Northern Lights
Flickr: Dag Endre Opedal
The Northern Lights, also known as the aurora borealis, are always a sight to behold, but this year the lights may have been even more spectacular — due to a huge radioactive storm that hit the earth this week.
The storm, apparently the biggest since 2005, hit Earth's atmosphere on Sunday, creating an "eruption of solar plasma, called a coronal mass ejection", which created even stronger lights than usually seen.
“It has been absolutely incredible,” a British astronomer told the AP.
We've included some of our favorite images of the northern lights from the last year (and the country in which they were taken) below.