Just a fast question, Ill be glad if you answer it. I was wondering how fast does the space expand, but I wasn't able to find answer anywhere around the internet, the only thing I was able to get is the rate of expansion - 72 km/sec/Megaparsec, but I dont know if I can derive the speed of expansion from that. Also I obtained information that the speed of expansion is increasing. So how fast does the universe expand? Are there any good theories?