These events are the likely site of rapid neutron captures called the r-process. One of these events known as 2007bi was the first pair-instability type. These events are classified into two types based on the presence of hydrogen Balmer lines in their spectrum. Perlmutter, Schmidt, and Riess discovered the accelerating expansion of the Universe by observing these events. Core collapse can produce one type of these events, and the Crab Nebula is a remnant of one of these events. For 10 points, name these explosions of s
These events are the likely site of rapid neutron captures called the r-process. One of these events known as 2007bi was the first pair-instability type. These events are classified into two types based on the presence of hydrogen Balmer lines in their spectrum. Perlmutter, Schmidt, and Riess discovered the accelerating expansion of the Universe by observing these events. Core collapse can produce one type of these events, and the Crab Nebula is a remnant of one of these events. For 10 points, name these explosions of stars that are more energetic than novas
These events are the likely site of rapid neutron captures called the r-process.
supernovae