Can humans reproduce in the universe? Both the United States and Russia have conducted experiments in space breeding, and the results are somewhat unexpected.

Humans have always wanted to emigrate to outer space, so they have formulated the moon base plan and the Mars landing plan. If humans really emigrate to outer space, whether humans can reproduce normally in the universe is also a question that scientists should think about.

Due to the great difference between space and the earth's surface environment, the earth's surface is a gravity environment of 1G, while space is in a vacuum state. Astronauts who live and work in space must adapt to this state, because they must be in this microgravity environment for a long time.

In addition, on the International Space Station, the amount of radiation received by people is 100 times that of the earth. As the most sensitive part of the body, the lower body organs bear the brunt. Radiation can cause serious reproductive problems of sperm.

The microgravity environment of the universe is a very good experimental environment, such as running a high-performance cold atomic clock in microgravity environment, cultivating embryonic stem cells, and studying crystal growth, which are all difficult tasks to complete on earth.

But for human beings, microgravity is not a good living environment. Zero gravity in space may also lead to the loss of calcium in bones, slow heartbeat, decreased muscle strength and decreased red blood cells.

Under these factors, the United States and Russia began human space mating experiments. The purpose of this experiment is to independently study how human beings have lived in space for several years, and to test whether human beings have the ability to overcome the influence of microgravity and solve the physiological needs of astronauts who have been performing tasks in space for a long time.

In 2000, during the eight-month ground simulation training of the space station in Russia, two Russian astronauts fought because of unbearable mental pressure. Later, another Russian male astronaut forced his colleague, a Canadian female astronaut? Ask for relatives? . In order to avoid trouble, the Russian space department subsequently ordered the installation of door locks between the capsules of domestic and foreign astronauts at all training bases.

1994, Japanese researchers took four adult giant fish to the space shuttle and cruised in space for 15 days. During this period, medaka mated in space and successfully hatched eight small fish, and then their third generation also gave birth as usual. This is considered to prove that the microgravity environment has little effect on the germ cells of vertebrate fish.

1995, American scientists conducted a pregnancy experiment on a space mouse. It was found that newborn mice had abnormal reaction, and their gravity-sensing stimulation was problematic, so they could not turn over on their own (newborn mice on the earth could turn over).

After the male mice flying in space mated with the female mice on the earth, their offspring developed slowly, resulting in hydrocephalus and renal abnormalities.

In 200 1 year, the United States found an astronaut couple to complete this experiment, but it is really difficult for them to mate in space.