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Scientists are taking this opportunity to study the outer boundary, known as the magnetopause, and determine how the Sun's plasma and magnetic energy couples into the Earth's environment. Pre-Flight Crew and Equipment Photos. Titan is the second largest moon in the solar system and is about 50 percent larger than Earth's moon. Plasma burps from the Sun called coronal mass ejections (CMEs) temporarily push the boundary outwards, for example, so that it washes back and forth over the spacecraft like a wave on the beach. . MENU Images Videos Graphics Lunar Tunes Infographic; Song List; Fact Sheets Images You Might Also Like. 15 and FE Sunita Suni Williams swapped places to join the Atlantis crew. Ron Baalke ron@jpl.nasa.gov . The Andromeda Galaxy is located nearly 2.5 million light-years away from Earth. Consequently, main U.S. Air Force (USAF) attention in 2007 continued to be on addressing space acquisition problems such as the ones posed by the missile warning program SBIRS (Space Based Infrared System), eventually to replace the DSP-23 constellation, with some significant progress made. APOD: 2007 January 31 - Movie: Cassini Crosses Saturn's Ring Plane The new observations collected from CloudSat combined with other A-Train observations are beginning to shed new understanding on important climate processes, in particular about (1) cloud changes in the polar regions, and the effects of these changes on the energy balance of the Arctic, their relation to weather changes and their role in sea ice change, (2) how frequently clouds rain and how much rain falls over the global oceans - thus offering insight into processes critical to the cycling of fresh water, and (3) how properties of clouds AND precipitation together change with increasing aerosol, thus offering new insights into how aerosol might indirectly affect climate. These data have now been officially incorporated into the NOAA National Weather Service operational weather forecasts. Atlantis delivered two major truss segments, S3/S4, to the station.