I calculated what an iron bar stretching across the galaxy from one end to the other would be recently. It turned out to be something of the order of the weight of the earth, which surprised me. I thought it would be a lot more. Gives you an idea of just how big and heavy the world is.
Staurm Reviewed by Staurm on . I need somebody knowledgeable in physics So I have a little quandary that's been on my mind (on and off) for a good while now, hoping somebody can explain this. Now as we all know, the speed of light is currently considered the "universal speed limit", the fastest matter or energy can travel. So we'll keep that in mind. So, imagine that I have an iron bar (we'll just take away gravity for convenience) that's so long, it stretches from one end of the galaxy to the other. By this I mean the longest end to the other longest end, Rating: 5