Scientists did not expect to find much water ice on Mars which is likely the third largest water reservoir on Mars.
Scientists think that some asteroids may have been like “Molecular Factories”, which generat life’s ingredients and ship them to Earth by meteorite impacts.In January 2000, a large meteoroid exploded in the atmosphere over northern British Columbia, Canada, and rained fragments across the frozen surface of Tagish Lake.Their pieces were collected within days and kept preserved in their frozen state.With the help studies of the Tagish Lake meteorite fragments scientist found that various fragments had been exposed to different amounts of water, and suggest that water alteration may account for the diversity in amino acid production.
The new results may be the first clear evidence that water percolating through the asteroid parent body caused some molecules to be formed and others destroyed.According to scientists the Tagish Lake meteorite provides a unique window into what was happening to organic molecules on asteroids 4.5 billion years ago.Also they think that their findings could shed light on how important interstellar geology may have been to the rise of life on Earth.
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