Keith Cooper

It's another step on the road to one day discovering what dark matter could be.

As the sun grew hotter, so did Mars, prompting much of its atmospheric carbon dioxide to rain out and ultimately get locked up in rocks.

"Its occurrence is like finding a tropical seed in Arctic ice – indicating either an unexpected local environment or long-distance transport in the early solar system."

The amount of data generated by the Rubin Observatory is going to blow all previous cosmic datasets out of the water, but handling that much information poses a severe challenge.

Breathing in moon dust can still give you what one astronaut called "lunar hay fever."

The beads are over 3.3 billion years old, and date from the formation of the "Man in the Moon."

Part of the closest star-forming region to us, known as the Chamaeleon Complex, has been illuminated by the light of young stars in this artwork by nature captured by the Dark Energy Camera.

Simultaneously cooling Pluto while energizing atmospheric molecules to allow them to escape into space, Pluto's haze plays a key role in the planet's energy balance.

With 10 times the mass of our planet, and spending only part of its orbit in the habitable zone, Kepler-725c is very different to Earth.

A giant exoplanet is surprisingly chill given how close it is to its red dwarf star — perhaps because the star is so little.

Built on a set in a specialist facility in Germany, a mockup of a lunar landscape is helping imaging experts learn how to take better images and video footage on the moon.

The core of the Red Planet may be filled with sulfur.

A newly found object could be a dwarf planet that contradicts the Planet Nine hypothesis.

The presence of water-ice in the debris disk around a young star could have helped facilitate the growth and development of exoplanets.

Scientists have found a neutrino that could come from a gamma-ray burst, an active black hole or a collision between a cosmic ray and photons in the cosmic microwave background.

The Wolf Amendment, a law that prevents bilateral cooperation in space research between the U.S. and China, is preventing U.S. government-funded analysis of the Chang'e 5 moon samples.

The idea was first hypothesized about 70 years ago.

Every time this doomed star plunges through a supermassive black hole's accretion disk, it loses orbital energy and triggers a burst of X-rays.

The interior of asteroid Vesta has been shown not to be a protoplanet after all, meaning that new explanations for its origin are needed.

Luke found life on Tatooine to be boring, but he should be glad, because as we have seen, binary stars have the potential to play all kinds of havoc on their orbiting circumbinary planets.

An object seen to have moved in the time between when it was imaged by the IRAS and AKARI surveys in 1983 and 2006 respectively could be Planet Nine.

NASA's mission to Jupiter has revealed new findings about the giant planet and its volcanic moon.

Data from Europe's Gaia spacecraft have revealed that a cluster of 1,000 stars is breaking up much faster than is normal, stumping astronomers.

A newly found, huge cloud near our solar system probably won't form stars, but will rather disperse as part of a feedback cycle that regulates star formation.

Our sun is wobbling, and this has a huge impact upon the regularity of many of Earth's meteor showers, according to a new study.