
Massive cluster of galaxies Abell 1689 creates a strong gravitational effect on background and older galaxies, seen as arcs of light. Astronomers found the large population of distant dwarf galaxies from when the universe was between two to six billion years old. This cosmic time is critical as it is the most productive time for star formation in the universe. Credit: NASA, ESA, B. Siana, and A. Alavi
Using the gravitational lensing, astronomers have discovered a large number of dwarf galaxies in the early universe. This could reveal important details about a productive period of star formation in the universe billions of years ago. The findings build on a growing body of knowledge about dwarf galaxies, the smallest and dimmest galaxies in the universe.
It is believed that dwarf galaxies p...
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