The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

After a "fast and fiery re-entry through Earth's atmosphere", they are due to splash down off the ... Nine months without gravity will have caused "significant, and irreparable, bone density loss", ...

At least two mass extinction events in Earth's history were likely caused by the 'devastating' effects of nearby supernova explosions, a new study suggests. Researchers say these super-powerful blasts ...

Currently more than 8,000 satellites are orbiting at altitudes of between 300 and 1000 km in the Earth’s upper atmosphere – also called the thermosphere. While changes in space weather, such as ...

DARPA is using Earth’s atmosphere as a powerful sensor, allowing the detection of events like rocket reentries and illicit ...

Scientists have discovered a 'super-Earth' exoplanet ... Future missions will focus on studying its atmosphere for signs of life.

A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in our galaxy.

The findings, based on long-term atmospheric data, offer a fresh perspective on the behaviors of Mars' middle atmosphere, highlighting fundamental differences from Earth's. The study applied ...

An artist's impression of a super ... that to Earth, where the mass-fraction of water is just 0.02%. Yet if TOI-152b had been reduced by stellar radiation, there would be no water or atmosphere ...