A strong solar storm recently sparked a whole-planet aurora on Mars more than 25 times brighter than any seen before on the Red Planet, researchers say.
The European Southern Observatory's Very Large Telescope (VLT) has captured a stunning image of spiral galaxy Messier 77.
In a new video from NASA, those of us who have never been to space get a glimpse of what an aurora looks like from the International Space Station — and it is stunning.
A new video from the European Space Agency provides step-by-step instructions for how to modify an inexpensive webcam so that it sees infrared light.
Spaceborne instruments provide evidence the climate is changing, from vanishing sea ice and rising seas to changes in soil moisture and more.
A new ESOcast video explores the different tools astronomers have used throughout history to captured starlight.
A new video from NASA's Jet Propulsion Laboratory explains the art of visualizing astronomical data and concepts, like what the TRAPPIST-1 planets may look like.
A new video shows the explosive reaction when a dense stellar corpse sucks up material from a pulsating dead star.
Thanks to rising temperatures, glaciers in Greenland are melting faster than scientists previously thought — and a new NASA video shows how researchers are tracking the feet per day of changes.
A new NASA video explores the science of space gardening and what researchers are learning about plants in space.
Never look directly at the sun, even during a total solar eclipse, like the one that will occur on Aug. 21. Instead, use these tips for how to safely observe the cosmic event.
Humanity has sent some fun and interesting things into space, like dolls, Legos and a soccer ball. But until now, that list hasn't included any commercially available crustaceans.
A decades-old galactic mystery has just been solved — new research has revealed why a distant galaxy has brightened and dimmed like a flickering candle flame over the last 30 years.
Scientists recently characterized 19 "heartbeat" star systems: pairs of binary stars that vary in brightness over time, creating a brightness curve that blips up and down like an electrocardiogram.
The cast and crew of "The Expanse" gave Space.com some insight into what to expect in Season 2 at New York Comic Con on Oct. 8. Here's what you'll see when the show picks back up in early 2017.
Put on your thinking caps! NASA has announced Phase 2 of its 3D-printed habitat challenge, focused on creating a living space for astronauts on the Red Planet.
George Takei has boldly gone where no "Star Trek" star has gone before: floating through the air on a zero-gravity flight.
New secrets have been revealed about the monster black hole at the center of Cygnus A, an elliptical galaxy that played a prominent role in Carl Sagan's 1985 science-fiction novel "Contact."
An international team of researchers has identified the 20 most Earth-like worlds among the more than 4,000 exoplanet candidates detected to date by NASA’s Kepler space telescope.