Mercury: The Party Animal of the Solar System

The image doesn’t quite properly explain that the orbits are actually those of MESSENGER, the NASA spacecraft that was trying to orbit Mercury (not the orbit of Mercury itself). Don’t blame the spacecraft though – it’s Mercury’s lopsided mass and thus its unstable gravity field that has it in a wibbly wobbly orbit (probably caused […]

The Merging of Two Supermassive Black Holes [Video]

Supermassive black hole + supermassive black hole = super-SUPERmassive black hole! Supercomputer models of merging black holes reveal properties that are crucial to understanding future detections of gravitational waves. This movie follows two orbiting black holes and their accretion disk during their final three orbits and ultimate merger. Redder colors correspond to higher gas densities. […]