How many more times will our solar system go around the galaxy?

xfacilitatorx

When will it all end? Our Sun, together with the whole Solar System, is orbiting the Galactic Center at the distance given, on a nearly circular orbit. We are moving at about 250 km/sec, and need about 220 million years to complete one orbit (so the Solar System has orbited the Galactic Center about 20 to 21 times since its formation about 4.6 billion years ago). http://www.seds.org/messier/more/mw.html http://www.seds.org/messier/more/mw.html This era, 100 trillion trillion trillion years from now, marks the end of all planets. Protons, the subatomic particles at the center of the nuclei of atoms, will begin to decay. Without protons, matter evaporates into radiation. Carbon-based life is not possible, because carbon does not exist without protons. http://www.cnn.com/TECH/9701/15/end.universe/ So divide 100,000,000,000,000,000,000,000,000,000,000,000,000 by 220,000,000 and you get.......Ah to heck with it! A whole lotta times more! Apr 11 06, 10:18 PM

soonappear

Thanks xfacilitatorx, so about another 20 times if the sun lives to be 9b. Nice site referencing the Messier objects and butterflies. Apr 11 06, 10:54 PM

xfacilitatorx

I think the Universe is trillions of years from being anywhere near ready to start back in upon itself. I would imagine that the earth will have decayed and crumbled into cosmic dust by the time this time comes. So I believe that the solar system will go about the galaxy millions of times more. And by the way....You are most welcome! Apr 11 06, 11:06 PM