So… How fast is the universe expanding? Would it be incorrect to assume that new planets/stars or whole galaxies (basically anything but empty space) are being created every so often? If yes, how often (ie 500 planets a day… im sure that would be really really wrong)?
Im just trying to visualize how big the universe actually is so could i just say that the big bang occured about 20 billion years ago and multiply that by the speed that its currently expanding, or does the speed constantly change?
Finally, how (theoretically) is a wormhole created?
Try this site. And there are many others if you search for “Hubble’s Constant” or the age of the universe.
The rate at which the universe is expanding is a function of how far away you are talking about. The further away, the faster. If the currently accepted value of Hubble’s Constant is about right, then we won’t be able to measure anything older than about 15 billion years because at that age/distance the expansion rate is near the speed of light.
This thing is in a little bit of a state of flux right now because of some recent discoveries about the speed at which some galaxies, or something, have been measured as moving away. Maybe some physicist familiar with the current state of the physics will be along to help with that.