This hydrogen cloud is moving away from us at about 330 km/s -- hence its moniker of a very high velocity cloud. This picture was made from data obtained as part of the HI Parkes All-Sky Survey. This involves looking for the radio emissions of concentrations of hydrogen in the local universe. The cloud shown above covers more of the sky than the Moon and Sun put together, but emits very little visible light. The green ellipse in the corner of the image shows the resolution, or beam size, of the telescope, and the green and red parts of the image are those with the strongest emission. The raw data was reduced and imaged by David Barnes, Lister Staveley-Smith and Tom Oosterloo. Click here for a larger version of this image.

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