Astronauts surveying the geology of the Grand CanyonAstronaut Roger Chaffee and geologist Elbert King explore the Grand Canyon, March 5-6 1967.
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THERE’S TOO MUCH TO SAY ABOUT LAST SUNDAY'S EPISODE OF COSMOS.

Steve Newton and I have shared Cosmos reviewing duties, and this week Neil deGrasse Tyson and his team served us an overflowing plate.

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