The study of infrared energy produced by astronomical objects. Infrared is a form of energy with a longer wavelength and lower frequency than visible light. It is produced by relatively cool objects, such as planetary systems and clouds of interstellar dust. Earth's atmosphere absorbs most infrared energy, so it is best studied with telescopes in space or aboard high-altitude balloons or aircraft.
Keep up with everything in the sky with a subscription to our daily radio program, hosted by Sandy Wood.
For more skywatching tips, astronomy news, and much more, read StarDate magazine.
StarDate depends on the support of listeners and astronomy enthusiasts like you. Please consider making a tax-deductible contribution to StarDate.
StarDate is brought to you in part through the generous support of our underwriters. Interested in underwriting? Let us know.
©2013 The University of Texas McDonald Observatory
