[meteorite-list] OT - Happy Crab Nebula Day!

[Patrick Wiggins]

I've often wondered and maybe someone here can answer.

Since 1054 was long before the 1582 conversion from the Julian to Gregorian calendar, is the July 4 date that gets mentioned for the first sighting of supernova a Julian date or has it been converted to Gregorian?

???

patrick


On 04 Jul 2011, at 10:25, Gary Fujihara wrote:

> Cosmic Fireworks: On July 4, 1054, Chinese astronomers observed a "guest star" in the constellation Taurus, the result of a star exploding or going Supernova. At mag -6, SN1054 (Supernova of 1054) became about 4 times brighter than Venus, was visible in daylight for 23 days, and lasted a period of two years. Today we can still see remnants of SN1054 as the Messier Object 1 (M1) Crab Nebula.
> 
> http://bigkahuna-meteorites.com/_M1.jpg
> 
> Oh, and for those terrestrially bound in the USA, Happy Fourth of July!
> 
> Gary Fujihara
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