Galileo's quick look at Venus.Galileo's quick look at Venus Scientists have finally received the pictures of Venus' atmosphere taken in February by the Galileo spacecraft spacecraft Vehicle designed to operate, with or without a crew, in a controlled flight pattern above Earth's lower atmosphere. Since streamlining is not needed in the high vacuum of this environment, a spacecraft's shape is designed according to its mission (see as it whipped around the planet -- one of a series of maneuvers that will give Galileo the speed needed to propel pro·pel tr.v. pro·pelled, pro·pel·ling, pro·pels To cause to move forward or onward. See Synonyms at push. [Middle English propellen, from Latin it to Jupiter, where it should arrive in 1995. Many spacecraft have looked at Venus' clouds, but Magellan both photographed the cloud tops The cloud top (or the top of the cloud) is the largest altitude of the visible portion of the cloud. It is traditionally expressed either in metres above the Earth (or planetary) surface, or as the corresponding pressure level in hectopascal (hPa, equivalent to the traditional but and recorded near-infrared amissions from deeper clouds. The lower cloud patterns differ distinctly from those at the top, report Galileo scientists analyzing the images radioed to Earth from the craft on Nov. 19 to 21. The near-infrared images revealed convection zones convection zone A region of turbulent plasma between a star's core and its visible photosphere at the surface, through which energy is transferred by convection. within clouds due to rising heat, while the cloud tops appeared fluffier--due to reflected sunlight--in the visible-light photos. |
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