Source: ESA/Herschel
Massive galaxy merger caught in the act.
Image credits:ESA/NASA/JPL-Caltech/UC Irvine/STScI/Keck/NRAO/SAO.
A rare encounter between two gas-rich galaxies spotted by ESA’s Herschel space observatory indicates a solution to an outstanding problem: how did massive, passive galaxies form in the early Universe? (read more)
