Why does hydrogen fuse in a star?
121231
How does gravity cause nuclear fusion in stars?
46074
How to find hydrogen wave-functions?
18171
Why do electrons occupy the space around nuclei, and not collide with them?
95946
What causes the expansion of space?
150985
Why can't the Klein-Gordon equation explain the hydrogen atom but the Dirac equation does?
31367
How is the Starkiller Base supposed to work more than one time, given how it draws its power?
96397
Optical explanation of images of stars?
2842
Photons from stars--how do they fill in such large angular distances?
69388
Spectroscopic properties of hydrogen: H vs. H2
125794
What is the origin of spin of celestial objects?
128619
Why does an electron shell further away from nucleus has higher energy level?
52974
Why are the higher angular momentum states of a hydrogen atom closer to the nucleus?
10496
Why do covalent bonds form?
56219
Why are oxygen and hydrogen compressible, but water is barely compressible
80142
Does all hydrogen originate from the Big Bang?
73648
Why does a supernova explode?
45667
What prevents the accumulation of charge in a black hole?