Earth’s magnetic field nearly collapsed about 565 million years ago, but the planet’s core froze solid and saved it in the nick of time, a new study suggests.
It's winter in the United States, and swaths of the country are experiencing bitter cold brought on by a phenomenon nicknamed the polar vortex, a pattern weather satellites are watching closely.
A meteorologist explains the science behind the historic weather event hitting the Midwest and Plains right now.
A laser pulse glanced off a rubidium atom and entered the quantum world — taking on the weird physics of Schrödinger's cat.
It's hard to grasp the sheer amount of astronomical data that came online this week in a 1.6 petabyte data-dump from a Hawaiian telescope, but picture 30,000 Wikipedias or 15 Libraries of Congress.
New Horizons' historic flyby of the KBO 2014 MU69, or Ultima Thule, is revealing incredible insights about the birth of the solar system.
The far outer solar system is teeming with mountain-size space rocks left over from the long-ago planet-formation period, a new study suggests.
We all edit our selfies to capture our best sides, and the Curiosity rover on Mars is no different, as shown in a new "selfie" NASA released to mark the rover's last days at Vera Rubin Ridge.
One of the Hubble Space Telescope's most famous images peered even deeper into the cosmos than scientists had thought.
NASA's OSIRIS-REx mission is orbiting an asteroid closer than any spacecraft has ever orbited a body — and it shows in an incredible pair of photographs that the team released yesterday (Jan. 24).
Time to change your desktop pictures. The Hubble Space Telescope just produced an amazing panorama image of the Triangulum Galaxy, one of the closest galactic neighbors to Earth.
The dense atmosphere roiling on Saturn's largest moon, Titan, may come from organic material baking in the moon's interior.
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in December 2018.
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in November 2018.