NASA is gearing up for an unprecedented space mission set to launch in 2026, aimed at rescuing the Neil Gehrels Swift Observatory.

In space, nobody can hear you argue about the best movie set there.

Our model of the cosmos is still in very hot water.

…Except for Mab, which is even weirder than expected.

A foot fossil found in Ethiopia belonged to an ancient human. The finding could knock one of the most famous names in human evolution from her spot on the family tree.

Unexplained signals from Antarctica’s ice are baffling scientists. These mysterious pulses challenge everything we know.

It seems miraculous that a comet would hover, stationary, over a small town. Not if you look at Chinese astronomers’ records, says one scientist

These researchers have only filmed the species four times in 40 years.

The eastern side of the Gakkel Ridge has never been reached with a dive vehicle because of floating sea ice.

This rare phenomenon is also called the green rim and it actually happens at every sunset.

How many human cells does a pig need before it’s considered too human?

Trees may look still and silent, but they’re engaged in a constant, complex dialogue—through air, soil, and even electricity.

"A vulnerability in this software poses a threat to billions of dollars in space infrastructure and the scientific missions they enable."

The powerful X1.1 solar flare from sunspot region 4298 sparked strong radio blackouts on the sunlit portion of Earth at the time of eruption.

Junk is accumulating in space at a fantastic pace, with millions of pieces orbiting the Earth, and humans need to figure out a way to deal with it.

The explosive growth in satellite numbers in low Earth orbit is proving problematic for space telescopes.

Even without today’s advanced modeling tools, scientists made a ‘remarkably’ accurate estimate.

Clues about how galaxies like our Milky Way form and evolve and why their stars show surprising chemical patterns have been revealed by a new study.

NASA's Jonny Kim and two cosmonauts are scheduled to leave the ISS today (Dec. 8) at 8:41 p.m. ET.

For 19-year-old Gael Gomez, the Mount Pleasant Sidewalk Astronomers has changed his life for the better. But soon, he may be forced to leave D.C. and return to Venezuela.

In a recent study at UMass Amherst, biologists looked at specific catch-and-release practices for striped bass, catching 521 striped bass and studying their physiological stress once back in the water

Author of Unmasking the Face, psychologist Paul Ekman identified six basic emotions that he believed were present in all human cultures: anger, disgust, happiness, sadness, surprise, and fear.

NASA has announced when the longest total solar eclipse of the century will occur—and you won’t have to wait long. Here’s what you should know.

A fossil discovery in China has left scientists in shock since they had never hoped to find something like this. It belongs to a larva, a fragile creature. Something this delicate is hard to fossilise, but the researchers found one with its organs intact.

Out of the 11 S&P 500 sectors, the tech sector was the only one that closed in the green on Monday.