50 years ago, a meteorite fell and brought a rare sample from interstellar space. A new analysis revealed stardust that formed between 5 to 7 billion years ago. That makes the meteorite and its stardust the oldest solid material ever discovered on Earth.
Fifty years ago, a meteorite fell to Earth and landed in Australia, carrying with it a rare sample from interstellar space. A new analysis of the meteorite revealed stardust that formed between five to seven billion years ago. That makes the meteorite and its stardust the oldest solid material ever discovered on Earth.
Our sun is around 4.6 billion years old, meaning this stardust existed long before our sun or solar system were even a reality. The stardust found on the meteorite are called presolar grains because they formed before our sun. Photos: Wonders of the universe Photos: Wonders of the universeAfter stars die, they expel their particles out into space, which form new stars in turn. In one case, stardust became embedded in a meteorite that fell to Earth.
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