Sun About To Magnetically Flip

The sun’s magnetic field is set for a reversal in the coming months. Credit: NASA

As the sun reaches a crescendo in its 11 year activity cycle this year, it’s also getting ready to go topsy-turvy. 

The sun’s global magnetic field is about to reverse—flipping its orientation so that north becomes south and south becomes north. Astronomers estimate that we may be only three or four months away from this mysterious solar magnetic field reversal.

This magnetic field flip occurs every 11 years as the sun reaches the mid-point of the solar maximum, a period of increased solar activity . Scientists monitoring the sun during its current cycle say that the sun’s inner electromagnetic dynamo—produced by the rotation of its plasma and the outward flow of energy—is about to change orientation between the northern and southern hemispheres.

The effects of the pole reversal will reverberate well beyond the sun. While there’s no need to worry about any Hollywood-type doomsday scenarios, this natural, ongoing solar event can create stormy space weather and intensify the geomagnetic storms that will buffet the Earth in the coming year. For skywatchers, this may translate into some beautiful auroras this coming season.

Even the protective bubble at the edge of the solar system, called the heliosheath—which lies billions of miles beyond Pluto and shields the planets from damaging cosmic radiation—is under the influence of the sun’s magnetic field. The heliosheth will feel the effects of this magnetic flip and become more robust. The improved shielding from cosmic radiation—while temporary— will directly benefit spacewalking astronauts and satellites vulnerable to these energetic, and destructive, particles .

Andrew Fazekas, aka The Night Sky Guy, is a science writer, broadcaster, and lecturer who loves to share his passion for the wonders of the universe through all media. He is a regular contributor to National Geographic News and is the national cosmic correspondent for Canada’s Weather Network TV channel, space columnist for CBC Radio network, and a consultant for the Canadian Space Agency. As a member of the Royal Astronomical Society of Canada, Andrew has been observing the heavens from Montreal for over a quarter century and has never met a clear night sky he didn’t like.
  • Joan

    After the pole reversal occurs, how soon could we expect
    to see its effects i.e. auroras?

  • Walter Mercado

    This isn’t a game. I wish (NASA) would stress that to society, and the Sun isn’t a toy you can play with and manipulated as though it were a piece of clay. Our Sun is the most powerful entity in our solar system…

  • Ima Ryma

    The sun’s magnetic field this year
    Will do a reverse of its poles.
    The north and south will reappear,
    Doing the opposite of roles.
    Ev’ry eleven years, the sun
    Does this topsy-turvy routine,
    No Hollywood type doomsday done.
    Dazzling auroras make the scene.
    Experts have theories on the why,
    But no one really knows for sure.
    Complicated – so simplify
    What makes this crescendo occur.

    Why are the sun poles ’bout to flip?
    A jumbo hamster makes the trip.

  • skp

    When scientists do not have any previous monitoring history for last 10 or 100 decades where is the question of worry ?

  • Dr. Ray C.

    The solar pole reversal creates changes in the light spectrum and frequency, thus changing or adding to the aurora effect. With a slight tweak all “I” phones will simultaneously ignite into a spectacular vision much like fireworks and we will all have to engage in “face to face ” conversations. :=)

  • Dude

    Walter… man has zero influence over the sun and its actions. We are utterly powerless to affect the sun in any way. How would we play with it and manipulate it? What are you even trying to say?

  • Gary

    Walter, what makes you think someone is “playing” with the sun? Re read the article. This is NORMAL for the sun. Relax and enjoy the show.

  • Tukur

    Do other planets also flip and experience reversals of some sorts?

About the Blog

Researchers, conservationists, and others share stories, insights and ideas about Our Changing Planet, Wildlife & Wild Spaces, and The Human Journey. More than 50,000 comments have been added to 10,000 posts. Explore the list alongside to dive deeper into some of the most popular categories of the National Geographic Society’s conversation platform Voices.

Opinions are those of the blogger and/or the blogger’s organization, and not necessarily those of the National Geographic Society. Posters of blogs and comments are required to observe National Geographic’s community rules and other terms of service.

Voices director: David Braun (dbraun@ngs.org)

Social Media