In ME2 with the recruit Tali mission, she was on Haestrom to gather data on the star in that system. To quote Mass Effect Wiki, "She explained that the data she had gathered on Haestrom's sun proved it was dying too quickly, possibly (as is elaborated later) due to dark energy affecting the mass of the star."
Now assuming the real ending to ME3 is yet to come (please god), do you think this has anything to do with the reapers, how to defeat them, etc. or was this just part of the plot? For some reason I always had a feeling this was somehow important/interesting and was really looking forward to finding out why the star was behaving like it was. Am I reading too much in to this or do you think it might play some part in the game?