Mystery as flock of sheep walk in circle for twelve days
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By USH
Sergei Krikalyov; born 27 August 1958) is a Russian mechanical engineer and former cosmonaut. As a prominent rocket scientist, he is a veteran of six space flights and ranks third to Gennady Padalka and Yuri Malenchenko for the most time spent in space: a total of 803 days, 9 hours, and 39 minutes.
Krikalev was stranded on board the Mir station during the dissolution of the Soviet Union on December 26, 1991. As the country that had sent him into space no longer existed and his return was delayed.
As a result he stayed in space for 311 consecutive days, twice as long as the mission had originally called for, before he could return to Earth again.
Because Krikalev spent so much time in space away from Earth’s center of gravity, time dilation (or the slowing down of clocks) caused him to be 0.02 seconds older than other people born at the same time as him.
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By European Space Agency
Video: 00:00:58 ESA’s Solar Orbiter has solved the mystery of a magnetic phenomenon in the solar wind. It has taken the first ever image of a ‘switchback’ in the solar corona, confirming its predicted ‘S’ shape. A switchback is defined by rapid flips in magnetic field direction. The observed switchback is linked to an active region associated with sunspots and magnetic activity where there is an interaction between open and closed magnetic field lines. The interaction releases energy and sends the S-shaped disturbance into space. The new data suggest that switchbacks could originate near the solar surface, and may be important in understanding the acceleration and heating of the solar wind.
Solar Orbiter is a mission of international collaboration between ESA and NASA.
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Credits: ESA; see onscreen for individual image credits.
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By European Space Agency
With data from its closest pass of the Sun yet, the ESA/NASA Solar Orbiter spacecraft has found compelling clues as to the origin of magnetic switchbacks, and points towards how their physical formation mechanism might help accelerate the solar wind.
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