Trees keep records of past events because they live for a long time.
Scientists are studying big sun storms by looking at tree rings from Lapland.
They're focusing on a big sun storm called the Carrington Event from 1859
The goal is to understand how these storms affect Earth and prepare for future ones.
Many groups of scientists are working together on this project.
For the first time, they found signs of the Carrington storm in tree rings.
For the first time, they found signs of the Carrington storm in tree rings.
Sun storms happen when the sun's stuff meets Earth's magnetic field, making cool lights in the sky.
Stuff from sun storms makes a special thing called radiocarbon that trees can absorb.
Radiocarbon is like a space fingerprint that tells us about things in space.
his study is really important because it helps us know more about sun storms
and how they might affect our technology.