In 1181, Japanese and Chinese astronomers saw a bright light appear in the constellation Cassiopeia. It shone for six months,…
Historical astronomical records from China and Japan recorded a supernova explosion in the year 1181. It was in the constellation…
In 1181 CE, Chinese and Japanese astronomers noticed a "guest star" as bright as Saturn briefly appearing in their night…
Apparently not all supernovas work. And when they fail, they leave behind a half-chewed remnant, still burning from leftover heat…