Images of the far-side of the sun taken by the European Space Agency's Solar Orbiter of a giant sunspot region makes aurora likely after May 22.

Images of the far-side of the sun taken by the European Space Agency's Solar Orbiter of a giant sunspot region makes aurora likely after May 22.

One of the largest sunspot regions in years will face Earth this week, potentially increasing the chances of northern lights from May 22 onwards.