For most of us who are not astronomers, the image that comes to mind when describing a reflecting telescope is of a huge instrument in its own domed-roof building on a mountain top. But a ...

Meteors from the Ursids appear near the Little Dipper, which is part of the constellation Ursa Minor. Only skywatchers in the ...

"I think every astronomer is going to find something of value here, as NASA's missions enable the world to answer fundamental ...

Early risers across North America and Europe may spot a bright, silent light gliding across the Christmas sky — and it just ...

NASA's Hubble Space Telescope has gotten a rare peek at the aftermath of two cosmic collisions — and helped scientists solve ...

But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...

Autonomous free-flying robots aboard the International Space Station (ISS) frequently lose their bearings. Without gravity to distinguish up from down, even precision sensors suffer from accumulating ...