Solar System

A tiny asteroid measuring some 27 inches (70 cm) wide was detected on a collision course with Earth above Siberia. It is expected to burn up harmlessly on the morning of Dec. 3, 2024.

Energetic particles that arise when cosmic rays hit Earth’s atmosphere could help assess hidden damage to buildings in Ukraine after the war.

Data processing for NASA's Solar Dynamics Observatory and IRIS probe are down for a while, thanks to a burst water pipe in a server room used by the missions.

The European-Japanese BepiColombo probe made a close flyby of Mercury on Dec. 1, 2024 and captured an image of the planet.

New research suggests that Venus may never have possessed liquid water oceans. That would mean "Earth's evil twin" was always hostile to life.

A panel of experts has picked seven finalists for the name of asteroid (164207) 2004 GU9, a "quasi-moon" of Earth. You can vote for your favorite through Jan. 1, 2025.

Active volcanoes were erupting on the far side of the moon 2.8 billion years ago, the first lunar samples returned from the far side reveal. 1

Historical texts that mentioned details about the battle site helped researchers match the images to the lost town of al-Qadisiyyah.

New modeling research reveals that the Atlantic Meridional Overturning Circulation (AMOC) is particularly vulnerable to shifts in the Irminger sea off Greenland from increasing Arctic meltwater.