DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY
Radio telescope. Artwork of the silhouette of a radio telescope under the Milky Way galaxy seen in visible light. Radio telescopes detect radio waves from space. These are emitted by objects such as nebulae (clouds of gas and dust), and non-luminous objects in distant galaxies. Radio waves can be detected by ground-based astronomy because Earth's atmosphere is transparent to radio waves. Objects look very different when viewed in visible light and in radio. This is because stars rarely emit radio waves. Radio waves have much less energy than visible light, generally being emitted by objects that are cool and dark.
Model release not required. Property release not required.