Amazing Mars Solar Eclipse Videos Caught by Curiosity Rover
Curiosity recorded the two Mars solar eclipse videos on back-to-back days last month, Aug. 19 and Aug. 20. In both cases, Phobos — the larger of Mars' two tiny moons — blotted out much of the sun's disk.
Mission team members created the two eclipse videos, which NASA released Thursday (Sept. 5), by stitching together photos Curiosity snapped with its workhorse Mast Camera — 52 images for the Aug. 19 eclipse and 89 pictures for the event one day later.
Curiosity's video of the Aug. 19 eclipse, however, also includes five frames captured by the car-size rover's rear hazard-avoidance camera. These images, taken 58 seconds apart, show the Martian landscape dimming markedly and then brightening again as Phobos completes its trek across the sun's face.
Phobos is just 14 miles (22 kilometers) wide on average, but it still manages to take a pretty big bite out of the sun during an eclipse seen from Mars. That's because the tiny satellite orbits very close to the Red Planet's surface — just 3,700 miles (6,000 kilometers) away.
For comparison, Earth's moon is about 2,160 miles (3,476 km) wide but zips around our planet at an average distance of 239,000 miles (384,600 km). That's just the right combination of size and distance to completely cover the sun's face, creating a total solar eclipse here on Earth when the alignment works out right.
Sources and more information:
Solar Eclipse on Mars The Curiosity rover captured Mars' moon Phobos as it traveled in front of the sun on August 20, 2013 . The sequence above is taken from photos snapped three seconds apart and spliced into video form . This sort of eclipse, where the nearer body doesn't quite cover the sun, is called an annular eclipse , after the Latin word...
The National Aeronautics and Space Administration's one-tonne Curiosity rover has captured the sharpest-ever images of a solar eclipse as seen from Mars. Images taken with a telephoto-lens camera on Curiosity rover catch the larger of Mars' two moons, Phobos, passing directly in front of the Sun -- the sharpest images of a solar eclipse ever taken...
( via space.com )
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