The case of mistaken identity was quickly resolved, but astronomers say it shows the need for transparency around craft in ...

For a few months, Earth had a second moon — a tiny asteroid that may have been a piece of our own Moon ...

For a brief, but exciting, time last year, Earth had two moons. A small asteroid lingered close to our planet in its orbit ...

An unusual looking 33-foot-long object discovered orbiting Earth last year may have come from a surprising place.

The asteroid is about 33 feet (10 meters) across and poses no danger to Earth. It joins another known lunar asteroid ...

In the United States, funding for planetary defense has long had strong bipartisan support both inside and outside of ...

Scientists think a small rock discovered near Earth last August was hurled into space by an ancient impact on the lunar surface.

G3 has mesmerized astronomers and amateur skygazers for months as the world tried to spot the bright comet in the sky nearing its fatal encounter with the Sun.

Lee esta historia en español aquí. The near-Earth object was likely ejected into space after an impact thousands of years ago ...

The sun’s light exerts a tiny force called “solar radiation pressure” on objects in space. Lightweight human-made debris, ...

The small near-Earth object 2024 PT5 captured the world’s attention last year after a NASA-funded telescope discovered it lingering close to, but never orbiting, our planet for several months.

From Jan. 11 to 15, 2025, a bright comet surged through images from the ESA (European Space Agency) and NASA SOHO (Solar and Heliospheric Observatory) spacecraft. Called C/2024 G3 (ATLAS), the comet ...