Orientation Points

Midlertidig notat 2010-11-06

1.

Supernova-eksplosion i stjernebilledet Cassiopeia 1572 den 6. november 1572

https://sites.google.com/site/kallast01/home/supernova/sn-1572

2015-11-17:

2.

Herkules A, et supermassivt sort hul