Though they appear on photographic plates made by astronomers more than a century ago, they looked like ordinary stars, and raised no curiosity. (public.nrao.edu)
It looks like the big boom was caused when two ordinary stars crashed into each other some 49 million years ago, Lets hope it was a no - fault galaxy. (scientificamerican.com)
The discrepancy is even worse at the cores of the universe's tiny dwarf galaxies, which have few ordinary stars but lots of dark matter. (quantamagazine.org)