NASA Comet Rosetta Trajectory GIF space log blog august 2015 Rosetta GIF NASA Comet Trajectory

NASA Comet Rosetta Trajectory GIF space log blog august 2015 Rosetta GIF NASA Comet Trajectory
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Interesting thoughts!

Only once since I began a twenty year fascination with Einstein's time/light theory have I heard from anyone connected to NASA who dared to address this fact to a sublimely ignorant public. He was hushed up in the slow lane with indifference and a public that couldn't tell you how the world can make it through the next decade without imploding. With a list of almost infinite problems how can we think of getting people out that far, much less plan for the return of our astronauts after 4000 generations of time.

"For the smallest craters that we're looking at, we think we're starting to see where the Moon has gone through so much fracturing that it gets to a point where the porosity of the crust just stays at some constant level. You can keep impacting it and you'll hit regions where you'll increase porosity here and decrease it there, but on average it stays constant," Dr. Soderblom continued to explain to the press on September 10, 2015.

The astronomers observed this effect in the upper layer of the lunar crust, termed the megaregolith. This layer is heavily pockmarked by relatively small craters, measuring only 30 kilometers or less in diameter. In contrast, the deeper layers of lunar crust, that are scarred by larger craters, appear not to have been as badly battered, and are, therefore, less porous and fractured.

The twin spacecraft flew in an almost-circular orbit until the mission ended on December 17, 2012, when the probes were intentionally sent down to the lunar surface. NASA ultimately named the impact site in honor of the late astronaut Sally K. Ride, who was America's first woman in space and a member of the GRAIL mission team.

"The whole process of generating porous space within planetary crusts is critically important in understanding how water gets into the subsurface. On Earth, we believe that life may have evolved somewhat in the subsurface, and this is a primary mechanism to create subsurface pockets and void spaces, and really drives a lot of the rates at which these processes happen. The Moon is a really ideal place to study this," Dr. Soderblom explained in the MIT Press Release.

In September 2015, a team of astronomers released their study showing that they have detected regions on the far side of the Moon--called the lunar highlands--that may bear the scars of this ancient heavy bombardment. This vicious attack, conducted primarily by an invading army of small asteroids, smashed and shattered the lunar upper crust, leaving behind scarred regions that were as porous and fractured as they could be. The astronomers found that later impacts, crashing down onto the already heavily battered regions caused by earlier bombarding asteroids, had an opposite effect on these porous regions. Indeed, the later impacts actually sealed up the cracks and decreased porosity.

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