Vivid auroras lit up skies across North America and Europe as a severe G4 geomagnetic storm, one of the strongest this solar cycle, rattled Earth's magnetic field.
In 2023, gravitational wave detectors picked up the signature of a collision 7 billion light years away. Two black holes had merged in an explosion of warped space-time, but when astronomers analysed the data, they found something that violated the rules of physics. The black holes were spinning faster than any previously observed and fell within a mass range where black holes simply aren't supposed to exist.
