Not exact matches
This allowed the international team to determine that the explosion was a Type IIb supernova: the explosion of a massive
star that had
previously lost most of its hydrogen envelope, a species of
exploding star first observationally identified by Filippenko in 1987.
The X-ray sky crackles with
previously unimagined action:
exploding stars, gas swirling into monster black holes, and pile - driver smashups of whole clusters of galaxies.
Based on the
previously measured concentrations of galactic cosmic rays, many scientists suspect that the particles get flung toward Earth in the shock waves of
exploding stars.
Previously, astrophysicists disagreed about where the r - process occurs: Two top candidates were
exploding stars called supernovas (SN: 2/18/17, p. 24) and neutron
star mergers.
From now on its occupants will be exotic, short - lived atoms that could
previously only be found in
exploding stars.