NASAのインスタグラム(nasa) - 8月18日 04時03分

These dots of color make up one of the most comprehensive portraits yet of the universe’s evolutionary history. This mosaic, captured with the ultraviolet vision of our Hubble Space Telescope (@NASAHubble), features approximately 15,000 galaxies, about 12,000 of which are star-forming – widely distributed in time and space.
Hubble’s ultraviolet vision opens a new window on the evolving universe, tracking the birth of stars over the last 11 billion years back to the cosmos’ busiest star-forming period, which happened about 3 billion years after the big bang. Because Earth’s atmosphere filters most ultraviolet light, Hubble can provide some of the most sensitive space-based ultraviolet observations possible.

Ultraviolet light has been the missing piece to the cosmic puzzle. Now, combined with infrared and visible-light data from Hubble and other space and ground-based telescopes, astronomers have assembled one of the most comprehensive portraits yet of the universe’s evolutionary history.

Credit: NASA, ESA, P. Oesch (University of Geneva), and M. Montes (University of New South Wales)

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