
Some 80,000 years ago, a huge iron and nickel meteor landed on earth in what would eventually become the Hoba West farm near Grootfontein in Namibia. In 1920, a farmer ran into the big hunk of metal while plowing, and scientists have been studying the Hoba meteorite ever since. How did such a large meteorite survive and not leave a huge crater?
There are several reasons. One is the meteorite's shape, which is assumed to be a remnant of a much more massive meteor. It is a slab, and had to have arrived at a shallow angle, greatly slowed down by our atmosphere. You can almost imagine it coming in like a rock skipping across a lake. Its internal structure also plays a part. And 80,000 years later, it sits in the same spot where it landed because it weighs 60 metric tons, even after chunks have been taken over the past 100 years. Excavations have determined that Hoba actually had a crater once, although a strangely shallow one, which was filled in naturally over many centuries. Read about the massive Hoba meteorite and its weird history at ZME Science. -via Damn Interesting
(Image credit: Compl33t)









