標題: First full view of the sun revealed [打印本頁] 作者: tiffiant 時間: 2011-2-7 01:03 標題: First full view of the sun revealed
First full view of the sun revealed
Images captured by orbiting spacecraft
The U.S. National Aeronautics and Space Administration on Sunday released the first complete view of the sun's entire surface and atmosphere.
The agency said in a statement that "seeing the whole sun front and back simultaneously will enable significant advances in space weather forecasting for Earth, and improve planning for future robotic or crewed spacecraft missions throughout the solar system."
These photographs and video are the result of observations by NASA's two Solar Terrestrial Relations Observatory spacecraft, or STEREO. The duo are on diametrically opposite sides of the sun, 180 degrees apart. One is ahead of Earth in its orbit, the other trailing behind.
Launched in October 2006, STEREO traces the flow of energy and matter from the sun to Earth. It also provides unique and revolutionary views of the sun-Earth system. The mission observed the sun in 3-D for the first time in 2007. In 2009, the twin spacecraft revealed the 3-D structure of coronal mass ejections which are violent eruptions of matter from the sun that can disrupt communications, navigation, satellites and power grids on Earth.
The STEREO imaging and particle detecting instruments were designed and built by scientific institutions in the U.S., UK, France, Germany, Belgium, Netherlands and Switzerland.
\作者: tiffiant 時間: 2011-2-7 01:04
This still from NASA's Solar Dynamics Observatory (SDO) caught the action in freeze-frame splendor when the Sun popped off two events at once on Jan. 28, 2011. A filament on the left side became unstable and erupted, while an M-1 flare (mid-sized) and a Coronal Mass Ejection on the right blasted into space
