StarBurst, a wide-field gamma ray observatory, arrived at March 4 for environmental testing and final instrument integration.

Gamma-ray bursts, the most powerful kinds of explosions known in the cosmos, may help provide a piece of the puzzle when it ...

The SMITHSONIAN ASTROPHYSICAL OBSERVATORY is a part of the Smithsonian Institution which, in conjunction with the Harvard ...

From left to right, NASA Marshall engineers Carlos Diaz and John Luke Bili, U.S. Naval Research Laboratory mechanical ...

Mar. 18, 2025 — Physicists have measured a nuclear reaction that can occur in neutron star collisions, providing direct experimental data for a process that had ... Webb Telescope Captures Its ...

For the first time, scientists have directly measured a weak r-process reaction using a radioactive ion beam, shedding light ...

A supernova is a cataclysmic stellar death that leaves behind a black hole or neutron star. It is the biggest ... observed in the universe. Credit: NASA's Goddard Space Flight Center / ESA ...

An international team of astrophysicists from China and Australia has for the first time determined how massive neutron stars are when they are born. "Understanding the birth masses of neutron ...