The more we look among the stars and galaxies, the weirder things seem to get.

Even space itself is puzzling, for example. Recent studies suggest that the fabric of the universe stretches more than 150 billion light-years across -- in spite of the fact that the cosmos is 13.7 billion years old.

From super-fast stars to the nature of matter, here we cover other strange and mysterious elements of the universe.

http://dsc.discovery.com/space/top-10/strange-universe/space-10-weirdest-things-universe.html