Ocean currents off the Americas
Ocean currents off the Americas. Satellite-based graphic showing ocean currents (swirling coloured lines) on an Earth globe centred on the Americas. The colours indicate ocean temperatures, ranging from the warm tropics (red) to cooler water (green) in more temperate latitudes. Ocean currents seen here include the warmer Equatorial Counter in the Pacific (centre left), and the Gulf Stream in the Atlantic (upper right). The dusk terminator (day-night line) is at lower right, marking the places from where the Sun is seen setting in the west as the Earth rotates on its axis.
© KARSTEN SCHNEIDER/SCIENCE PHOTO LIBRARY
Nebula in M17
Nebula in M17, Hubble Space Telescope (HST) image. This is a close-up of a region 3 light years wide in the Omega Nebula (M17). M17 is also called the Swan Nebula. A cloud (nebula) of hydrogen gas and dust covers the lower right half of the image. It is heated by nearby young, massive stars (not seen). Hot gases (blue) spread out from the warm surface (orange). The colours correspond to light emitted by hydrogen (green), sulphur (red) and oxygen (blue). The Omega Nebula, about 5500 light years away, is in the constellation Sagittarius. Image acquired from 29-30 May 1999, using the HST's Wide Field Planetary Camera 2 (WFPC2).
© Nasa/Esa/Stsci/J.hester,asu/Science Photo Library
RAF Bomb-Aimer at his position; Second World War, 1943
Photograph showing a Royal Air Force bomb-aimer at his position with the bomb release cable ready in his right hand, November 1943. The thick leather clothing required by air-crews to keep warm is clearly seen in this photograph.
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10219973
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