[petuniasevan]

Vacation Announcement

I will be on vacation from June 2nd through June 9th.
If anyone would like to volunteer to post APOD during that time, please FReepmail me.
Otherwise the APOD will not be posted as I will be visiting relatives in California.

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M83 - Southern Pinwheel

Right Ascension	13 : 37.0 (h:m)
Declination	-29 : 52 (deg:m)
Distance	15000 (kly)
Visual Brightness	7.6 (mag)
Apparent Dimension	11x10 (arc min)

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This galaxy is visible in binoculars in the constellation Hydra as a fuzzy "star". Finder chart below:

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[petuniasevan]

[Graewoulf]

I saw on a TV Science show some expert showing an image such as yours and then stating that the inner and outer stars rotate around the center of the galaxy at the same speed.

Then he made the statement that the DARK MATTER was somehow the cause of this apparent contradiction. I did not understand how this conclusion was arrived at. Would you care to shed some of your starlight on this for us?

[SuziQ]

Wow, what a stunning image!