Mystery Meteorites crashed into EARTH 470 Million Years ago.
Researchers have discovered minerals from 43 meteorites that landed on Earth 470 million
years ago.
More than half of the mineral grains are from meteorites completely unknown or very rare
in today�s meteorite flow.
These findings mean that we will probably need to revise our current understanding of
the history and development of the solar system.
It is something so far UNKNOWN about our Solar System.
New reports indicate that scientists have discovered minerals from 43 different meteorites
that crashed into our planet around 470 million years ago.
Interestingly, more than half of the mineral grains come from meteorites which are either
completely unknown or extremely rare in today�s meteorites.
This indicates that we will most likely have to REVISE what we think about the history
and development of our solar system.
A new study published in the journal Nature Astronomy, by lead author Philipp Heck of
The Field Museum in Chicago offers important insight into the meteorites, Earth and the
history of our solar system.
Our planet is bombarded by around 18,000 and 84,000 meteorites bigger than 10 grams each
year, but the meteorites hitting Earth now, and those that crashed into our planet millions
of years ago are VERY different.
We found that the meteorite flux, the variety of meteorites falling to Earth, was very,
very different from what we see today.� explained Heck, in a press release from the
Chicago Field Museum.
�Looking at the kinds of meteorites that have fallen to Earth in the last hundred million
years doesn�t give you a full picture,� explains Heck.
�It would be like looking outside on a snowy winter day and concluding that every day is
snowy, even though it�s not snowy in the summer.�
An EXTINCT meteorite This discovery only confirms the theory presented
by geology professor Birger Schmitz at Lund University in Sweden, that he came across
evidence that supports the existed of an �extinct meteorite� �a meteorite dinosaur.
Referred to as �sterplana 065 and was found in a quarry outside Lidk�ping in Sweden.
The term �extinct� was attributed to it due to unusual composition: It is different
from all known groups of meteorites �especially those we see today�, and because it came
from a celestial body that was destroyed in ancient times.
Millions of years ago.
What does this mean?
Well, the discovery suggests that meteorites were most likely VERY different 470 million
years ago than they are today.
Such meteorites �with such a specific composition� no longer crash into our planet.
�The new results confirm the hypothesis.
Based on 43 micrometeorites, which are as old as �sterplana 065, our new study shows
that back then the flow was actually dramatically different.
So far we have always assumed that the solar system is stable, and have therefore expected
that the same type of meteorites have fallen on Earth throughout the history of the solar
system, but we have now realized that this is not the case,� says Birger Schmitz.
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