Space

It has helped us learn about the age of the universe and that supermassive black holes actually exist. The Hubble Space Telescope is a veritable manufacturing plant of discoveries.

Sunday and Monday, the Geminid meteor shower rounds out 2015's offering of celestial wonders.

Danielle Futselaar // SETI International

Theories that a flickering star was really a structure harnessing energy have been debunked.

Five ways to keep tabs on our spacefaring friends!

The celestial show occurs every November.

They formed just 300 million years after the Big Bang.

Geological evidence suggests Earth's water is as old as the planet itself.

Image Credit: JPL via Wikimedia Commons // Public Domain

Happy birthday, Carl!

Details—and the big-picture takeaway—from the latest research on Mars's atmosphere.

Studying Mars' atmosphere can help us to understand how the red planet's water disappeared.

The station has been inhabited continuously for the past 15 years.

ESA/Rosetta/NAVCAM via Flickr // CC BY-SA IGO 3.0

This is the first time oxygen has been discovered in a cometary coma.

Carbons that pre-date rock records were found in ancient minerals in Australia.

The white dwarf star is believed to be destroying its own solar system.

Humans have been making observations of the heavens for millennia, and in that time people have said a lot of different things about the planets—some interestingly astute and others wildly inaccurate.

X-ray image of the remnants of SN 1006. Image Credit: Wikimedia Commons // Public Domain

Astronomers around the world marveled at the brilliance of the “guest star.”

Earth's cultural ambassador: Jackie Gleason.

When a weed tries to take root in zero gravity, interesting things start to happen.

It's thanks to a treaty we signed in 1967.

After a moment of disbelief ("I said, 'The Ridley Scott?!’"), James Green, director of NASA’s Planetary Sciences Division, didn’t hesitate. “I said, ‘Yes! I’ll clear my calendar!’”