Researchers question methane atmosphere on TRAPPIST-1e

Previous hints of a methane atmosphere on TRAPPIST-1e might not be accurate, a new paper suggests. But the tantalizing exoplanet could still have an atmosphere.

Astronomers create 1st map of the sun’s outer boundary

Astronomers have produced the 1st map of the sun's outer boundary, the point-of-no-return for material that escapes the sun's magnetic grasp.

Astronomers see monster stars from the cosmic dawn

Researchers have found evidence for monster stars in the early universe. These giants collapsed directly into the earliest supermassive black holes.

This moss survived in space for 9 months

In an experiment on the outside of the International Space Station, a species of moss survived in space for 9 months. And it could have lasted much longer.

Mysterious 3200 Phaethon is the Geminids’ parent object

3200 Phaethon is the weird comet-like asteroid that spawns the Geminid meteor shower. New research reveals more answers ... and questions.

Long-lasting gamma-ray burst is a unique puzzle

We now have more insight on the longest gamma-ray burst yet. The burst lasted at least 7 hours, nearly double that of the previous record.

There might be an ocean on exoplanet TOI-270 d

Is there an ocean on exoplanet TOI-270 d? A new study said this sub-Neptune exoplanet might be a water world with either a global or nightside ocean.

Did a lost moon of Mars create tides in an ancient lake?

Thin, repeating sedimentary layers examined by the Curiosity rover suggest that a big, lost moon of Mars created tides in the ancient lake of Gale crater.

Lightning on Mars? Electric sparks in dust devils confirmed

NASA's Perseverance rover has detected lightning on Mars 55 times. It heard the small electrical discharges with its microphone in dust storms and dust devils.

Where’s the normal matter in our universe?

Planets and stars in the night sky are made of normal matter. Yet only 9% of the universe's normal matter is in objects such as these. Where is the rest of it?