* Astronomy

Blobrana · L

RE: Maniitsoq impact crater

Blobrana · L

Google earth file Maniitsoq impact crater.kmz (2kb, kmz)

Blobrana · L

Oldest known impact crater found

A 100 kilometre-wide crater has been found in Greenland, the result of a massive asteroid or comet impact a billion years before any other known collision on Earth.
The spectacular craters on the Moon formed from impacts with asteroids and comets between 3 and 4 billion years ago. The early Earth, with its far greater gravitational mass, must have experienced even more collisions at this time - but the evidence has been eroded away or covered by younger rocks. The previously oldest known crater on Earth formed 2 billion years ago and the chances of finding an even older impact were thought to be, literally, astronomically low.
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Blobrana · L

Expedition finds worlds oldest impact site

Scientific detective work has discovered the oldest known impact site in the world. The 100km wide scar in Greenland was caused when a large asteroid or comet collided with the Earth three billion years ago.
The previous oldest known crater, in South Africa, was blasted out of the planet a billion years later.
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Location: 65°15'N, 51°50'E