DR. S. GULL & DR. J. FIELDEN / SCIENCE PHOTO LIBRARY DR. S. GULL & DR. J. FIELDEN / SCIENCE PHOTO LIBRARY
False-colour image of the galaxy M84 made by a radio telescope at a wavelength of 6cm. M84, also known as NGC 4374, is an elliptical galaxy within the Virgo Cluster some 50 million light years away. Elliptical galaxies contain only old stars, as there is little or no interstellar gas present within them from which to create new stars. This may be due to interactions with other galaxies within the local cluster.
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