English example sentences with "Cassiopeia"

I know nothing about constellations. I can only recognize Orion and Cassiopeia. Oh, and the Big Dipper, too.
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One night in 1572, Danish astronomer Tycho Brahe saw what he thought was a brilliant new star in the constellation Cassiopeia. (We now know he was observing a supernova.) In 1604, a second supernova was observed. These discoveries caused scientists to seriously question Ptolemy's theory that all stars were contained in an outermost sphere of the universe that never changed.
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That's Cassiopeia.
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It’s a type of neutron star known as a magnetar and is located about 10,000 light-years away from Earth in the constellation Cassiopeia.
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