The dwarfs that reionzied the universe may have shut their star-forming engines off in the process.
They ruled the UV skies… or did they?
Many dark galaxies may be hiding unseen in the universe—but we still might be able to detect them. Here’s how.
Rotation curves—the first clue that led us to the existence of dark matter—may also provide clues as to the dark matter’s particle identity.
…you can get stars, and a dumbbell of light. We’ll take a closer look at one of them.