If our universe were made of antimatter, what would it look like?
Antimatter Astronomy
Matter and antimatter emit the same spectra of light. So how do we know that distant galaxies aren’t made of antimatter?
Through The Looking Glass
Light from anti-hydrogen has been observed for the first time.
From Atoms To Everything
The pear-shaped nucleus of barium-144 could help solve one of the biggest mysteries in cosmology.
The Left Hand of Darkness
The universe is made of matter, but particle physics shows that matter and antimatter should be created in equal amounts. So where’s the antimatter?
Equivalent Principles
The equivalence principle states that everything falls at the same rate in a gravitational field. But what about antimatter? We think it would fall just like regular matter, but we haven’t yet been able to put that assumption to the test.