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A SpaceX Falcon 9 launch on Sept. 23 will send three spacecraft a million miles from Earth to map the heliosphere and expand our understanding of space weather and atmospheric science.

A newly discovered gamma-ray burst is unlike any seen before, repeating over the course of a day rather than erupting in milliseconds, leaving astronomers perplexed by its origins.

A cadre of iron-rich extraterrestrial particles picked up faint whiffs of our planet's atmosphere when they fell to Earth millions of years ago.

Directive 8020 is shaking up the Supermassive Games formula for better and for worse.

In the not-too-distant future, "artificial astronauts" could fly as actual crew members on human missions to Mars, and elsewhere in space.

As part of the Artemis 2 astronaut moon mission launching no earlier than 2026, NASA is asking volunteers to test alternative forms of deep-space tracking.

NASA's hosting a teleconference on Wednesday (Sept. 10) to discuss a new rock analysis from the Perseverance Mars rover. Here's how to tune in.

Back in 2019, a consortium of scientists predicted August 2025 as the peak of the solar activity cycle. But where are we now?

Astronauts aboard the International Space Station captured great shots of the total lunar eclipse over the weekend.

"The country that lands on the moon first will shape the rules of engagement in space for decades to come."