Earth

On Sunday, Sept. 29, Earth captured a new "mini-moon" called 2024 PT5. The bus-size asteroid is expected to orbit our planet for 57 days, but is too small to be visible to amateur skywatchers.

Hurricane Helene slammed into Florida's Gulf Coast overnight Thursday (Sept. 26) with satellites capturing striking views of a colossal storm.

Tropical Storm Helene reached hurricane status on Wednesday (Sept. 25), and scientists warn that its damage could be life-threatening.

Earth may have had a Saturn-like ring system long ago, created from the debris of a passing asteroid that our planet tore apart.

Temperature fluctuations above Antarctica in winter show the earliest warming of the stratosphere on record.

Cosmic dust may have helped to kick-start life on Earth, new research suggests. The findings challenge a widely held assumption that this was not a plausible explanation.

A long-sought invisible electrical field wrapped around Earth has been detected more than half a century after it was first predicted to exist.

Structures that scatter seismic waves deep in Earth's mantle seem to be everywhere researchers look.

An Egyptian dig uncovered a massive building that shows considerable evidence of astronomy observations, including a sundial and features meant to track the sun and stars.

The recently launched satellite has been watching the spread of aerosols from wildfire smoke, creating a catalog that scientists say would eventually benefit weather forecasting.