Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

Did you watch the Lyrid meteor shower? Here is what the 2026 Lyrids were, how meteor showers happen, why shooting stars ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

Webb finds a massive planet, 29 Cygni b, orbiting a nearby star, offering new clues about how even the largest planets grow ...

For observers on Earth, the sun appears as a bright, familiar disk—but what we see is only half the story. Like the moon, one ...

Acting as stellar archaeologists, scientists have found fossilized magnetism on long-dead white dwarf stars, which may help ...

On Earth, people grip objects to ensure they don't fall. In space, this process changes: When astronauts hold an object ...

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If you step outside after sunset, you might catch one of the season’s loveliest celestial meetups as dazzling Venus shimmers ...

An accounting of all the water that should have been and gone on Mars’s surface has come up with a discrepancy that shows just how little we understand the Red Planet’s hydrological history A billion ...