It would be worrisome if the Andromeda galaxy was found to be the largest spiral galaxy in the known Universe because it would put us in a special place. The conflicts with the Cosmological Principle.
The Hubble Constant becomes smaller (it's the slope in the v-d diagram!). The Hubble Time is 1/Hubble Constant, so it becomes larger.
The Highway Hubble Constant is the slope of the v-d diagram. It's 2 h-1.
The Big Bang occured 30 minutes ago.
40 Mpc
2400 km/s
12 A
60 km/s/Mpc
Our measurement shows that space is Euclidean or flat.
The mean density of the Universe has to be equal or very close to the critical density
a. is true, b., c., d., and e. are false
The person in the moving lab observes that the time in your lab is passing more slowly and the yard-stick is shorter than one yard.