According to the British newspaper “Daily Mail”, it is well known to planetary scientists that water has existed on the red planet for at least 3.7 billion years.
But given the pre-determined age of NWA 7533 and its newly discovered mineral composition, the researchers now inferred that there was water around 700,000 more years before that estimate.
If there was water on Mars earlier than thought, this indicates that the water may have been a natural byproduct of some processes early in the planet’s formation.
This could help answer the question about the source of the water, which in turn could influence theories about the origins of life beyond Earth.
Scientists revealed in 2013 that NWA 7533 was 4.4 million years old, making it the oldest Martian meteorite in existence.
“Our NWA 7533 samples were subjected to four different types of spectroscopy and chemical fingerprint detection methods, and we found strong evidence of magma oxidation,” said study lead Professor Takashi Mikuchi at the University of Tokyo.
Igneous rocks, or crumbling rocks in a meteorite, are formed from magma and are usually caused by shock and oxidation. This oxidation can occur if there was water present on or in the crust of Mars 4.4 billion years ago.
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