Watch the epic view of the moon and Earth captured by the Orion spacecraft ahead of its outbound powered flyby. Credit: NASA ...

Astronomers directly imaged a faint companion star orbiting Betelgeuse, solving a decades-old mystery about its strange ...

Betelgeuse, one of the brightest stars in the night sky, may not be alone. And its potential companion may be responsible for ...

The solar system floats inside a vast, million-degree hot bubble—an invisible cocoon of thin gas that glows in X-ray light. Known as the Local Hot Bubble (LHB), this low-density cavity stretches more ...

The James Webb Space Telescope's ability to see in near- and mid-infrared light allowed it to capture this view of Herbig-Haro 49/50. A spiral galaxy appears at its edge in the upper left.

That means returning from the moon, the Artemis astronauts will be traveling at around 0.0037% the speed of light. Assuming a constant top speed for Orion leaving Earth, it would take about 1.14 ...