Supernova, hypernova and kilonova are all terms used to describe different types of stellar EXPLOSIONS, ranging from relatively common to extremely rare and energetic events; EXPLOSIONS; Supernovae are the most common and are caused by the collapse of massive stars, while hypernovas are more energetic versions of supernovae and kilonovas result from the collision of neutron stars or black holes; In 2021, on average, approximately 66.5 Supernovae were observed every 24-hour period
