The Hoba meteorite has this name
because it is lies on the farm "Hoba West" not far from Grootfontein,
in the Otjozondjupa Region of Namibia. It has been exposed due to its large
mass, has never been moved from where it fell. The Hoba meteorite is believed to
have fallen more than 80,000 years ago. In 1920 a farmer, Jacobus Hermanus
Brits discovered Hoba meteorite, when he encountered object while ploughing one
of his fields with an ox when his plow suddenly screeched to a halt. During
this chore, he heard a loud metallic scratching sound and the plough came to an
abrupt halt. He was curious about what he had run into. The obstruction was
excavated, and Brits notified local authorities about the find, it was quickly
determined that this was a meteorite. The site was declared a National Monument
in 1955, though you couldn't visit it until 1985.
The main mass is assessed at more
than 60 tonnes, making it the largest known meteorite "as a single piece.
Moreover Hoba meteo is most massive naturally occurring piece of iron known at
the Earth's surface. It is inferred that the Earth's atmosphere slowed the
object to the point that it fell to the surface at terminal velocity, thereby
remaining intact and causing little excavation. Hoba meteorite is a tabloid
body of metal, measuring 2.7×2.7×0.9 meters, composed of about 84% iron and 16%
nickel and 0.76% cobalt. Due to the presence of a rare radioactive nickel
isotope, experts have been able to determine the age of the Hoba meteorite,
which is estimated at in-between 190 million and 410 million years.
In 1954 the curator of the American
Museum of Natural History in New York tried to purchase the Hoba Meteorite. It
was only owing to transportation problems owing to its weight that the
meteorite remained in Namibia. Immediately following this matter a group of
concerned locals brought the 'near calamity' to light and the following year it
was proclaimed a National Monument. Thus, almost 5 % of the total numbers of
meteorite pieces that fall on Earth are same in their composition to the Hoba
one. They are also huge, but not like this one, at least, not for now.
It is amazing that this meteorite
is not surrounded by a crater. The objects of this size should punch through
the atmosphere at a very high rate of speed and hit earth with ample force to
blast a momentous crater, but no crater is present around the site of the
meteorite. This could be recommends that it fell to earth at a lower rate of
speed than expected. Therefore few scientists’ believed that the flat shape of
the thing may be responsible for its low velocity at impact. The site has now
been much improved and a decent chance to get close up. Even though anyone can
touch it and stand upon. A small tourist center and is visited by thousands of
people each year.
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