Webb spots a bizarre exoplanet with a carbon-rich atmosphere orbiting a pulsar, defying theories of how planets form.

Earth’s climate is not only shaped by smokestacks, forests, and oceans. It is also quietly tuned by the slow choreography of ...

Scientists using NASA's James Webb Space Telescope have observed a rare type of exoplanet, or planet outside our solar system ...

A new paper has taken a look at the orbits of megaconstellations around Earth, and found that we may be tiptoeing dangerously ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

Abstract: This research investigates the initial orbit determination for missions in periodic orbits within the Earth–Moon system, observed optically from the ground. The proposed methodology requires ...

Discovered over the summer, the comet known as 3I/Atlas will pass within 167 million miles of our planet on Friday. That's as ...

The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

Astronomers using NASA’s James Webb Space Telescope have found the strongest evidence yet that a rocky planet outside our ...

An ultra-hot rocky exoplanet may be wrapped in a dense atmosphere, defying expectations about what small planets can sustain.

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.

Hot Jupiters were once cosmic oddities, but unraveling how they moved so close to their stars has remained a stubborn mystery ...