An asteroid skimming just 200 miles above the planet sounds like science fiction, yet recent flybys have come uncomfortably close to that mark. Several small space rocks have threaded the gap between ...

Comet 3I/ATLAS is not just another icy visitor cutting across the night sky. As it hurtles through the inner solar system, ...

This twist — that 3I/ATLAS' outer layers have been baked by the sun — does not derail our mission. It just makes the science ...

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

With new technology, smarter tools, and a lot of patient digging, historians and archaeologists are uncovering marvels from every corner of the world. One day it’s an enormous thigh bone from a ...

With new technology, smarter tools, and a lot of patient digging, historians and archaeologists are uncovering marvels from every corner of the world. One day it’s an enormous thigh bone from a ...

Jupiter, Mercury, Neptune, Saturn, Uranus, and Venus—will appear in the sky together in a special planet parade on Feb. 28.

This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune are all in the evening sky, but you’ll need binoculars, timing, and a ...

NASA on Friday shared a stunning new view from the International Space Station. The timelapse video (see above) shows a view ...

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...