New Results Challenge Basic Ideas of Supermassive Black Holes

Galaxies have supermassive black holes at their centers—our Milky Way, for example, has its own 4-million-solar-mass one, Sagittarius A*. Some astronomers have previously thought that there’s a simple relationship between the galaxy’s size, the black hole’s mass, and how much light the black hole spits out while it…

Synchronized Galactic Orbit Challenges Our Best Theory of How the Universe Works

Scientists thought the Milky Way and Andromeda galaxies were unique: They’ve got rings of smaller dwarf galaxies orbiting in what seems to be a synchronized fashion. But when a team of scientists recently looked at another galaxy, they realized it also seemed to shepherd a flock of dwarfs in a strange, synchronized…

Multiverse Thought Experiment Suggests Life Could Still Exist Under Different Laws of Physics

Perhaps we’re not alone but instead reside in a multiverse stocked with all sorts of fantastical realms. These other universes are somewhat—but not exactly—like our own. Maybe gravity acts differently, or particles come in different shapes and sizes. Could life still exist in any of these bubbles?