Questions tagged [exotic-matter]
Questions regarding non-baryonic matter, most notably, matter with negative mass or imaginary mass, such as tachyons.
2
questions
7
votes
1
answer
142
views
Have we detected spectra of exotic atoms in stars?
I was reading this wikipedia article on positronium (a type of exotic atom) and noticed it mentioned that positronium has a spectra (of course).
So naturally this makes me wonder, have we looked at ...
4
votes
1
answer
98
views
Can we see atomic positronium lines in space? What could be learned from it and what are current challenges to doing so?
This answer to Have we detected spectra of exotic atoms in stars?1 currently ends:
Estimates for observing lines corresponding to transitions between different bound states of positronium are not ...