For the third day in a row, external cameras on the International Space Station captured dramatic views of the storm whipping across the Atlantic.
The sun just produced its biggest solar flare for 12 years—despite supposedly being in one of its quietest phases.
Scientists still have no reasonable explanation for what is causing huge dips to the star’s brightness.
As a triumphant mission to Saturn ends, its lead imaging scientist recalls her favorite photographs and moments.
Object found hiding in a cloud of molecular gas believed to be an elusive type of black hole.
Physicists discuss the latest discovery of 15 radio bursts coming from a galaxy three billion light years away.
Scientist traces the trajectories of 300,000 stars and found the ones most likely to brush past us in the future.
The compilation includes views from the International Space Station, the Solar Dynamics Observatory and other spacecraft.
You will not get another chance to see Florence in centuries but you have some very good options this weekend.
Florence is three miles wide and will pass at a distance of over 145 million miles.
Breakthrough Listen project observes 15 fast radio bursts coming from dwarf galaxy 3 billion light-years away.
In the 15th century, Korean astronomers saw a star erupt. We now know what they were watching.
New theory about the cause of dips in light from a star emerge as scientists continue to monitor its weird behavior.
The celestial event drew millions of people to YouTube, Facebook and Twitter.
Dry your eyes and grab your binoculars. There’s still plenty to see.
The maps depict Earth’s position relative to the sun, using pulsars that can remain active for billions of years.
For those who can't get to the path of totality, there's still hope.
Map is in line with measurements predicted by the Standard Model—currently our best explanation for the universe.
China is seeking one of the few foreigners qualified to run the Five-hundred-meter Aperture Spherical radio Telescope, but there are some drawbacks.
“When Mother Nature gets to spinning, it can be an awesome but scary sight," NASA astronaut Jack Fischer tweeted.
There’s a good reason authorities are treating the upcoming solar eclipse like a natural disaster.
Molecules that might drive the production of complex organic compounds were discovered on Titan, potentially shedding light on how life on Earth got started.
Supercomputer simulations reveal we are all made up of a bit of extragalactic matter.
Scientists announce most detailed description of a GRB to date, shedding light on black holes.