What remnants are typically left behind after a star explodes?
Answer
A light echo and a remnant like a neutron star or a black hole
The death of a star through a supernova does not leave nothing behind. The aftermath creates an expanding cloud of debris often visible as a light echo. The core that collapses, depending on its initial mass, often remains as a highly dense object such as a neutron star or, if the mass is sufficiently high, a black hole. These remnants allow scientists to study the high-energy physics of stellar collapse.
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