Shulou(Shulou.com)11/24 Report--

CTOnews.com, December 29 (Xinhua) recently, the National Aeronautics and Space Administration (NASA) perseverance rover has continuously dropped Martian rock sample tubes on the surface of Mars as a backup for the Mars sample return program.

CTOnews.com learned that the rover collected two samples at each drilling site, one of which was kept in the rover and the other on the surface of Mars as a backup. If perseverance's power lasts long enough, the samples it carries can be delivered to a future lander and then sent back to Earth.

According to the Mars sample return plan, the rover will deliver samples to future robot landers. But if the rover cannot deliver the sample, then the sample bank on Mars will be used as a backup, and the delivery will be done by two sample recovery helicopters.

It is reported that NASA plans to put a total of 10 sealed sample tubes on Mars to build the first human sample bank on another planet. Yili has already launched two sample tubes on December 21 and 24, respectively.

Given that NASA will not bring the Martian sample back to Earth until 2033, many netizens wonder whether the Martian wind will blow away the sample tube. Will Martian dust bury the sample tube? In response, the perseverance Mars rover team explained that Mars does have wind, but unlike Earth's wind, Martian wind is largely limited to blowing up small grains of sand. "the atmospheric density of Mars is about 1% of that of Earth." the wind here can speed up, but it doesn't take a lot of things away. " From a practical point of view, wind is not a threat to nuclear-powered missions such as perseverance. For example, NASA's Curiosity probe is still operating on Mars after 10 years on Earth, with only a thin layer of dust covering the machine.

In addition, the team recorded the exact location of the sample tubes. "it shouldn't be a problem to find them later."

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