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Thursday, March 15, 2018

NASA picked up a signal from the lost station, silent for almost two years

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.

photo: nasa.gov

Spacecraft STEREO

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.

Now experts are striving to figure out how the machine affected 22 month battery life and is it possible to use it to conduct all scientific research for which it was intended.

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.


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