Add Yahoo as a preferred source to see more of our stories on Google. Spiral galaxies, like Messier 77 shown here, helped astronomers learn about the existence of dark matter. NASA, ESA & A. van der ...
Add Yahoo as a preferred source to see more of our stories on Google. (CREDIT: Pixabay) Dark matter keeps getting blamed for the universe’s big patterns while staying stubbornly out of reach. You ...