Joined Feb 2011
3,554 Posts | 72+
Amelia, Virginia, USA
With the several threads about asteroids and meteors recently, I thought I'd post this link again. You can click on a continent and see all the known (in a very few cases suspected) impact craters on Earth. Click on the impact name and see an image with some data, such as age and original size (often what we see is the eroded remnants, often considerably smaller than the fresh impact).
Some are not visible on the surface.
Consider that the Earth is 3/4 ocean, and that many more are left to be discovered or have eroded entirely, and you can see how many times Earth has been hit.
Here is the map for North America, but click on the link and explore. There is plenty of information about meteors, impacts, and their characteristics.
Earth Impact Database
Just to the east of the circular feature on the east coast of Hudson's Bay (not an impact, despite it's appearance), you will see a double impact, where two huge objects hit at the same time. Broke up in the atmosphere, I guess. (Clearwater East and West)
This is Manicouagan.
Some are not visible on the surface.
Consider that the Earth is 3/4 ocean, and that many more are left to be discovered or have eroded entirely, and you can see how many times Earth has been hit.
Here is the map for North America, but click on the link and explore. There is plenty of information about meteors, impacts, and their characteristics.
Earth Impact Database
Just to the east of the circular feature on the east coast of Hudson's Bay (not an impact, despite it's appearance), you will see a double impact, where two huge objects hit at the same time. Broke up in the atmosphere, I guess. (Clearwater East and West)
This is Manicouagan.
