Curiosity captura un eclipse en Marte


Yes, Mars gets eclipses too! This brief animation, made from ten raw subframe images acquired with Curiosity’s Mastcam on September 13 — the 37th Sol of the mission — show the silhouette of Mars’ moon Phobos as it slipped in front of the Sun’s limb.

The entire animation spans a real time of about 15 minutes.

As a moon Phobos really is an oddity. In addition to its small size – only 16 miles (27 km) across at its widest – and irregular shape, it also orbits its parent planet at a very low altitude, only 5,840 miles (9,400 km) and thus needs to travel at a relatively high velocity in order to even stay in orbit. Phobos actually orbits Mars over three times faster than Mars rotates, appearing to rise in Mars’ western sky. And its orbit is so low that it can’t even be seen from the polar regions!
Since Phobos, and its even more petite sibling Deimos, are so small, the Mars rovers won’t ever see a total solar eclipse. In fact these events are often referred to as transits rather than actual eclipses.
Phobos orbits Mars at an altitude of about 5,830 miles (9377 km); Mars Express image
Read more: http://www.universetoday.com/97408/curiosity-captures-a-martian-eclipse/#ixzz26lOGpgqs

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