Can people live on other planets?

A few years ago, two' Mars landers' (Opportunity and Spirit) were launched. They found in some areas that there is no life (including bacteria) on Mars. However, some scholars believe that there is no life on Mars (or there was life once).

However, until now, many scholars thought that there was water and even life on Mars at least before that.

For example:

Weiler, deputy director of NASA's project, said that the place where Opportunity landed "used to be a good living environment for a while". He said at the news conference that the "Opportunity" rover has been studying this "once water-rich" Mars landing zone. But experts say no signs of organic biological activity have been found.

Squyres, the chief scientist of the Mars exploration mission, stressed that there has been no sign of life on Mars. But he said that Opportunity's research on rocky areas showed that liquid water once existed on Mars. He said: "Our conclusion is that these rocks have been soaked in water. There is conclusive evidence that water has an impact on the formation of these rocks. "

Since June+10, 5438, two American rovers have landed on Mars, and they have been searching for traces of life on Mars. Experts say that Opportunity has found evidence of the main purpose of Mars exploration, that is, there was liquid water on Mars. According to the data analysis of rock formations and other ores detected by the rover, scientists found that some rock formations in the area where the rover was located showed signs of being soaked by water. These findings support the conclusion that when these rock formations were formed, the environment of Mars at that time might be suitable for the existence and reproduction of organic organisms.

According to Agence France-Presse, Washington, 26th, NASA scientists published a research report today, saying that in-depth study of meteorites from Mars shows that life did exist on Mars.

American scientists once found chain-like molecules on a meteorite from Mars, presumably left by Martian creatures. Friedman, a scientist at NASA's Eimers Research Center, said that they further analyzed the chain compounds on this meteorite and confirmed that it came from living things.

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