This article is from the official account:Gezhi Lundao Forum (ID: SELFtalks) , author: Ouyang Ziyuan, academician of Chinese Academy of Sciences, geochemistry and celestialChemist, the title picture comes from: Visual China
At 12:41 on July 23, 2020, China’s first Mars exploration mission “Tianwen-1” probe was successfully launched by the Long March 5 Yaosi carrier rocket at the Wenchang Space Launch Site on the northeast coast of Hainan Island. .
Humans have conducted 47 Mars explorations. It is much harder to detect Mars than the moon. As China’s first independent Mars exploration mission, what scientific goals will “Tianwen-1” accomplish? There are a total of 13 mysterious boxes on “Tianwen No. 1”, which undertake different tasks. How do they “show their magical powers”? Ouyang Ziyuan, an astrochemistry and geochemist and academician of the Chinese Academy of Sciences, leads us to explore the mysterious Mars. The following is the text.
The topic I shared with you today is “Tianwen 1, China’s first autonomous Mars exploration”. The content to be shared includes the following five aspects. I also want to introduce to you the Mars rover launched by my country.
The unjust injustice suffered by Mars
People have not had a good impression of Mars since ancient times. Almost every nation has cursed Mars. It has no good reputation in history and has always been considered an inauspicious star. Because Mars is red, it represents blood, war, death and plague.
But it really suffered an injustice.
Later, I thought of a way. Can I study the rocks falling from Mars-Martian meteorites? Can I combine them with methane to see if there are any discoveries?
Because methane can be produced without life in nature, it can be synthesized naturally or under high temperature. Of course, there is also methane excreted by organisms.
It is completely possible to distinguish the last formed methane on the instrument, but there is no way to do it now.
Humans got about forty or fifty rocks that fell on the earth from Mars, so we are going to observe the inside of meteorites with electron microscope in the next step.
In 1984, a meteorite was found in Antarctica, and many small bugs were found in it. Is this a bacteria?
The Americans said it was bacteria, and European scientists said it was pollution. Even today, there is still no result.
The picture below is a cross section of these bacteria.
In addition, many strange shapes have been found in Martian meteorites. For example, are the things like fried doughnuts in the picture also bacteria? We also have no answers.
In addition, China has found more than 12,400 rocks falling from the sky in Antarctica.
Two of them were dropped from Mars. Chinese scientists also went to study whether there was any information about life in them, and finally proved that there was no information.
But Chinese scientists did anotherp style=”text-align:center”>
Our exploration has about six scientific goals.
First, seven instruments are placed on the Mars satellites, mainly to detect the topography, rock distribution, and climate change of the entire Mars. In short, this is a global probe.
In addition, six scientific instruments are installed on our Mars rover to detect the distribution of soil under the surface of Mars, the composition of the soil, and whether there is distribution of groundwater underneath.
Our satellites are detecting in the sky, and the rover is also detecting the distribution of groundwater on the ground, jointly detecting.
There is also a weather station on the rover, which detects and records climate changes on Mars.
There are a total of 13 instruments for comprehensive exploration of Mars, and they are responsible for different tasks.
This is China’s first autonomous exploration of Mars. In a few years, at least before 2030, China will land on Mars and return samples on Mars.
On the Road Gezhi forum (ID: SELFtalks) , Author: Ouyang