Scientists use Einstein’s equations to reveal what came before the Big Bang
Some of the hardest questions in cosmology begin where the usual math gives up. Push Einstein’s theory far…
Darkness can travel faster than the speed of light — without breaking Einstein’s relativity
A dark point inside a beam of light should not be much of a traveler. Yet in a…
Collapsing stars could form gravastars instead of black holes
A black hole is supposed to be the last word in stellar collapse: matter falls inward, spacetime caves…
JWST finds rare planet with different atmospheric conditions at dawn and dusk
WASP-121 b is split between extremes. One side faces its star nonstop and burns at about 2,770 Kelvin.…
A supernova remnant may have been discovered in the Milky Way
ⓘ NASA – Unsplash An image showing the supernova SN 1993J. Thanks to the Chandra X-ray Observatory, astronomers…
Rare meteorite points to a long-lost planet from our early solar system
A meteorite found in the Sahara is forcing scientists to rethink what kinds of worlds once circled the…
Astronomers detect winds from a black hole reaching 30% of the speed of light
ⓘ NASA – Unsplash An illustration showing two black holes. Recently, astronomers have detected powerful winds in a…
Galaxy-killing wind may explain why giant galaxies died so early
A massive galaxy in the early universe seems to be growing itself toward ruin. While it churns out…
New tachyon theory could unlock the secrets of time travel and causality
Faster-than-light particles have spent decades in physics as both temptation and warning. They offered a way to test…
Early galaxy collisions may explain why giant galaxies died young
A new study suggests that some of the Universe’s earliest giant galaxies may have lived dramatic lives. They…
Physicists propose that our universe may contain three dimensions of time
Space and time looked settled, at least in broad outline. Einstein’s special relativity gave physics a durable framework…
Deep-space water reservoir contains trillions of times more water than all Earth’s oceans combined
A cloud of water larger than anything ever seen in space has turned up around one of the…