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Images Dated 20th July 2008

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 2730 pictures in our Images Dated 20th July 2008 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery. We are proud to offer this selection in partnership with Science Photo Library.

Halo stars in Andromeda Galaxy Featured 20 Jul 2008 Print

Halo stars in Andromeda Galaxy

Halo stars in Andromeda Galaxy (M31), Hubble Space Telescope (HST) image. Spiral galaxies, like M31, have a spherical halo of stars surrounding them. The stars in the halo are less densely packed than in the spiral arms or nucleus (neither seen). This view shows a small part of the halo, containing an estimated 300, 000 stars. Also seen, are distant galaxies and a globular cluster (bottom centre). This is the first time M31's faint halo stars have been seen, allowing their ages to be estimated and providing evidence for past galactic collisions of the Andromeda Galaxy. Image created in May 2003, using the HST's Advanced Camera for Surveys (ACS)

© Nasa/Esa/Stsci/T.brown/Science Photo Library

Gas pillar in the Eagle nebula Featured 20 Jul 2008 Print

Gas pillar in the Eagle nebula

Gas pillar in the Eagle nebula (M16), Hubble Space Telescope image. This is a 9.5-light-year-tall pillar of cold gas and dust silhouetted against a bright emission nebula. The dense pockets of dust and gas in this pillar may be in the process of condensing into stars. The upper part of the pillar is glowing as it is heated and compressed by radiation from hot young stars out of frame at upper left. The colours here come from ionised gases; the blue from oxygen and the orange from hydrogen. The Eagle nebula lies around 7000 light years from Earth in the constellation Serpens Cauda. This image was taken in November 2004 by the Advanced Camera for Surveys (ACS) on the HST

© Nasa/Esa/Stsci/Hubble Heritage Team/Science Photo Library

Galileo Galilei, caricature Featured 20 Jul 2008 Print

Galileo Galilei, caricature

Galileo Galilei. Caricature of the Italian Renaissance scientist Galileo Galilei (1564-1642), holding a telescope. Galileo, although not the inventor of the telescope, refined its design and was the first to use it to study the night sky. Using it, he discovered the four largest moons of Jupiter (now called the Galilean moons in his honour) and observed the full set of phases of Venus. This last observation confirmed that the geocentric Ptolemaic model of the solar system had to be wrong, and backed up the new heliocentric model of Copernicus. He also noticed that pendulum swings take the same time regardless of the amplitude, and he determined the law of acceleration

© Gary Brown/Science Photo Library