Where does all the energy in the universe come from?
2377
Is the total energy of the universe zero?
79708
Is the energy density of vacuum uniform in the whole universe?
10362
Does the universe have a center?
141320
Particle energy in general relativity?
129816
Experimental observation of matter/antimatter in the universe
84458
What's the real fundamental definition of energy?
43888
Age of universe?
10553
Does the universe have an edge/boundary/barrier? If yes, what is at the edge?
22168
What keeps mass from turning into energy?
115200
Why does energy have to be emitted in quanta?
7243
About Work and Energy
2253
If the universe is expanding, what is it expanding into?
136062
Can we get energy from the Earth's rotation?
21256
If energy can neither be created nor be destroyed,what is the ultimate source of energy?
136281
Is the universe expanding, or is everything in it getting smaller?
59491
How, on a physical level, does ATP confer energy?
152415
Why "Dark Energy" is called energy instead of force?