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July Friday 21, 2017 at 14:35
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Today's Picture

Atiny moon with a scary name , Phobos emerges from behindthe Red Planet in this timelapse sequence from the Earth-orbiting HubbleSpace Telescope .Over 22 minutes the 13 separate exposures werecaptured near the 2016 closest approach of Mars to planet Earth. Martians have to look to the westto watch Phobos rise, though.The small moon is closer to its parent planet than any othermoon in the Solar System, about 3,700 miles (6,000 kilometers) above the Martian surface .It completes one orbit in just 7 hours and 39 minutes.That's faster than a Mars rotation, which corresponds toabout 24 hours and 40 minutes.So on Mars, Phobos can be seen to rise abovethe western horizon 3 times a day.Still, Phobos is doomed .


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