Scientists found the oldest material on Earth from an ancient meteorite

It dated back to about 7 billion years ago which is about 2.5 billion years before the sun, Earth and the rest of the solar system formed.
Sheena

Updated: Jan 14, 2020 06:08:48 pm

Scientists found the oldest material on Earth from an ancient meteorite

14 January 2020 Current Affairs:Scientists found a meteorite that was crashed into rural southeastern Australia in a fireball in 1969 contained the oldest material ever found on Earth. The stardust predated the formation of the solar system by billions of years.

Oldest meteorite:
♦ The oldest of 40 tiny dust grains trapped inside the meteorite fragments were retrieved around the town of Murchison in Victoria state.
♦ It dated back to about 7 billion years ago which is about 2.5 billion years before the sun, Earth and the rest of the solar system formed.
♦ All of the dust specks that were analyzed in the research came from before the solar system's formation which is known as pre-solar grains.
♦ About 60% of them dated between 4.6 and 4.9 billion years old. Among the stardust, the oldest 10% dated to more than 5.6 billion years ago.
♦ The pre-solar grains from the meteorite was examined by Philipp Heck, curator of meteorites at Chicago's Field Museum. It had a piece of the meteorite in its collection.
♦ In order to separate the oldest grains from the relatively younger ones of the meteorite, scientists crushed fragments of the meteorite into a powder. It was then dissolved in acid, which left only the pre-solar particles.
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