NASA - Hubble Space Telescope patch.
Nov. 10, 2020
The galaxy UGCA 193, seen here by the NASA/ESA Hubble Space Telescope, is a galaxy in the constellation of Sextans (the Sextant). Looking rather like a waterfall, UGCA 193 appears to host many young stars, especially in the lower portion of this view, creating a striking blue haze and the sense that the stars are falling from “above.”
The blue color of UGCA 193 indicates the stars that we see are hot — some more than six times hotter than our Sun. We know that cooler stars appear to our eyes as redder, and hotter stars appear bluer. A star’s surface temperature and color are also linked to its mass, with heavier stars “burning” at higher temperatures, resulting in a blue glow from their surfaces.
Hubble Space Telescope (HST)
For more information about Hubble, visit:
http://hubblesite.org/
http://www.nasa.gov/hubble
http://www.spacetelescope.org/
Text Credits: European Space Agency (ESA)/NASA/Lynn Jenner/Image, Animation Credits: ESA/Hubble & NASA, R. Tully; Acknowledgment: Gagandeep Anand.
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