If energy is neither created nor destroyed, where is the extra space coming from?
107971
Hubble's law and conservation of energy
62419
Einstein equation $E=mc^2$: Does it mean an object without mass does not have energy?
116033
Energy conservation limited by uncertainty principle
3471
Why does holding something up cost energy while no work is being done?
87000
The temperature in space is about 3K, however there are almost no atoms in space. How can there be residual heat?
111578
Why is gravitational potential energy negative, and what does that mean?
152431
Why is there free space at the end of NTFS Partitioned Drives?
31848
Where does gravity get its energy from?
110021
extracting energy from cosmological expansion
2657
Can energy be taken out of the QFT vacuum?
127315
My space used and free space doesn't add up
107902
Is Kinetic Energy stored as (rest) mass?
79614
Many-worlds: Where does the energy come from?
89301
Is the total energy of the universe constant?
20401
Why doesn't matter pass through other matter if atoms are 99.999% empty space?
45283
Why don't virtual particles violate conservation of mass/energy?
82927
What is "pure energy" in matter-antimatter annihilation made of?