Category
page 1Astronomical objects discovered in the Middle Ages
SN 1006
supernova observed on 1006 AD, likely the brightest observed stellar event in recorded history
SN 1054
supernova which formed the Crab Nebula, first observed in 1054
IC 2391
open cluster in Vela
SN 1181
supernova within Cassiopeia, observed in 1181
Brocchi's Cluster
Asterism of 10 stars in the constellation Vulpecula
X/1106 C1
comet
Great Comet of 1264
comet