APOD 2004 Feb 21

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Expand view Topic review: APOD 2004 Feb 21

by Empeda » Fri Sep 30, 2005 12:15 pm

Not usually - this is an unusual example - probably as a result of a galactic collision.

weird

by lllbr0kenlll » Thu Sep 29, 2005 11:44 pm

i didnt know that...
really,.. they rotate like a saw blade....like digging into space?

by BMAONE23 » Thu Sep 01, 2005 5:04 pm

Isn't it a matter of perspective though. if you look at a clock face on, the hands rotate clockwise (hence the phrase) but if you look at the clock from the reverse side the hands appear to rotate counter-clockwise. All galaxies may in fact rotate in only one direction but due to our perspective, they appear to rotate differently. It is wierd though that the arms rotate opposite to the direction of their spiral.

APOD 2004 Feb 21

by makc » Thu Sep 01, 2005 6:17 am

I came there from today's APOD link. Just thought could it be that it's not NGC 4622 rotates clockwise, but it's Milky Way rotates faster, and hence an illusion :?:

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