August 2008

When galaxies collide

This is some pretty trippy stuff. The space telescope Hubble picked up some images of two clusters of galaxies about 5.7 billion light years away colliding with each other, making for some pretty cool images. Not only that, scientists are now able to get some insight on things like "dark matter" and "dark energy". According to recent research 23% of the Universe consists of dark matter, 4% is ordinary matter such as the galaxies, stars, gas, and planets; the remainder 73% is made up of dark energy. What does this all mean to us? I don't know, I'm still having a hard time wrapping my mind around these concepts. Does anyone have a way of explaining this that makes sense to the average person?