An curved arrow pointing right. When magnetic fields collide and realign in space, it causes an invisible explosion called a magnetic reconnection. NASA recently recorded this phenomenon for the ...

the magnetic field weakened to cause aurora to occur over most of the globe, and allowed more harmful UV light to come in from space. Around the same time, Homo sapiens appear to have started ...

Earth’s moving interior generates our planet’s magnetic field, an invisible shield that helps protect us and our atmosphere from harmful energy coming from space. This magnetic field has a ...