Mars data

Mars, one of the eight planets in the solar system, is the fourth planet in the solar system from the inside out, belonging to a terrestrial planet, with a diameter of about 53% and a mass of 14% of the earth. Due to the axial tilt, the rotation period is similar to that of the earth, and one circle is about twice that of the earth.

The orange appearance is the surface hematite (iron oxide). In ancient books in China, Mars was called "the twinkling star", while in ancient western countries (ancient Rome) it was called "the mythical star of Mars". It is the only guardian star of Aries in the twelve constellations, not the guardian planet of Scorpio.

Mars is basically a desert planet, its surface is covered with sand dunes and gravel, and there is no stable liquid water body (2065438+September 28th, 2005, NASA announced that there is a small amount of water on Mars.

According to Agence France-Presse reported on July 25th, 20 18, researchers from the European Space Agency (ESA) said that the first liquid groundwater lake was discovered on Mars. The atmosphere dominated by carbon dioxide is thin and cold, and dust is suspended in it, and dust storms often occur every year. The polar caps composed of water ice and dry ice at the poles of Mars will fluctuate with the seasons.

Extended data

According to the US Newsweek website reported on August 5, 2065438+09, American scientists said that the research on mice living in a simulated deep space environment showed that sending humans to Mars may bring cognitive and memory problems to astronauts, making them unable to cope with emergencies well.

Researchers from the University of California, Irvine and Stanford University exposed experimental mice to low-dose neutron and photon radiation for six months. They set the dose at 18 mgory, and the radiation dose increased at the rate of 1 mgory/day during the study.

The results show that this radiation seems to change the working mode of neurons in hippocampus, which are mainly responsible for the storage, transformation and orientation of long-term memory, as well as nerve impulses in neural pathways in hippocampus and cortex. More importantly, behavioral tests show that these mice have problems in learning and memory, and they seem to be more painful and anxious.

The research team believes that the "behavioral defect spectrum" they saw in mice will obviously damage the ability of astronauts, making them unable to respond quickly, appropriately and effectively to emergencies during the mission to mars process.

The researchers explained that it was difficult to copy and study the effects of deep space radiation before, but now they use new neutron irradiation equipment to simulate real low-dose radiation in deep space. "In the long run, the nature of the space radiation environment will not prevent us from going to Mars, but it may be the biggest obstacle that human beings must remove to go beyond the Earth's orbit and go deeper into the deep space."

People's Network-Humans may become stupid on Mars.

Baidu Encyclopedia-Mars