query: Are there entire anti-matter galaxies?
positive_passages.docid: 13269
positive_passages.text: How would we tell antimatter galaxies apart?
negative_passages.docid: 114728
negative_passages.text: What exactly is an anti-neutrino?
negative_passages.docid: 115879
negative_passages.text: Why can't dark matter be black holes?
negative_passages.docid: 76603
negative_passages.text: Only the Sith deal in absolutes?
negative_passages.docid: 61618
negative_passages.text: Could the missing antimatter lie outside the observable universe?
negative_passages.docid: 156003
negative_passages.text: Dark energy and dark matter
negative_passages.docid: 86456
negative_passages.text: Could the universe's antimatter be hiding in black holes?
negative_passages.docid: 92463
negative_passages.text: How can dark matter collapse without collisions or radiation?
negative_passages.docid: 51684
negative_passages.text: Is it possible that black holes might devour all masses of the universe?
negative_passages.docid: 99680
negative_passages.text: The Dual Nature of Matter
negative_passages.docid: 20811
negative_passages.text: Anti-Particle of Neutron
negative_passages.docid: 73523
negative_passages.text: Shapes of galaxies
negative_passages.docid: 64734
negative_passages.text: Distribution of Dark Matter around galaxies
negative_passages.docid: 10362
negative_passages.text: Does the universe have a center?
negative_passages.docid: 71847
negative_passages.text: Is there any evidence of black holes existing?
negative_passages.docid: 75058
negative_passages.text: Why isn't an infinite, flat, nonexpanding universe filled with a uniform matter distribution a solution to Einstein's equation?
negative_passages.docid: 56776
negative_passages.text: How close does a particle-antiparticle pair need to be for annihilation to happen?