Composite of Earth and the Moon from Galileo data. (NASA/JPL/USGS) The constant, omnidirectional hail of cosmic rays that stream through the Solar System from the galaxy beyond may not be as uniform as we thought.

NASA's OSIRIS-APEX mission executed an Earth flyby successfully on Tuesday, September 23, 2025, to position the craft on a course for a future rendezvous with the possibly hazardous asteroid Apophis, according to the space agency. The spacecraft, formerly ...

A new study using data from China's Chang'e-4 moon lander found an area of reduced radiation from cosmic rays near the moon. The findings could be used to improve the safety of lunar explorations.

The object, the latest “quasi-moon” detected by astronomers, could be with us for almost another 60 years. By Robin George Andrews The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t ...

Particles from Earth’s atmosphere have been carried into space by solar wind and have been landing on the moon for billions of years, mixing into the lunar soil, according to a new study. The research sheds new light on a puzzle that has endured for over ...

Stephen DiKerby receives funding from NASA and NSF grants, as well as from Michigan State University. Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com.

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon, came from closer to the sun. Artist’s impression of the collision between the early Earth and Theia, with the sun in the far ...

The last total lunar eclipse visible from the U.S. happened less than a year ago, on March 13, 2025. That night, it was cloudy in Duluth, but satellite photos showed clear skies about 75 miles to the south. So I got in the car and took the freeway south ...