Moonrise, Planet Earth . ... Credit Copyright: STS-35 Crew, NASA Explanation: During the Astro-1 astronomy mission of December, 1990, Space Shuttle astronauts photographed this stunning view of the full moon rising above the Earth's limb. In the foreground, towering clouds of condensing water vapor mark the extent of the troposphere, the lowest layer of the planet's life-sustaining atmosphere . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...