Aaronm Geller News Today

But astronomers puzzled by the lack of signatures of expected heavy elements.

Dark matter played a role in early galaxy formation and it may have been affected by supersonic interactions witih regular matter.

Researchers discovered these galaxies, which are in their awkward 'teenage' era, are filled with a 'flabbergasting' amount of nickel.

A mysterious galaxy in the early Universe shows that spiral arms and bars existed two billion years after the Big Bang.

New research could help explain why Webb's images of the universe's early galaxies were so baffling to scientists.

There's something strange about the beginning of the Universe.

About 1.1 billion light years away, two neutron stars merged. The collision stripped material off the neutron stars, resulting in a kilonova explosion and a gamma-ray burst. But when the GRB was identified on Earth in 2021, a team led by Northwestern researchers noticed something unusual.  The GRB lasted about 50 seconds, a time period...

Zoom in / Artist's impression of GRB 211211A. Kilonova explosion and gamma ray on the right.Aaron M. Geller/Northwestern/Sierra A year ago, astronomers

Long gamma-ray bursts can be generated by neutron star mergers, study finds. For nearly two decades, astrophysicists have believed that long gamma-ray bursts (GRBs) resulted solely from the collapse of massive stars. Now, a new study upends that...