The world's most famous meteorite: from Antarctica, 4 billion years old
Each meteorite is smashed by meteorites traveling at high speeds in the universe before it disintegrates at high speeds from the planet on which it is located. In the process of disintegration, there is inevitably melting and then condensation. During this process, the gases in the planet are incorporated by the meteorite, and then after the meteorite condenses, many small bubbles are formed in the meteorite. The gas in these bubbles is the gas of the planet.
The meteorite, number ALH84001, is a meteorite discovered by NASA in 1984 at Allen Ridge, Antarctica, and after scientists studied the isotopic composition of the gas bubbles within the meteorite, it was found to have the same isotopic ratios as those found on Mars, which suggests that ALH84001 came from Mars!
At the same time, research has found that this meteorite has a "long history", formed as early as 4 billion years ago, the same age as the origin of life on Earth, which is also one of the reasons why it has become the most well-known meteorite. The quest for meteorites is really our quest for the origin of life in our solar system. As of 2019, we have collected a total of 224 meteorites from Mars on Earth. These meteorites are of course extraordinarily valuable, but mankind can only dream of picking out a single ore from Mars that is most likely to contain signs of life and transporting it back to Earth.
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