The final photos that NASA's New Horizons spacecraft snapped of Ultima Thule during the probe's epic Jan. 1 flyby reveal the distant object to be much flatter than scientists had thought.
As they prepare for their first lap around the Milky Way, our galaxy's nearest neighbors have shown a dramatic increase in star formation.
An ancient supercontinent turned inside out as the Earth swallowed its own ocean some 700 million years ago, new research suggests.
A super-precise measurement of one of the fundamental constants of the universe suggests it's expanding faster now than it was in its early years.
The monster collision between our Milky Way and fellow spiral galaxy Andromeda will occur about 4.5 billion years from now, rather than in 3.9 billion years.
Astronomers just found an asteroid that zips around the sun every 165 Earth days — the shortest year for any known asteroid.
If you don't like your local weather, perhaps you would prefer the atmosphere on Uranus or Neptune — and the Hubble Space Telescope has an update on each planet's current conditions.
Scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years.
Learn about planet Mars’ atmosphere, water supply and the possibility to support life, plus, findings from the Mars exploration rover mission.
A Japanese asteroid probe will snag samples of its target space rock just two weeks from now, if all goes according to plan.
What does a star feel like? A team of scientists put astronomy on a vibrating sound stage in order to tackle such questions.
The first commercial landers to touch down on the moon should do so by the end of 2021, and they have a long list of scientific questions to tackle when they do.
A Chinese satellite orbiting Earth's moon has been snapping some amazing images from the lunar far side, otherwise known as the "dark side of the moon."
It's official: 2018 was the fourth hottest year on record, scientists at NASA and NOAA confirmed in a report released today (Feb. 6).
Hundreds or millions of years after a meteorite smashes into Earth, researchers are left analyzing the impact site to figure out what happened.
Now that the government shutdown is over, federal agencies have finally released an early edition of the World Magnetic Model, almost a full year before the next one was scheduled to be released.