Take the moon as a shield to detect the "Dark Age" of the Universe

Since 2007, my country has implemented the Chang'e lunar exploration project in accordance with the established plan in accordance with the established plan. The country in the soil. However, my country's lunar exploration tasks are far from over. In our related medium and long -term planning, it has been determined that until around 2030, the implementation of the moon landing plan, and then the permanent research base of the building on the moon.

Recently, a project hosted by the Chinese Academy of Sciences has received widespread attention from the world, that is, the "Month Shield Program" in the "New Field Plan". The "New Vision Program" includes many tasks about astronomy, geoscience, solar physics, astronomical exploration, and external planet research. "Dark Age".

As we all know, the universe comes from a strange big explosion in 13.8 billion years ago. However, after a long time after the Big Bang, the universe is still in a chaos and darkness. Later, what caused the universe to eventually get rid of the darkness and light up the first star, thus the topic of the universe ushered in It has long been very interested and focused on scientists.

Due to the neutral hydrogen emitted by the "Dawn Age" in the universe, it may produce an absorption line with a wavelength of 21 cm. This is like the morning glow before dawn. We can observe and find the universe "dawn" through the long wave of radio power. This feature. In recent decades, scientists from the United States, Australia and other countries have carried out many astronomical observations and in -depth research on the ground through the radio telescope, but there are relatively obvious differences between the results of the research, which shows that related experiments are majority. The part of the part was not exact, and scientists were generally controversial.

The reason is the limit of observation. Although the radio telescope is an important means to study the cosmic stars and planets, the objects of the research, especially the stars and planets outside the system, are very far away from the earth, and the electromagnetic signals that occur are very weak. In addition, the earth is shrouded in a strong layer of atmosphere. Due to the ionization layer of the atmosphere and the electromagnetic interference caused by the daily life of human beings, it will have a great impact on the observation of the radio telescope.

To solve this problem, the best way to observe is to find a very "quiet" area, and observation in space is the only choice. Activity interference.

To receive a weak signal before the universe "dawn", if you go far away from the earth, even break through the restraint of the solar system, come to areas with unusual distribution of stars and planets. Of course, it is the most ideal destination. In terms of restrictions, we cannot send large detectors to the area outside the solar system. Even at the edge of the solar system, it is not realistic. On the one hand, it is too difficult. There will be obstacles in the second communication transmission, and the third cost is too high.

For the current astronomer, the surroundings of the moon are a good choice, especially the back area of ​​the moon, which is a rare "tranquility" place. If the moon uses the moon as a "shield", then it can block all kinds of radio signal interference from the earth, but also monitor the electromagnetic signals that cannot be distinguished on the ground and near -ground tracks, so that in -depth research on the origin of stars, galaxies, galaxies can be thoroughly studied. Evolution provides important observation materials, and can provide effective information for scientists to glimpse the "Dark Age" of the universe and the evolution of the "dawn era".

Based on the above reasons, my country began relevant basic preparations as early as 2018. While launching the "Qiaoqiao" relay satellite in the moon, two ultra -long -wave astronomical observations of microfinance, namely Longjiang No. 1 and Longjiang Longjiang No. 2, they set up the moon to fly around the moon, laying the foundation for exploring the "dawn era" of the universe.

The "Month Shield Project" proposed by the Chinese Academy of Sciences this time is mainly to use a few years to launch 10 satellites to the moon to build a satellite formation with a main star and auxiliary star. The moon fly. When flying to the back of the moon, you can block the interference information from the earth, then conduct observations, and receive information from the dark space from the universe. When the front of the moon is turned, the receiving information will be transmitted back to the ground, and the information is interpreted and studied through the ground control center.

my country's "Monthly Shield Project" not only has obvious advantages over the ground radio telescope, but also has challenging than the moon meter construction on the back of the moon. The "Dark Age" observation plan for innovation is undoubtedly significant of epoch -making.

Source: Cosmic Decoding

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