Science ❯ Astronomy ❯ Galaxies
Massive Galaxies Messier 105 M87 M87 Galaxy Formation Processes Ancient Galaxies Old Galaxies NGC 6505 Formation NGC 3384 Dust Formation Spiral Galaxies Dust Origins IC 3430 Formation and Characteristics Star Formation Supermassive Black Holes NGC 2937
Using gravitational imaging of a lensed radio arc, researchers measured a roughly one‑million‑solar‑mass perturber with no detected light.
