How can we look back at our Universe 13Billion years ago?
139949
Looking out into the universe means looking back in time - how does that work?
36619
Effect of space time relativity on the age of the universe?
4132
What is the closest general-relativistic equivalent of a "time slice"?
97818
How do I find a previously discovered system?
65566
Estimating age of the universe by Hubble's law?
124618
How can we know the time frames for events in the early universe?
65001
Universe from nothing?
104255
Can we know the fundamental nature of space and time?
67531
Universe being flat and why we can't see or access the space "behind" our universe plane?
110021
extracting energy from cosmological expansion
64715
How is it possible that we see light from shortly after the big bang?
55505
How can a quasar be 29 billion light-years away from Earth if Big Bang happened only 13.8 billion years ago?
92846
How to estimate reindexing time?
13662
Did time exist before the Big Bang and the creation of the universe?
27178
Can we simulate the whole universe in computer?
75070
Will the CMB eventually recede outside our observable universe?
152130
Maximum size of the observable universe?