NASA wants you to help classify galaxies captured by James Webb Telescope: What is Galaxy Zoo, and how to join / Gaze at a cluster of glowing galaxies | Space photo of the day for May 2, 2025 / Hubble Telescope snaps 1st images of clashing star clusters at the hearts of dwarf galaxies / Hubble unveils first images of ongoing star cluster mergers near center of dwarf galaxies / These dwarf galaxies in the Hydra cluster are baffling scientists: 'We found something we didn't expect' / Observers investigate a nearby galaxy cluster merger / Observations confirm that early-universe quasar neighborhoods are densely populated with companion galaxies / Dark matter ghosts its way through powerful (and messy) collision of galaxy clusters / Galaxy clusters could be used as dark matter colliders to understand nature of invisible particles, say scientists / Researchers explore an old galactic open cluster