Antares is a red supergiant that one day will explode into a supernova.
Two cosmonauts stepped outside the International Space Station for a seven-hour spacewalk on Thursday (Aug. 17), in part to deploy three small satellites in tribute to the dawn of the space age 60 years ago.
Starting at 11:30 a.m. EDT (1530 GMT) Aug. 21, the astronomy broadcasting service Slooh will livestream the total solar eclipse crossing the continental United States coast to coast.
On Aug. 21, 2017, a total solar eclipse will darken the skies from Oregon to South Carolina. Here's what you need to know about this rare celestial show.
Space.com's editors present a list of the astrophysics and astronomy books worth a read-through.
Space.com's editors present a reading list for space and sci-fi lovers, as well as children who are interested in astronomy and spaceflight.
For the first time, scientists have seen bands of clouds drifting across the skies of failed stars known as brown dwarfs.
There's a lot we don't know about the sun — including how its outer atmosphere gets so hot.
A new multisensory app and tactile guide help blind and visually impaired communities experience the total solar eclipse on Aug. 21.
One day, our sun will grow so large that it will swallow Earth. To understand that future stage, scientists must look beyond the solar system to study the full evolutionary cycles of stars.
A new exhibit at the Princeton University Art Museum was inspired by an extraordinary artist who harnessed both scientific knowledge and artistic practicality to produce enchanting paintings of solar eclipses.
The wisps of light emanating from the solar disk during this year's total eclipse are plumes of hot, charged gas called plasma from the sun's corona. And plasma physicists are ecstatic at the chance to study this fourth state of matter.
If you’re on an airplane flying across the U.S. during the Aug. 21 eclipse, what might you see from midair?
Russian cosmonauts Fyodor Yurchikhin, who commands the Expeditionn 52 mission, and Sergey Ryazanski, a flight engineer, are taking a six-hour spacewalk today.
Solar astronomer J. McKim Malville has some advice for people planning to see the Great American Solar Eclipse on Aug. 21: Don’t photograph it.
Life has had a long time to potentially get a foothold on the rocky planets circling the tiny, dim star TRAPPIST-1, a new study suggests.
At a recent gala celebrating the 48th anniversary of Apollo 11, billionaire Amazon.com founder Jeff Bezos talked about his successful 2013 effort to pull pieces of Apollo hardware off the Atlantic Ocean floor.
Like millions of Americans, Neil deGrasse Tyson plans to watch the total solar eclipse on Aug. 21. But he's keeping his eclipse-viewing location a secret.
As the SpaceX Dragon cargo ship approached the International Space Station Wednesday (Aug. 16), the Canadarm2 robotic arm reached out to grapple the spacecraft.
When the Perseid meteor shower peaked over the weekend, no one was expecting an amazing show. After all, the August moon had just passed its full phase and threatened to outshine all but the brightest Perseid fireballs.