This was
your sky.
Supernova Remnant Cassiopeia A
Cassiopeia A is an expanding debris cloud from a massive star's supernova explosion. This remnant is a prime example of the final phase of a star's life, where enriched material is blasted back into space. Light from the supernova reached Earth around 1680, though it was not widely observed at the time. It is about 11,000 light-years away in the constellation Cassiopeia.
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In tropical astrology, 14 DEC 2023 falls under Sagittarius (♐). The sign's window runs from 11-22 through 12-21. Sagittarius points straight at the center of the Milky Way, our galaxy's brightest region. The Sun was crossing this region of the sky on 14 DEC 2023.