Astronomers discover faint dwarf galaxy that seems to exist without dark matter
A faint dwarf galaxy drifting 45 million light-years from Earth may have joined one of astronomy’s strangest clubs.…
New analysis finds signs of life on Mars actually came from Earth
A pair of stubborn molecules, prized because they can survive deep time, just passed an important Mars test…
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…
JWST finds salt clouds in the atmosphere of a strange Pink Planet
GJ 504 b has been one of astronomy’s stranger nearby worlds for years, a faint pink companion circling…
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…
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.…
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…
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…
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…
Former NASA engineer creates electrostatic space drive — no propellant needed
For as long as rockets have existed, motion in space has come with a brutal tradeoff. To move…
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…
New analysis reveals why Ganymede has a magnetic field when other moons do not
Ganymede has long looked like a contradiction in orbit. Jupiter’s largest moon is the only moon known to…