Megamasers and Cosmology
Artist’s conception illustrating a disk of water-bearing gas orbiting the supermassive black hole at the core of a distant galaxy. By observing maser emission from such disks, astronomers can use geometry to measure the distance to the galaxies, a key requirement for calculating the Hubble Constant.
Credit: S. Dagnello
Technical Details | |
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Telescope | HST |
Categories:
Cosmology
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