During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed.

Researchers say they may have achieved Einstein's vision of a "unified field theory" that can unite two of nature's ...

"Now, for the first time, we are seeing directly that strong magnetic fields may play an important role in suppressing star formation, even at small scales." Detailed study of stars in this ...

Many astronomers believe a strong magnetic field is a requirement for life. But events like the Laschamps excursion show that life on Earth endured even when the field was weak. Studying these ...