Cosmic plasma was supposed to rule out dark photons. Simulations say otherwise
A major limit on dark photon dark matter may be far weaker because early-universe plasma stops absorbing energy…
Astronomers find an ultra-dense mega-Earth 23 times our planet’s mass but only 2.5 times its size
GJ 523b is 2.55 times Earth’s radius but about 23.5 times its mass, making it unusually dense for…
Mars moon Deimos may be hiding ancient craters beneath 120 meters of debris
A single asteroid impact may explain both Deimos’ huge south-polar depression and the thick blanket of debris covering…
A 1-megaton nuclear blast could prevent 97% of a city-killer asteroid from hitting Earth
A 1-megaton nuclear explosion detonated near a 160-meter asteroid produced damage and motion consistent with the object breaking…
2-kiloparsec trail of stars could reveal how dark matter shapes galaxies
A thin ribbon of stars around the ultra-diffuse galaxy UGC 9050-Dw1 may be the first globular-cluster stellar stream…
The Milky Way glows brightly in first-of-its-kind neutrino image
IceCube has produced the first neutrino image of the Milky Way, revealing high-energy particle activity concentrated along our…
Diamond’s extreme melting point could unlock more fusion energy
Diamond melts under extreme pressure in a way that now closely matches quantum-based simulations, resolving a disagreement that…
New Gaia data is challenging a 50-year-old assumption about how stars and galaxies form
Astronomers found that star clusters do not always form the same balance of small and large stars, challenging…
NASA’s Juno spacecraft finds temperatures surging just below Io’s volcanic surface
NASA’s Juno spacecraft measured heat beneath Io’s surface for the first time, finding temperatures rise sharply within just…
JWST captures stunning images of one of the lightest known exoplanets
Astronomers discovered Beta Pictoris d, a gas giant about 2.4 times Jupiter’s mass, after spotting it in VLT…
A beam of light can cross the entire universe in no time at all
A photon can cross a billion light-years while accumulating no elapsed time along its path.Special relativity links space…
Meteorite 200x larger than the dinosaur killer reshaped the course of evolution on Earth
A meteorite 50 to 200 times more massive than the one linked to the dinosaurs struck Earth 3.26…