All categories / Astronomy / Quasars

Quasars, also known as quasi stellar objects, are galaxies which are very distant but very luminous, so they appear star-like from Earth. The source of light appears concentrated in the nucleus, and is probably related to a central, supermassive black hole. Quasars have high red shifts, so must be very distant and by studying them we can paint a picture of the evolution of galaxies a comparatively short time after the Big Bang. This set contain images at different wavelengths, from radio to x-ray, a selection of artworks and portraits of astronomers whose work has been pivotal in studying quasars properties.

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