Astronomers around the world do not take their eyes off the one baptized as AR3310. It is a huge sunspot that is four times larger than the Earth and that can be seen with the naked eye.
The US National Oceanic and Atmospheric Administration has warned that there is a 20% chance that this spot could emit a "powerful X-class flare" That type of explosion could bring radio blackouts that would affect aviation, and long-lasting radiation storms. But power grids and pipelines in many places could also have serious problems because of this phenomenon.