An artist's conception showing a planetary smash-up between a Moon-sized object and a Mercury-sized object. (NASA/JPL-Caltech ...

The physics of neutron stars are almost too fantastic to believe: something the weight of two suns compacted to a sphere the ...

We don't know whether theorized primordial black holes (PBH) are real. If they are, they formed in the very early universe, ...

Hints of high-pressure chemistry within a rare meteorite suggest this fallen space rock comes from a planet gone wrong in the ...

Already own a 3D printer? Discover how a 3D pen serves as a vital post-processing tool for makers, or as a low-cost entry ...

Astronomers don’t treat every “close approach” headline the same way the public does. On June 9, two near-Earth objects, 2026 ...

What if our biggest idea about reality is built on a hidden misunderstanding? A new philosophical look at space-time ...

Much of modern astronomy revolves around the study of strange alien worlds—from the sun’s retinue of satellites to the thousands of known exoplanets orbiting other stars. The discovery has major ...

Using the James Webb Space Telescope, astronomers have "weighed" a dormant supermassive black hole located a staggering 10 ...

Every day, software at NASA’s Jet Propulsion Laboratory scans the orbits of thousands of known near-Earth objects and flags ...

A distant quasar has revealed one of the most extreme ultraviolet outflows ever observed, providing new clues about the ...

When Japan's Hayabusa2 spacecraft was assigned its next destination, scientists expected a routine encounter with a small ...