The Universe is a big place, and it is getting bigger. That is a little bit of a problem for us. For the last 13.8 billion years it has just been swelling. Some people think it will burst, others that we will just get very separated from the rest of the Universe. Therein lies a problem though. What is in the rest of the Universe?
Now we could probably make a guess, however it would be inaccurate. The reason is because we simply can only see a little bit. The problem is that the distance between our galaxy and other galaxies is constantly increasing, this has the bizarre side effect of causing the light from those galaxies to travel further. In fact the galaxies we can see are fairly close, and only a very small part of the Universe. We just cannot see the rest of the Universe because the light simply hasn’t had time. Read the rest of this entry »