Astronomers had long suspected that certain quasars—those brilliant, otherworldly light sources fueled by supermassive black ...

Think of it this way: only around 10,000 decently sized meteorites slam into Earth per year. Meanwhile, the planet is ...

There are signs deep beneath the Pacific Ocean that an exploding star once sent cosmic rays blasting out towards Earth, and ...

The Orionids are one of two major meteor showers caused by remnants from Halley’s comet, which passes near Earth every 75 ...

A new NASA mission will capture images of Earth's invisible "halo," the faint light given off by our planet's outermost atmospheric layer, the exosphere, as it morphs and changes in response to the ...

Imagine this: a tiny needle hurtling toward Earth at the speed of light. At first glance, it might sound like no big deal. After all, it’s just a needle. But in reality, a projectile moving this fast ...

A new NASA-backed study—relying on data from the Clouds and the Earth’s Radiant Energy System (CERES) satellite—suggests that ...