“The emission from the carbon gas in A1689-zD1 is much more extended than what was observed with Hubble Space Telescope,” says Seiji Fujimoto, a postdoctoral fellow at the Niels Bohr Institute, “and this could mean that early galaxies are not as small as they appear. If, in fact, early galaxies are larger than we previously believed this would have a major impact on the theory of galaxy formation and evolution in the early Universe.
A1689-zD1, a star-forming galaxy located in the Virgo constellation cluster, as seen by ALMA. Gravitational lensing makes the young galaxy appear nine times more luminous. Credit: ALMA /H. Akins , B. Saxton .
ScottyJ_PhD That means gravity acts quickly
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