Over?
Sun’s Magnetic Field to Flip
Indian scientists have come up with the first physics-based prediction of the upcoming solar cycle — also called sunspot cycle — scheduled to start early in 2020. The prediction revealed how the sun will behave and the expected conditions in space over the next decade, which will help in strategically plan missions to space and in the upkeep of space-based technologies.
Every 11 years, the sun’s magnetic field flips because the north and south poles switch places, which marks the beginning of a new solar cycle. The solar cycle affects the activity on the surface of the sun such as sunspots, which are caused by the sun’s magnetic fields. When the magnetic field lines near sunspots tangle, cross, or reorganize, it can lead to an explosion of energy called a solar flare that can cripple satellites, trip electric power grids and lead to large-scale telecommunication breakdowns.
https://phys.org/news/2018-12-earth-magnetic-poles-flip.html
Earth's magnetic poles could start to flip. What happens then?
The last reversal occurred between 772,000 and 774,000 years ago. Since then, the field has almost reversed 15 times, called an excursion, dropping in strength significantly but not quite reaching the threshold needed before rising again. This is when we are most at risk—as the field decays and then recovers its strength. The last excursion occurred 40,000 years ago, and evidence suggests we are heading in that direction again.
Read more at: https://phys.org/news/2018-12-earth-magnetic-poles-flip.html#jCp