Scientists have puzzled over this question for decades, ever since orbiting spacecraft picked up signs of a high magnetic field in lunar surface rocks. The moon itself has no inherent magnetism today.

Gleaning data from old rocks may result in bias. Now, geophysicists have a way to improve their methods to overcome challenges in studying the history of the Earth's core and magnetic field that make ...

Michigan State University messaged Rinktamaki with an interest in buying some of the rocks to study. Michigan State, along with the University of Saskatewan, researched the Yooperlites for months.

Glowing rocks in Michigan? What to know about 'Yooperlites' Jalen Williams, Detroit Free Press. Wed, May 28, 2025 at 12:46 PM UTC. 4 min read.

Here's what to know. What is now the oldest rock in the US? Michigan's Watersmeet gneiss is now estimated to be the oldest rock in the country at more than 3.6 billion years old, researchers Carol ...

Mysteriously magnetic rocks collected on Apollo mission finally get an explanation. News. By Ben Turner published 18 January 2022 ...

If those rocks show signs of both shock and ancient magnetism, it could confirm that the moon's magnetic anomalies were due to a colossal asteroid impact. "There are large parts of lunar magnetism ...

The instrument could select rocks that contain a magnetic compound – magnetite – that is also produced by bacteria on Earth. The rocks could then be brought back to Earth for closer examination.

Geologists uncovered ancient rocks in Greenland that bear the oldest remnants of Earth’s early magnetic field. The results potentially extend the age of the Earth’s magnetic field by hundreds ...

Yooperlites are rocks that fluoresce in the dark under ultraviolet light. They became known when an Upper Peninsula resident discovered them in 2017, according to the Michigan Department of ...