Scientists look 12 billion years in the past to study dark matter - study
Studying dark matter requires light from other galaxies, but you can't study far-away galaxies that don't have enough light. But scientists have figured out how to do it.
Pattern of radio waves on the sky caused by the combination of radiation from the first stars and the effect of dark matter. Blue regions are those where the dark matter cooled down the ordinary matter most strongly. (photo credit: PROF. RENNAN BARKANA)ByAARON REICHUpdated:
