Astronomers Think They’ve Found the Best Evidence for Dark Matter Yet
Dark matter, the elusive, invisible stuff that astronomers say constitutes roughly 85% of the universe’s mass, doesn’t interact…
Astronomers Detect a Cosmic Source Firing Changing Gamma Rays
Astronomers have long suspected that some of the universe’s most powerful particle accelerators lurk in binary star systems.…
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…
NASA Struggles to Save ‘Multitool’ Orbital Satellite From a Fiery Death
NASA suspended all scientific activity onboard its Neil Gehrels Swift Observatory this past February, in the hopes of…
New Discovery Links Cosmic X-Ray Flashes to Gamma-Ray Bursts
Fast X-ray Transients (FXTs) are some of the most enigmatic high-energy events in astrophysics. They show extraordinary soft…
Scientists discover remnants of Jellyfish Nebula’s ‘sibling’ supernova
Millions of years ago two massive stars circled each other in a cosmic dance. Then one of the…
NASA’s Fermi Mission Uncovers Possible Sibling Supernova Remnants
A new study of two supernova remnants, the debris left behind after stars explode, suggests the explosions came…
NASA Robotic Tech Demo Will Advance Prototype Gamma-Ray Detectors
A new type of gamma-ray sensor developed by NASA, called AstroPix, will take part in a robotic arm…
NASA’s Fermi Glimpses Power Source of Supercharged Supernovae
An international team studying data from NASA’s Fermi Gamma-ray Space Telescope concludes the mission detected a rare, unusually…
A binary star breaks the 100 TeV barrier, rewrites cosmic particle limits
For years, scientists have searched for the sources of the most energetic particles in our galaxy, cosmic rays…
Astronomers Just Found a Monster Cosmic Explosion in the Last Place They Expected
Most gamma-ray bursts—the brightest, most powerful explosions in the universe—are tracked back to the deaths of massive stars.…
NASA Puts 21-Year-Old Spacecraft on Pause to Keep It From Crashing Into Earth
NASA is racing to save an aging space telescope before it burns up in Earth’s atmosphere. To do…