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  A wide field image of the region of sky in which HD 189733b is located. In this image we can see the asterism of the 'Summer Triangle' a giant triangle in the sky composed of the three bright stars Vega (top left), Altair (lower middle) and Deneb (far left).
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  This Hubble image shows RS Puppis, a type of variable star known as a Cepheid variable. As variable stars go, Cepheids have comparatively long periods — RS Puppis, for example, varies in brightness by almost a factor of five every 40 or so days.
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  This artist's impression shows an extended ellipsoidal envelope - the shape of a rugby-ball - of oxygen and carbon discovered around the well-known extrasolar planet HD 209458B.
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  The NASA/ESA Hubble Space Telescope has snapped a striking view of a multiple star system called XZ Tauri, its neighbour HL Tauri and several nearby young stellar objects. XZ Tauri is blowing a hot bubble of gas into the surrounding space
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  The ring swirling around Saturn consists of chunks of ice and dust....
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  Herbig-Haro objects are some of the rarer sights in the night sky, taking the form of thin spindly jets of matter floating amongst the surrounding gas and stars