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Post by Chicago Astronomer Joe on Jul 17, 2004 14:39:17 GMT -6
Earth's Atmosphere may be Contracting
The crew abourd the ISS took this shot of the moon thru the Earth's atmosphere, but it should have been denser. From a vantage point about 360 km (225 miles) over the Earth, Space Station crewmembers photographed the crescent moon through the upper layers of Earth’s atmosphere. At the bottom of the image, a closed deck of clouds is probably at about 6 km (3 miles). The shades of blue grading to black are caused by the scatter of light as it strikes gas molecules of the very low density upper atmosphere.