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Astronomy and the radio spectrum
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Astronomy and the radio spectrum
Astronomy and the radio spectrum. This part of the electromagnetic spectrum can largely pass through the atmosphere. Yellow lines are the main emission wavelengths of carbon monoxide (CO), hydrogen cya- nide (HCN), ammonia (NH3), water (H2O), formalde- hyde (H2CO) and hydrogen (H). Blue lines are wavelengths that are kept free of human radio traffic to prevent such " noise" drowning out astronomical sources. Short radio waves are absorbed in the lower atmosphere, so instruments to detect them must be on mountains or in space. Longer wavelengths can be detected at ground level. Radio wave sources include the Milky Way (upper centre) and a variety of other bodies
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Media ID 6446993
© JULIAN BAUM/SCIENCE PHOTO LIBRARY
Astrophysics Observatory Radio Astronomy
EDITORS COMMENTS
This print showcases the fascinating relationship between astronomy and the radio spectrum. The image beautifully illustrates how certain wavelengths of the electromagnetic spectrum, represented by yellow lines, have the ability to pass through our atmosphere with ease. These wavelengths correspond to emissions from various celestial bodies such as carbon monoxide, hydrogen cyanide, ammonia, water, formaldehyde, and hydrogen. To ensure that human radio traffic does not interfere with astronomical sources, depicted by blue lines in the photo print, specific wavelengths are kept free from any disruptive noise. This precautionary measure allows astronomers to observe these cosmic phenomena without any disturbances. It is worth noting that shorter radio waves are absorbed in the lower atmosphere; therefore specialized instruments must be situated on mountains or deployed in space to detect them effectively. However, longer wavelengths can be detected at ground level itself. The mesmerizing Milky Way takes center stage in this artwork along with a multitude of other celestial objects scattered throughout the image. This stunning visual representation serves as a reminder of humanity's continuous exploration and understanding of our vast universe through disciplines like astrophysics and radio astronomy. This remarkable photograph is brought to you by Science Photo Library – an invaluable resource for those passionate about astronomy detectors and all things related to electromagnetic spectra within the field of science.
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