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An unusual sapphire, diamond and emerald ring, by Manuel Bouvier. Photo Christie's Image Ltd 2010 The cushion-shaped sapphire weighing...

Little priest : “Soft matter”. Photographed by Maxime Imbert for...

Photo: LMC - N49, or, Supernova remnant . N 49 , or, Stellar shrapnel, is the brightest supernova remnant in the Large Magellanic Cloud, approximately 160,000 light - years from Earth. It has been assessed to be roughly 50,000 years old. The latest pictures of N 49 by the Chandra X - Ray Observatory have revealed a bullet - shaped object traveling at about 5 million miles an hour away from a bright X - ray and gamma - ray point source, probably a neutron star with an extremely powerful…