Keith Cooper

The nova eruptions come about when a white dwarf steals too much matter from a close red giant companion.

A space telescope and AI teamed up to analyze a million galaxies and learn what triggers supermassive black holes the most.

The findings provide an answer to a planetary mystery that has bewildered scientists for nearly four decades.

The supernova exploded over 13 billion years ago in a galaxy far, far away.

The discovery potentially transforms what we think about how the cosmic environment influences galaxies as they form.

Measuring the time discrepancy between Earth and Mars will help make future navigation and communication systems on the Red Planet more accurate.

Scientists used data from NASA's Perseverance rover to find tiny lightning bolts on Mars that could scour biosignatures off the world's surface

The Butterfly Nebula is a preview of the fate that will befall the sun in about 5 billion years.

"Asteroseismology with Roman is possible because we don't need to ask the telescope to do anything it wasn't already planning to do."

Skylights, openings in the surface of Mars that descend down into caves, have been found on Mars, along with signatures for the presence of water ice.

Simulating a billion years using previous best-resolution simulations would take almost 36 years of real computing time.

The unique system features two rare Wolf-Rayet stars, and a supergiant companion that is interrupting the flow of the dust shells that the two Wolf-Rayet stars cast off.

The supernova was the death of a red supergiant star 500 times larger than the sun, in a galaxy just 22 million light-years away.

Quantum gravity seeks to unify the theory of general relativity with quantum physics to describe how gravity works at very small scales. But there's a big puzzle surrounding the idea.

Excess heat detected at Saturn moon Enceladus' north pole helps to account for a finely balanced energy budget that keeps the moon's ocean liquefied. What could this mean in the search for life?

The molecules are building blocks of the chemical precursors of things such as RNA.

A historical record of Arctic sea ice based on the abundance of cosmic dust in sediments on the sea bed of the Arctic Ocean has revealed how the sea ice responds to climate warming.

We'll lose the ISS pretty soon. What might we lose with it?

New observations of a volatile young star have shown how infant suns could unleash enough energy to trigger biologically relevant chemical reactions in an orbiting planet's atmosphere.

Researchers claim flashes of light seen in sky surveys could have been UFOs drawn to Earth by nuclear tests, but more mundane explanations should be explored first.

The interstellar comet 3I/ATLAS will make its closest pass to the sun on Oct. 30, and various spacecraft will be watching, seeking clues about the icy wanderer's chemistry and composition.

On Earth, CI chondrites make up only 1% of all meteorites that have been collected, but they may be far more common on the moon.

This new analysis could be used to test the physics of quantum chromodynamics in the future.

The destroyed planet has spewed material onto the white dwarf's surface, with astronomers detecting 13 different elements originating from the rocky body.

The super-Earth exoplanet is "one of the best candidates in the search for an atmospheric signature of life."