October means baseball playoffs, Halloween and, for NASA's Lunar Reconnaissance Orbiter, 100 lunar days on the moon.
Astronomers have pinpointed five pairs of merging black holes using three different space and ground-based instruments and two sky surveys.
In October 1957, amateur radio operators monitored the first signal from a spacefaring civilization — and it was us.
A set of stunning images available for download shows what it's like to ride up close and personal to a comet.
A new quantum state has been demonstrated in a pressure exposed to crushingly high pressures, which could pave the way for new forms of electronics.
Let former NASA astronaut Mike Massimino be your guide on a tour of the solar system, on the Science Channel's new show "The Planets."
Astrophotographer Kevin Morefield shared some tips for photographing eclipses and mistakes that have cost him photographs of the rare event.
A giant star near the center of our galaxy hints, once again, that Albert Einstein was correct about gravity.
Automakers aren't the only ones who make concept cars. NASA does too, but this one is for off-roading on Mars.
With the 2017 total solar eclipse just three weeks away, Space.com is turning to the experts to learn about eclipse history and what to expect on the big day.
Astronomer, artist and educator Tyler Nordgren has designed a stunning series of posters for the total solar eclipse of Aug. 21.
For some skywatchers, the upcoming total solar eclipse is an opportunity to duplicate one of the most famous experiments of the 20th century.
Asteroids that follow Mars in its orbit could be ancient pieces of the planet itself, a new study shows.
'Super-Earth' alien planets, not gas giants, may be carving out most of the gaps in the disks of dust and gas surrounding young stars, a new study suggests.
A new Neptune study shows that you don't need to be a professional to do science; amateurs make contributions, too.
Country music legends Garth Brooks and Trisha Yearwood visited NASA's mission control and sang to the astronauts on the space station.
Astronaut Jack Fischer caught some amazing pictures of SpaceX's Dragon cargo capsule leaving the International Space Station today (July 3).
The Curiosity Mars Rover is now smart enough to pick its own targets of exploration, thanks to a new piece of software.
Astronomers have mapped the tangled web woven by the magnetic field of a gas cloud as it births a star. Our own solar system might have looked the same in its earliest days, the researchers said.