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Related to ultraviolet astronomy: Gamma ray astronomy
The branch of astronomy that uses observations of emissions in the ultraviolet part of electromagnetic spectrum to study extraterrestrial sources such as stars, planets, galaxies, and interstellar gas clouds.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Astronomy) the study of radiation from celestial sources in the wavelength range 91.2 to 320 nanometres, 12 to 91.2 nanometres being the extreme ultraviolet range
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014