GABBRO Gabbro is a plutonic igneous rock with the same mineral composition as basalt. However, as a plutonic rock it cooled much more slowly, resulting in a coarse grained texture. Gabbro is dense, greenish or dark gray. |
See Steve's video interview about asteroid capture at Moonandback: Part 1 Part 2 Part 3 |
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See Steve's blog Ramblings On The Future Of Humanity (recent post) A Project Plan for Space Based Solar Power
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