"SpaceShipTwo, welcome to space," reads a triumphant tweet from Virgin Galactic posted during today's successful test flight after the company's vehicle reached 51.4 miles (82.7 kilometers) in altitude.
For hundreds of years the Small Magellanic Cloud has provided astronomers with a relatively close-up view of another galaxy.
NASA's Mars Reconnaissance Orbiter photographed the InSight lander, as well as the hardware that helped the stationary robot ace its Nov. 26 touchdown on the equatorial plain known as Elysium Planitia.
For those hoping to get a glimpse of tonight's Geminid meteor shower, the weather across the United States will either be very good or very bad.
A comet is set to pass close to Earth this weekend, providing a treat for skywatchers — and for astronomers hoping to learn more about the building blocks of the early solar system.
The Parker Solar Probe is doing well after its first flyby of the sun, and it will soon begin returning groundbreaking data about how our star behaves.
The 2018 Geminid meteor shower peaks overnight tonight (Dec. 13) and Google is celebrating the celestial light show with a Google Doodle that is simply adorable.
Virgin Galactic is conducting the fourth powered test flight of its SpaceShipTwo Unity today and chronicling the attempt - its highest and fastest test flight yet - on Twitter. Check out the awesome updates here. It might even reach space!
For the first time ever, Virgin Galactic has reached space — by one definition, anyway.
Virgin Galactic conducted its fourth powered test flight of the SpaceShipTwo Unity on Dec. 13, 2018, marking the first time the ship reached space, and the photos are incredible. See photos from the test flight here.
Jupiter beams through a bright streamer in the sun's atmosphere in this new image from NASA's Parker Solar Probe.
A black dwarf is all that is left after a white dwarf star burns off all of its heat, but retains its mass.
The Geminid meteor shower peaks the night of Dec. 13-14. This guide tells you the best times and places to see these shooting stars (no equipment necessary).
On Dec. 13, 2012, a Chinese spacecraft flew by the asteroid Toutatis. See how it happened in our On This Day In Space video series!
The Geminid meteor shower will provide a shining backdrop for the approach of Comet 46P/Wirtanen on Thursday (Dec. 13), shortly before the object's closest approach to Earth in 20 years.
Head for dark, clear skies tonight — overnight Dec. 13-14 — to see the shooting stars of the Geminid Meteor Shower overhead.
NASA astronaut Nick Hague is excited to clamber atop a Russian Soyuz rocket 11 weeks from now, even though his first experience with the booster didn't go so well.
Its main job is to spot the stars, but an ultrasensitive navigation camera on NASA's Juno spacecraft is returning amazing images of Jupiter's rings, auroras, lightning, and even its moonlit dark side.
As comets blaze across the night sky, they can bring wonder and excitement to those watching from Earth – or even a sense of impending doom.
NASA's Mars InSight lander has settled into its new home on Elysium Planitia and is preparing to deploy its instruments — and if all goes well, one device's work should be complete by March.