Could Alpha Centauri be made of anti-matter?
13269
How would we tell antimatter galaxies apart?
50575
Collisions in space/vacuum
149215
Does a particle annihilate only with its antiparticle? If yes, why?
82927
What is "pure energy" in matter-antimatter annihilation made of?
99150
Is there evidence of dark matter in our galaxy?
92463
How can dark matter collapse without collisions or radiation?
15029
How do we know that the nucleus isn't a quark-gluon plasma?
125791
What happens if we put together a proton and an antineutron?
9388
Can matter be described as the result of the curvature of space, instead of vice versa?
37317
If you have a single atom in a box, what state of matter would it be in?
1059
Identification of particles and anti-particles
130760
What are matter waves made of and what is their speed?
25220
Has the gravitational interaction of antimatter ever been examined experimentally?
50700
Could Dark Energy just be particles with negative mass?
48055
How would one detect antihydrogen in the universe?
467
Matter-antimatter asymmetry problem
114728
What exactly is an anti-neutrino?