Over the weekend the U.S. space Agency NASA for the first time from 1 October 2014 managed to get in touch with the spacecraft STEREO-B, designed to study solar activity. After more than 22 months the experts were able to reestablish contact with the probe, and now receive a steady signal.
1 October 2014 STEREO-B for 72 hours was out of sight from the Earth and communication was lost with him. Although working parallel probe STEREO-A has since continued to operate successfully, really useful information two spacecraft could be obtained only by joint efforts.
To connect to STEREO-B was not possible without small two years. To adjust it, in the end, succeeded with the help of a Network of deep space communications NASA is working since 1958 and still growing international network of radio telescopes and communications equipment.
The spacecraft STEREO-B and its “twin” STEREO-A was launched on 26 October 2006, orbit close to the orbit of the Earth around the Sun. The letters A and B, ending the names of the two space stations, not only represent the first two letters of the Latin alphabet, but also contain a hint of the main difference between them – first, following its orbit slightly “ahead of” Land Ahead – “ahead”) and the second is a bit “behind” (behind “behind”). Together, these two devices are designed in order to obtain three-dimensional images of structures and phenomena on the Sun (just as two eyes allow to obtain three-dimensional images of human). Stereoscopic effect allows STEREO-A and STEREO-B with higher precision to determine the position of the source of emission in the Sun and its trajectory, which in particular, allows to better predict space weather effects.