Spring siding

These images taken by the Mars Reconnaissance Orbiter (MRO) are of the nucleus of Comet C/2013 A1 or Siding Spring during the comet's transit near Mars on October 19, 2014. Comet Siding Spring is on its first trip near the Sun and came from the Oort Cloud at the outer edge of the system the sun The image composed of two versions of two of the best photographs of the comet by HiRISE, in the upper part the images from dynamic range, show the nucleus and the bright halo near the nucleus. At the bottom of the image you see two clarified versions of the outer halo, in which the inner area is saturated. The pictures on the left and right were taken nine minutes apart. Photo: NASA/JPL-Caltech/University of Arizona

The nucleus of the Siding Spring comet that passed by Mars is smaller than expected

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Comet Siding Spring in the sky of Mars. A raw (night) image taken by NASA's Curiosity robotic vehicle on the surface of Mars. From a NASA tweet about an hour after the comet's approach to Mars, 19/10/2014

The first raw image of Comet Siding Spring from Mars

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Illustration of the passage of the Siding Spring comet near Mars. Source: NASA

A ball of light in the sky of Mars

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The passage of the Comet Sliding Spring by Mars (not in the right proportions). Image: NASA

NASA is primed and ready for Comet Siding Spring's flyby of Mars this evening

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