Galaxies have been eating each other contiueously since the big bang. A trillion or so years from now our Milky way galaxy shall be consumed by the Adromada galaxy.

incredible. FOLLOW THE LINKS,.

Yup good clip, has implications for many phenomena that have puzzled scientists recently even global warming.

Implications in Global Warming?

It has been postulated that this is the real reason for both global warming since higher energy levels of the Milky Way are almost certain to cause our Sun to burn hotter and emit higher energies. Indeed, temperatures have been seen to rise on virtually all the planets in our system. This seems quite apart from any local phenomenon like greenhouse gases etc.

You can't go blaming the sun and galaxy for global warming. The other kids won't like you. This thing called "science" doesn't fly in our culture. It's obviously our fault our galaxy is cannibalizing. If we weren't poluting our own galaxy, it wouldn't go taking matter from others.