The object left behind after the 1054 AD supernova explosion has been observed at the center of the Crab nebula. The object is a

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The Crab nebula is the remnant of a supernova explosion that was observed in 1054 AD. At the center of the nebula, there is a compact object known as the Crab pulsar, which is a type of neutron star. Neutron stars are extremely dense and compact objects that form when the core of a massive star collapses in a supernova explosion. The Crab pulsar is also a very strong source of radiation across a wide range of wavelengths, including X-rays and gamma-rays. This makes it an important object for studying the properties of these extreme objects and the physical processes that occur in supernova explosions.

The Object Left Behind After the 1054 AD Supernova Explosion