Cartwheel galaxy, multi-wavelength image
Cartwheel galaxy, multi-wavelength image. Around 100 million years ago, a smaller galaxy passed directly through the centre of the Cartwheel galaxy. This caused shock waves to propagate out through the galaxy, which caused bursts of star formation. The bright blue ring marks the region where huge, powerful ultraviolet-emitting stars have formed. The inner orange ring is the second wave, but this has far less star formation than the first wave. It is not known if the colliding galaxy was one of the two at lower left. The images were taken in X-rays by the Chandra Space Telescope (purple), in UV by GALEX (blue), in green light by the Hubble Space Telescope, and in infrared by the Spitzer Space Telescope (red).
© Nasa/Jpl-caltech/Science Photo Library
'A Conversation of Virtuosis...at the Kings Arms', 1735, (1947). Creator: Gawen Hamilton
'A Conversation of Virtuosis...at the Kings Arms', 1735, (1947). Group portrait of some of the leading British artists and architects of the 1730s who used to meet at the King's Arms in New Bond Street, London: engraver Bernard Baron, landscape gardener Charles Bridgeman, painter Michael Dahl, architect James Gibbs, painter Joseph Goupy, artist Gawen Hamilton (painter of the picture), painter Hans Hysing, architect William Kent, artist Matthew Robinson, sculptor John Michael Rysbrack, antiquary William Thomas, engraver George Vertue, painter John Wootton. Painting in the National Portrait Gallery, London. From "British Clubs", by Bernard Darwin. [Collins, London, 1947]
© The Print Collector/Heritage Images
circa 1930: The statue of Abraham Lincoln, found in Parliament Square, London, which is a copy of a statue by American sculptor Augustus Saint-Gaudens, in Chicago. (Photo by Herbert Felton/Herbert Felton/Getty Images)
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