Bullet cluster

Tag archives for Bullet cluster

So much more than an Atom Smasher

“Forget it. I didn’t have that thing inside me where I wanted to smash against somebody and watch them break. I was too sensitive for that and disliked being that sensitive.” -Josh Brolin How do you figure out what something is made of? You take it apart — cracking it open if necessary — and…

Why we need Dark Matter in the Universe.

Last week, Pamela Gay over at Star Stryder pointed me to a press release which claimed that, among other things, perhaps dark matter wasn’t necessary. So I wrote a guest post on her blog explaining why it was. Apparently, some people still aren’t convinced. So I will lay out for you all the reasons I…