Galaxies in our universe don't contain enough mass to stick together. In fact, they don't contain even close to the amount of mass that the need for gravity to hold them together. Scientists believe that an elusive substance known as dark matter makes up for the 70% of missing mass in galaxies. However, dark matter is never been observed and we may never be able to observe it's effects.
What are left with is that we know that something else is involved in holding galaxies together because of our observations, but we don't know what it is. Canadian Scientists say that we don't need to invoke a magic particle to explain this situation, we just need to modify our understanding of gravity. John Moffat, an astronomer at the University of Waterloo in Canada, and Joel Brownstein, his graduate student, say that their Modified Gravity (MOG) theory explains how galaxies are sticking together without invoking a magic particle.
Published by GreenLantern
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3 Comments
Post a CommentIf you guys are interested in MOG and dark matter get this - John Moffat just published his first book (just released last month) that explains it all in detail - I've just submitted a book review to AC which should be up this week. it's called Reinventing Gravity: A Physicist Goes Beyond Einstein.
Available in all the usual places -amazon, barnes and noble etc. I highly recomend it!
Great intro, but where's the rest of the article? What did the scientists find??? You can't leave me hangin'!!!
I think sometimes there are things that scientists are trying to discover however will never find the true answer until Decision Day.