The most violently explosive events in the universe -- such as a star going supernova, two neutron stars smashing into each ...

The strange behavior of hypervelocity stars suggests a nearby dwarf galaxy must contain a supermassive black hole. If so, a ...

Hypervelocity stars (HVSs) were first theorized to exist in the late 1980s. In 2005, the first discoveries were confirmed.

Hubble captured Westerlund 1, a massive young star cluster with 50,000+ stars. This study reveals stellar motion, structure, ...

By revealing a massive radio jet in the early universe, J1601+3102 offers a rare snapshot of early quasar activity.

In the search for elusive particles called neutrinos, researchers are stringing thousands of detectors in the depths of the ...

A huge detector in the Mediterranean Sea spotted the most energetic neutrino from space to date. The particle could shed light on the universe’s most extreme phenomena.

A neutrino with more energy than we've ever seen before was picked up by a detector on the floor of the Mediterranean Sea, ...

The core of a massive cluster of galaxies appears to be pumping out far more stars than it should. Now researchers at MIT and ...

The core of a massive cluster of galaxies appears to be pumping out far more stars than it should. Now researchers at MIT and ...

Undersea detectors anchored deep in the Mediterranean Sea found an ultra-high-energy neutrino, a particle that opens a new window onto the cosmos.

Astronomers using a giant network of sensors, still under construction at the bottom of the Mediterranean Sea, have found the highest-energy cosmic “ghost particle” ever detected. The neutrino, as the ...