NASA is monitoring three aircraft-sized asteroids that will zoom past the Earth later today at around 19,000 to 22,200 miles per hour.

It's a new type of three-body problem for astronomers, who used the Hubble Space Telescope to determine that twin asteroids ...

Countless asteroids in our solar system, some close, some far — but did you know that some of these space rocks have names? Several years ago, Unistellar held a contest to name an asteroid its citizen ...

We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks," asteroids from the ... then as many as one million space rocks larger than 328 feet ...

Planet killer asteroids ... because the space rock can only be studied using the amount of sunlight it reflects. The amount of light reflected by the asteroid’s surface is used to estimate ...

Space agencies have systems in place to spot, track, and forecast the future orbits of potentially hazardous asteroids. NASA has a network of telescopes used to track near-Earth asteroids, like ...

Named 2024 YR4, the space rock ... not a solid piece of rock. It was more like, what we call a pile of smaller pieces of rock. And this burst several kilometers above the surface and had this ...

Later the space rock fluctuated ... for known threatening asteroids to being a near-zero threat. At some point in the near future, this risk may be out of date. The rock is 130 – 300 feet ...

Planet killer asteroids ... because the space rock can only be studied using the amount of sunlight it reflects. The amount of light reflected by the asteroid's surface is used to estimate how ...