Hubble Finds Giant Halo Around Andromeda Galaxy
Scientists using the Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy, our nearest massive galactic neighbor, is about six times larger and 1,000 times more massive than previously measured. The dark, nearly invisible halo stretches about a million light-years from its host galaxy, halfway to our own Milky Way galaxy. If the Milky Way has a similarly huge halo, then the two galaxies' halos may be nearly touching already and quiescently merging long before the two massive galaxies collide.
Comments:
Probably spherical aberration from Hubble Optics... <img class='' src='http://new.astromart.com/astromart/javascripts/sceditor/emoticons/grin.png' alt='grin' title='grin'/>
So, another article titled "Does Dark Matter Really Exist? Or is it a Figment of our Imagination?" is on this site (I have yet to read it). The mass of the observed halo: what percentage of the theoretical mass of dark matter required to solve the rotation speeds observed is in the halo? As far as dark matter: if you can't observe it, measure it or explain it, maybe the model used to determine the need for dark matter to complete your equation is incorrect. Too much science and too many taxpayer dollars are spent feeding science that is based on computer models and not on direct and measurable observation. Ask the question? Of course. Feed millions of dollars to focus on the magical faeries? No. My $0.02
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