It's a first-of-its-kind mission that must work or a $500 million NASA space telescope is going to crash into Earth. The post ...

NASA’s Swift space telescope is running out of altitude, but a privately funded spacecraft is being readied to push it higher ...

NASA unveiled close-up pictures on Wednesday of the interstellar comet that’s making a quick one-and-done tour of the solar ...

Scientists flew the XL-Calibur telescope on a high-altitude balloon to measure polarized X-rays from Cygnus X-1. These ...

As this month's string of powerful X-class solar flares sparked brilliant auroras that lit up skies across an unusually wide ...

The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun ...

The mission will use a larger variant of the rocket known as Pegasus XL, and is on target to launch in June 2026. Katalyst ...

A two-decade-old NASA telescope is on an unstable orbit, and there is a 90 percent chance that it might come burning down in ...

While actual satellite collisions are still rare, near misses are becoming more frequent due to the rapid increase in ...

In 2026, a first-of-its-kind spacecraft—launched on a rocket dropped out of a plane—will attempt to save NASA’s Swift ...