Sun will 'flip upside down' within weeks, says Nasa
The sun’s magnetic field will reverse polarity at some point in the coming weeks, sending ripples to the edge of interstellar space
The Sun is set to “flip upside down” within weeks as its magnetic field reverses polarity in an event that will send ripple effects throughout the solar system.
Although it may sound like a catastrophic occurrence, there’s no need to run for cover. The sun switches its polarity, flipping its magnetic north and south, once every eleven years through an internal mechanism about which little is understood.
The swap could however cause intergalactic weather fronts such as geomagnetic storms, which can interfere with satellites and cause radio blackouts.
Nasa said in August that the change would happen in three to four months time, but it is impossible to give a more specific date. Scientist won’t know for around another three weeks whether the flip is complete.
The impact of the transfer will be widespread as the sun’s magnetic field exerts influence well beyond Pluto, past Nasa's Voyager probes positioned near the edge of interstellar space.
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