Cosmic rays seen at Earth show a wide range of particle energies, from 107 electron-volts (eV) to more than 1020 eV, the latter being about the same as the kinetic energy of a 450 gram football ...

Earth is quietly collecting radioactive debris from an ancient stellar explosion as our Solar System drifts through a giant cloud of gas and dust between the stars. Scientists analyzing Antarctic ice ...

What if we tell you that researchers have found something interstellar buried in the ice in Antarctica? One possibility is the plot of The Thing; the other is a mystery that has puzzled scientists for ...

Stardust from ancient supernova explosions has been discovered in Antarctic ice, offering clues about the Solar System’s path through space.

Scientists studying ancient Antarctic ice have discovered new evidence that Earth is currently traveling through a cloud of ...

Through the years since it was first launched, the Hubble Space Telescope has captured stunning photographs of the Cassiopeia ...

Supernovas are the most brilliant of explosions. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A supernova is what happens when a star has ...

UC Santa Cruz professor shares one of cosmology's highest honors with Alex Filippenko at UC Berkeley and Ken Nomoto at the ...