During the Age of Exploration, explorers relied on compasses to navigate the oceans and conquer the wilds, but they were ...

SGR 0501+4516, one of the roughly 30 known magnetars in the Milky Way, was discovered in 2008 after NASA’s Swift Observatory detected gamma-ray flashes at the galaxy’s edge. Unlike typical magnetars, ...

Every compass needle on the Earth’s surface is moving in response to the 1367-mile-thick ocean of liquid iron and nickel under our feet that generates the planet’s magnetism. This layer is the outer ...