Assertion: supernova | /r/HasProperty | tycho's star
Facets:
Source sentences:
text: At least seven supernovas have been observed to have occurred in our galaxy in the last two millennia, including one in Taurus described by Arab, Chinese, and Japanese astronomers in 1054; Tycho's star in Cassiopeia, observed by Tycho Brahe and others in 1572; and the supernova of 1604 that Kepler and others observed.
text: At least seven supernovas have been observed to have occurred in our galaxy in the last two millennia, including one in Taurus described by Arab, Chinese, and Japanese astronomers in 1054; Tycho's star in Cassiopeia, observed by Tycho Brahe and others in 1572; and the supernova of 1604 that Kepler and others observed.