What is Tycho's Supernova?
[[File:Tycho-supernova-xray.jpg|thumb|280px|Tycho's supernova remnant. Image taken by the [[Chandra X-ray Observatory]]]] '''Tycho's Supernova''' {{ndash}} also called '''SN 1572''' or '''B Cassiopeiae''' (B Cas) – was a [[supernova]] of [[Type Ia supernova|Type Ia]] in the constellation [[Cassiopeia (constellation)|Cassiopeia]]. It is one of eight supernovae visible to the naked eye in historical records. It appeared in early November 1572 and was independently discovered by many people. It is called Tycho's because [[Tycho Brahe]] published a book the next year about what he and other astronomers saw. The remains of the supernova was first detected by [[radio telescope]]<nowiki/>s. It was often known as '''3C 10''', which is a radio-source designation, but now people call it '''Tycho's supernova remnant'''. It can be seen by light telescope. {{Supernovae}} [[Category:Supernovae]] [[Category:Astronomical objects]] [[Category:1572]]