SUNSET: 
Astronomers Rein in Possibilities for Exotic Particle
Astronomers observing a distant galaxy have dramatically shrunk the range of possible properties of a long-predicted — but never-detected — subatomic particle.
Jocelyn Bell Burnell: Pulsar Pioneer
In 1967, astronomer Jocelyn Bell Burnell (1943–) discovered the first pulsars — cosmic lighthouses that now enable astrophysicists to probe extreme physics and test general relativity.
Happy Birthday, Margaret Burbidge!
The astronomer who taught us we are all made of stardust celebrate her 100th birthday on August 12, 2019.
New Study Pushes Back Milky Way’s Dust-up with Andromeda
By tracing stars in other galaxies, the Gaia satellite has helped astronomers understand the relative motions of the Milky Way's galactic siblings.
IceCube Neutrino Offers New Eyes on the Cosmos
A combination of neutrino detection and observations across the full spectrum of light has pinpointed a cosmic accelerator for the first time, revitalizing multi-messenger astronomy.
Physicist Proposes Alternative to Black Holes
A physicist has incorporated a quantum mechanical idea with general relativity to arrive at a new alternative to black hole singularities.
Simulating the Universe: The Next Generation
A new suite of cosmological simulations sheds light on the interconnected cosmic processes that shape the universe.
