2006-07-09 11:41:59 · 6 answers · asked by simply_made 4 in Science & Mathematics ➔ Astronomy & Space
seems to be about 235 +or- 15 Million years.
It's measured by making note of the blue/red shift of stars in our galaxy to see how fast they are moving and from this determine how fast we are moving around the centre of our galaxy.
No Melvin, plastic surgery is not involved.
2006-07-09 11:54:17 · answer #1 · answered by Paul C 4 · 0⤊ 0⤋
Google gave me at least two references for a cosmic year. One is an ancient Chinese belief that there is a cosmic cycle which they call a cosmic year lasting 129,600 Earth years.
The other definition is a modern one. It is the time required for the Sun to make one orbit around the Milky Way galaxy. It is about 220 million years.
2006-07-09 21:47:25 · answer #2 · answered by campbelp2002 7 · 0⤊ 0⤋
The cosmos is extremely old and a cosmic year is very long. However, when a cosmic year comes to an end, you can always expect great things to happen, just like when your earth year comes to an end.
2006-07-09 18:50:43 · answer #3 · answered by lester2590 2 · 0⤊ 0⤋
By cosmic year!
Cosmetically!
2006-07-09 18:45:16 · answer #4 · answered by melvin m 3 · 0⤊ 0⤋
There's no such thing as a cosmic year, which dimensions are you from?
2006-07-09 20:13:53 · answer #5 · answered by Science_Guy 4 · 0⤊ 0⤋
I think that it is the time it takes for sun to make one revolution around the milky way galaxy.
2006-07-09 18:50:36 · answer #6 · answered by drupe_1999 1 · 0⤊ 0⤋