Eruptions on the Sun's surface could be a danger to the gadgets we love back here on Earth.
Lots of technology depends on satellites - like the tracking systems in car sat navs and in mobile phones.
But experts say space storms could damage these satellites, affecting the gadgets that rely on them.
It means that governments and tech companies are now working hard on ways to deal with this problem, before the next solar storm happens.
The last time the Sun was very active was about 10 years ago, when the technology we used every day didn't rely on satellites quite as much.
But scientists say the Sun will become more active again in the next few years. And as the gadgets we use now depend more on satellites than before, they could be affected a lot.