From a marathon milestone on Mars to a sky filled with satellite trails above Chile’s deserts, this week’s collection ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years ...

A comet screaming in from another star system carried alien ice ratios never seen before. What scientists found inside its spinning nucleus is reshaping how we picture worlds beyond our sun.

Scientists studying the comet 3I/ATLAS have determined that this interstellar visitor is remarkably ancient — formed an estimated 10 to 12 billion years ago in a primordial planetary system — and has ...

Every time I see the moon in the sky, it makes me happy. Our natural satellite is so familiar it’s easy to take it for ...

Several of Saturn’s moons are on view this morning, including its brightest satellite, Titan, along with Dione, Tethys, Rhea, ...

A rocky world orbiting inside the habitable zone of a nearby red dwarf has drawn interest from astronomers. The exoplanet ...

On July 28-29, it will be the peak time for the Piscis Austrinid meteor shower, with a maximum of five meteors per hour.

Astronomers have identified a potentially habitable exoplanet just 25 light-years away, raising hopes that one of Earth's ...

When the sun swells into a red giant about 5 billion years from now, Earth may escape being swallowed by the dying star, a ...

Ninety percent of the world's population could glimpse asteroid Apophis during its once-in-a-millennium close approach to ...