Did you know?

On 05/01/2022 0

In Did you know?

Hello everyone !

The guest star

Around the year 1006, astronomers around the world spotted a "guest star" in the sky.

 In the Kitab al-Shifa (Book of Healing), the Persian scholar Ibn Sina specifies that the star was visible for months and constantly changed color, before disappearing in a shower of sparks.

 If scientists have long thought that the star in question was a comet, it was actually a supernova.

The latter occurred 7,200 years ago, but its radiation did not reach Earth until the beginning of the first millennium.

The color changes precisely described by Sina are due to the merger of two white dwarfs.

This is obviously the first historical testimony of such a phenomenon.

Good day and good game ;)

Premiere supernova histoire



did you know joue jeu

Add a comment