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Originally posted by Phage
The "mysteries" have been resolved. In the threads you linked and others.
Originally posted by Phage
reply to post by Violater1
I'm very interested in Mars. I am very intrigued by the possibility that life existed or still may exist on Mars.
edit on 6/27/2011 by Phage because: (no reason given)
"This number is significantly lower than the density of meteoritic material associated with asteroids," said Pascal Rosenblatt of the Royal Observatory of Belgium. "It implies a sponge-like structure with voids making up 25 to 45 percent of Phobos' interior."
In addition, the researchers said, a highly porous asteroid — if that's what Phobos once was — probably would not have survived being captured by Mars' gravity.
Yet sponginess is consistent with the impact-formation hypothesis for Phobos, they added. Chunks of rock and rubble blown off Mars' surface would accrete somewhat haphazardly in its orbit, leaving interior pockets and voids.