Size of Smith Cloud on the Sky

Size of Smith Cloud on the Sky

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Fast Facts
News release ID: STScI-2016-04
Release Date: Jan 28, 2016
Image Use: Copyright
About this image

This composite image shows the size and location of the Smith Cloud on the sky. The cloud appears in false-color, radio wavelengths as observed by the Robert C. Byrd Green Bank Telescope in West Virginia. The visible-light image of the background star field shows the cloud's location in the direction of the summer constellation Aquila. The cloud is 15 degrees across in angular size – the width of an outstretched hand at arm's length. The apparent size of the full moon is added for comparison.

Active Galaxies/Quasars, Annotated Observations, Cosmology, Galaxies, Intergalactic Gas, Milky Way


Illustration: NASA, ESA, and Z. Levay (STScI);
Image: B. Saxton and F. Lockman (NRAO/AUI/NSF), and A. Mellinger