Quote:
Originally Posted by RickS
Yes, some really tiny ones as well, though I suppose they might actually be very large  |
I wanted to find out how big the larger of the 2 small galaxies is compared to our own Milky Way.
I did some quick scaling by printing the picture of M83 & the little galaxies on one page.
I measured
110mm wide for M83 & 10mm wide for the largest of the 2 small galaxies.
Those galaxies are about 600 million light years away.
M83 is 15 million light years away,
therefore it appears 600/15 = 40 times apparently smaller.
Given that M83 is half the size of our Milky Way
lets double it's size to
220mm and also multiply 40 x 10 mm = 400mm.
If we divide 400mm/ 220 mm = 2.
Therefore the larger of the 2 tiny galaxies is twice the size of our Milky Way galaxy
& therefore about the same size as Andromeda.
It's a large galaxy indeed.
cheers
Allan