Orbiting in reverse around Neptune, Triton is a cosmic rebel with a secret past. This video dives into the evidence that suggests this giant moon was not born around the blue planet but was violently ...

How many exoplanets orbit two stars? This is what a recent study published in The Astrophysical Journal Letters hopes to ...

Imagine predicting an entire planet's existence with nothing but math, and then finding it right where the numbers ...

The visitor is currently racing away from the sun at a staggering 137,000 mph (221,000 km/h). Its itinerary for the coming ...

Today is Friday, Dec. 19, the 353rd day of 2025 with 12 to go. The moon is new. Morning stars are Jupiter, Mercury, Neptune, ...

In astronomy, there is a concept called "degeneracy." It has nothing to do with delinquent people, but instead is used to ...

Astronomers using W. M. Keck Observatory and Subaru Telescope on the Big Island’s Mauna Kea discovered a massive planet and a ...

On Dec. 20, 2015, a landslide at an industrial park in Shenzhen, China, toppled dozens of buildings and killed 73 people.

The world's most expensive infrared spectrometer - the James Webb Space Telescope - is unearthing extraordinary exoplanet ...

Astronomers using W. M. Keck Observatory and Subaru Telescope on the Big Island’s Maunakea discovered a massive planet and a brown dwarf orbiting distant stars — two rare companions that deepen our ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

Astronomers on Mauna Kea found the first space object on which NASA’s Roman Space Telescope can test its imaging technology.