>makes you wonder what could
>be out there!
If you calculate the mass of all visible objects in a galaxy, and then compute the amount of mass it would take to hold the galaxy together via gravity as it spins, you find out that all observed objects only account for 1/5th of the expected total mass! Think of all those photographs from hubble, ground telescopes etc etc... hundreds of thousands of galaxys photographed and yet you are only seeing 1/5th of whats actually there.
Yes, alot of people wonder what else could be out there.
-DallanC