Did a Supernova Mark 17th Century King's Birth?
Tuesday, April 19, 2011 - 18:00
in Astronomy & Space
The famed supernova Cassiopeia A may have been visible in 1630, five decades earlier than thought.
Updated by artificial intelligence Sat, 3 Jan 2026, 15:40:35 UTC Learn more
- Tell your friends
- Get science news via