YR4 has a 2.3% chance of hitting Earth in the year 2032. But according to new estimates, it may have an even smaller chance ...

As more satellites, telescopes, and other spacecraft are built to be repairable, it will take reliable trajectories for service spacecraft to reach them safely. Researchers are developing a ...

NEW ORLEANS — Solar sails that allow satellites to glide on the light from the sun could soon become a reality. The technology would allow scientists to provide earlier warnings of space weather ...

The small satellite will orbit the moon to ... should a hazardous one ever be on a collision course with Earth. The European Space Agency is providing a follow-up to that test, known as Hera.

Launching satellites into space is expensive, but once a sufficient network is available, companies can offer broadband satellite internet to customers over a wide swath of the planet, even in ...

Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision. But their proximity also offers ample opportunities to learn more about the ...

Scientists reassured that this boulder will not be able to destroy the planet, but it can level a large city. After all, during a possible collision, the asteroid could release about 8 megatons of ...

A vast network of military satellites belonging to the US has long underpinned its dominance in space. But China is challenging the US status as the space superpower, and its satellite system is ...

Elon Musk's internet satellites have been a game changer for people in rural areas, but scientists are alarmed that plans to launch thousands more will be perilous for our skies. Joe Supan is a ...

Satellite images help identify large areas of pollution caused by fires, dust or sand storms, volcanic eruptions, large industrial sources, or the transport of man-made pollution from other regions.