Over the last 4.5 billion years, Earth has been slammed with space rocks several times, seemingly at random.
Those rogue space rocks have their own holiday: International Asteroid Day, celebrated on June 30.
NASA via Giphy
The commemorative holiday exists to raise awareness of the threat posed by asteroid impacts.
John White Photos/Moment/Getty Images
Beyond Siberia, our planet bears many scars from past impacts, some so massive that they’re visible from space.
Here are 7 impressive impact craters around the globe:
Jose A. Bernat Bacete/Moment/Getty Images
Copernicus Sentinel, processed by ESA
7. Dinosaurs were still roaming the Earth when an asteroid fragment created the Ouarkziz crater in Algeria 70 million years ago.
Copernicus Sentinel, ESA, via Wikimedia Commons
Copernicus Sentinel, ESA
4. Mauritania’s Tenoumer Crater crafted an almost perfect circle in ancient rock during an impact 10,000 and 30,000 years ago.
2. Captured here in false color is Gosses Bluff crater in Australia, which came into existence 140 million years ago.