New Species of Dwarf Galaxy in the Galaxy Cluster Ecosystem?
Do all galaxies need dark matter? Astronomers think they may have discovered a dark-matter-free dwarf galaxy hiding in the tentacle of a jellyfish galaxy!
A Universal Accounting Problem: Tension in Reionization Estimates
Recent findings from JWST are challenging our understanding of how galaxies made the universe largely transparent. How can we further improve our models of this era in the universe’s history?
Blowout: AGNs Quenching Star Formation in Dwarf Galaxies
Astronomers tackle a big question regarding some of the smallest galaxies: how do massive black holes at their centers affect star formation?
Ultra-Faint Dwarf Galaxies: Not as Small as We Thought?
Astronomers use pulsating stars to look for stellar halos around ultra-faint dwarf galaxies, some of the smallest galaxies in the universe.
Detecting Ghostly Neutrinos that Skim Earth’s Crust
Particle physicists and astronomers have devised a new technique to observe high-energy neutrinos and have begun taking data with a new telescope.