The most energetic electromagnetic events in the universe, lasting milliseconds to minutes. They release more energy in seconds than the Sun will in its entire lifetime. They originate from massive star collapse or neutron star mergers.
The collapsed core of a massive star after a supernova, with 1.4-2 solar masses in a sphere about 20 km across. Incredib...
A powerful explosion at the end of a massive star's life, briefly outshining an entire galaxy. Supernovae scatter heavy ...
A region of spacetime where gravity is so strong that nothing, not even light, can escape once past the event horizon. B...
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