...

Some planets orbit so close to their stars that a single “year” lasts less than a day on Earth. A few of those worlds just ...

NASA’s James Webb Space Telescope has uncovered a rare alien world that sits in a cosmic “sweet spot” between scorching hot Jupiters and frozen gas giants like Saturn.

NASA chief Jared Isaacman’s call to restore Pluto’s planetary status has reignited a long-running scientific debate over whether the icy world was unfairly demoted from the solar system’s official ...

The Psyche mission, on its way to study an asteroid of the same name, approached within 2,864 miles of the red planet on May ...

NASA’s Psyche spacecraft skimmed past Mars in a precision flyby that helped catapult it deeper into space toward its ultimate ...

Astronomers using NASA’s James Webb Space Telescope have uncovered a rare world unlike anything in our solar system — a giant planet about the size of Saturn with surprisingly Earth-like temperatures ...

Using a new technique that partly relies on artificial intelligence, researchers spotted potentially more than 10,000 new ...

Add Yahoo as a preferred source to see more of our stories on Google. It's unlikely you'll be able to walk outside and see a line of planets, but according to NASA, a seven-planet parade happening ...

Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for being a planet, putting Pluto into the new category of dwarf planet ...

Three decades ago, in 1995, humankind discovered the first planet beyond the borders of our solar system. It's called 51 Pegasi b, and it spins around its main-sequence star (meaning not unlike our ...