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India took another step toward its first-ever human spaceflight last week, successfully testing the parachute system for its Gaganyaan astronaut capsule.

A congressional letter is putting NASA on blast.

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.

On Nov. 11, 1966, the Gemini 12 mission launched.