The planet we all live on is under attack by space debris all the time but since most of them are burnt and destroyed into the atmosphere so it is not usually a problem. And when one meteor manages to penetrate the destructive power of the Earth’s atmosphere, reaching the ground in the size of a small stone, the damage it can do is minimized decisively. Of course, once in a while (meaning every thousand or even millions of years) some huge meteorites manage to impinge on Earth almost intact and then do a lot of damage.
Despite the rarity of the phenomenon, these impacts are significant, with the signs left on Earth’s landscape serving as a grim reminder of the power of the Universe, which can wipe the human presence off the world at any time. Let’s see some amazing craters created by cosmic threats that threatened to make life on Earth disappear.
Apart from the famous Grand Canyon, Arizona had the chance to add an equally interesting tourist attraction 50,000 years ago, seeking the help of stars. A meteor with a diameter of 50 meters left a crater in the desert with a length of 1.5 km and a depth of 180 meters. Scientific calculations estimate the speed of the meteor in the moment of impact to be more than 45,000 km/h, while the size of the explosion is believed to be 150 times larger than the one created by the atomic bomb that hit Hiroshima, pulverizing the meteorite as a result. The surrounding landscape is in fact filled with a mist of molten nickel and iron.
Lake Bosumtwi Crater – Ghana
When you see a natural lake in almost perfect spherical shape, you can tell that something is off. As in the case of Lake Bosumtwi, a natural water reservoir with a diameter of 8 km, it was created when a meteorite of a diameter of 150 meters hit the area 1.3 million years ago. The research in the area is not easy, both because of the dense rainforest that surrounds the lake and the local tribe that considers it sacred, making any attempt for a scientific study extremely difficult. The crater remains one of the best preserved on Earth, a monument of the destructive force of the Universe.
Mistastin Lake- Labrador, Canada
It was about 38 million years ago when this most impressive hole appeared, measuring 17 × 11 km. However, it was originally much larger: the erosion caused by the glaciers in so many millions of years have shrunk it to its current dimensions. The strange thing with this particular crater, unlike the spherical shape that most of the craters have, this one has elliptical periphery, indicating that the space rock hit the ground from a small angle of incidence. Even more surprising is the small island in the center of the lake which may indicate that it is the tip of a more complex matrix of craters.