Vast cosmic voids are far from empty — they’re hiding something dark
The vast, seemingly empty spaces between galaxies are not entirely empty. So what's in these cosmic voids?
Why do dwarf galaxies line up? ‘Zippers’ and ‘twisters’ in the early universe may solve a galactic mystery
Structures known as "zippers" and "twisters" in the early universe may explain why dwarf galaxies tend to line up with each other, as well as hint at how dark matter operates in the universe.