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Saturday, 8 August 2015

"THE DARK SIDE OF THE MOON".........

Shared publicly  -  Yesterday 8:17 AM
 
NASA put a satellite out there to capture the dark side of the moon.  They made the images into an animation of the transit.
The satellite, Deep Space Climate Observatory (DSCOVR), is positioned at a Lagrangian point, so it can hold a stable orbit using the gravitational pull of the earth and moon.  It is one million miles from its home planet - what a super zoom on that camera!

Wikip says "the Lagrangian points are positions in an orbital configuration of two large bodies, where a small object affected only by gravity can maintain a stable position relative to the two large bodies. The Lagrange points mark positions where the combined gravitational pull of the two large masses (sun and earth, here) provides precisely the centripetal force required to orbit with them. There are five such points, labeled L1 to L5, all in the orbital plane of the two large bodies."
A camera aboard the Deep Space Climate Observatory (DSCOVR) satellite captured a unique view of the moon passing in front of the Earth last month.