Solar System

Earth's temporary asteroid friend last year was a chunk of its real moon that had been blasted into space thousands of years ago, scientists find.

Using the Atacama Large Millimeter Array, astronomers have discovered icy exocomet belts circling 74 different alien planetary systems.

A quasi-moon of Earth has been given a name. It's Cardea, after the goddess of door hinges.

Japanese scientists have created the first-ever long-term dataset about Earth's entire atmosphere, stretching all the way to space.

Finland just became the Artemis Accords' 53rd member nation, bolstering NASA's efforts to establish peaceful and cooperative international space exploration.

A new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's mantle. These anomalies are surprisingly similar to sunken chunks of Earth's crust but appear in seemingly impossible places.

The Kumani Bank mud volcano in the Caspian Sea created an island in early 2023 that had almost disappeared by the end of 2024, according to Landsate satellite imagery.

2024 was the warmest year on record, according to NASA data. The global average temperature was 2.3 degrees Fahrenheit above the mid-20th-century baseline.