News

Mars and Mercury will appear close to one another in the southwestern sky on Nov. 12.

"Every single subframe I take (prior to stacking) now contains at least one, and usually more than one satellite streak."

A European Mars orbiter spotted barcode-like dust streaks on the slopes of Apollinaris Mons, revealing how tiny avalanches help drive the Red Planet's massive dust cycle.

The X5.1-class eruption from sunspot AR4274 is this year's most powerful solar flare and Earth is in the firing line.

"I felt like it was time to give the Gemini program its due. It was an opportunity not to be missed."

This image captures Comet Lemmon in dramatic fashion, its bright coma and faint tail arcing across the starfield.

Quantum gravity seeks to unify the theory of general relativity with quantum physics to describe how gravity works at very small scales. But there's a big puzzle surrounding the idea.

China's decision to delay the return of its Shenzhou 20 astronauts due to a possible space debris impact has led to discussion of space rescue planning — or lack of it.

Auroras may be visible from Alaska to Indiana as two incoming coronal mass ejections could spark geomagnetic storm conditions overnight.

SpaceX launched 29 of its Starlink satellites from Cape Canaveral Space Force Station on Monday night (Nov. 10). It was the record-breaking 94th launch of the year from Florida's Space Coast.