Astronauts Sunita Williams and Butch Wilmore from the US space agency NASA are still stranded in space. According to the information, their return is possible only by next year. The US space agency NASA said that the return of astronauts is not possible this year. But do you know that when an astronaut goes to space from here, a rocket is launched, but when he has to come back to earth, how does he come without a rocket? Today we will tell you about it.
Astronaut
Let us tell you that Sunita Williams and Butch Wilmore reached the space station in June 2024 on a Boeing plane. Their return was postponed due to a malfunction in the Boeing Starliner capsule. At the same time, NASA chief Bill Nelson says that both the astronauts will now have to return to Earth aboard SpaceX’s rocket. He told that the propulsion systems of the Starliner are faulty, so it is very risky for the astronauts to return to Earth by this vehicle.
How do astronauts return from space?
First of all, let us know where in India rockets are launched for space. There are two launch pads in India to launch spacecraft. The first is Thumba Equatorial Rocket Launch Station in Thiruvananthapuram, Kerala and the second is Satish Dhawan Space Center, which is located in Sriharikota, Andhra Pradesh.
Let us tell you that there is no space center or spacecraft launcher on the moon. The whole team prepares to launch the spacecraft. First it is assembled with the rocket, then it is launched from the launching pad. Now the question is how does the rocket return from the moon to Earth. Let us tell you that any object can go from Earth to space only when it is able to cross the Earth’s gravitational field. According to the laws of science, any object can cross the Earth’s gravity only when its minimum velocity is 11.2 kilometers per second. That is why the spacecraft is launched from the launch pad, so that it can successfully leave the Earth’s orbit and enter space.
Journey from the moon to the earth
There are many space centers to send spacecraft from Earth to the moon, but a space center has not yet been built on the moon. The spacecraft returns back to Earth easily. If you think that it is like jumping from the roof to the ground, then you are wrong. Because nature’s natural technology helps in this. This whole game is based on escape velocity. The escape velocity of the Earth is 11.2 kilometers per second, while the escape velocity of the moon is only 2.4 kilometers per second. The engine present in the spacecraft is so powerful that it can easily take the spacecraft to a speed of 2.4 kilometers per second and helps the spacecraft to return to Earth easily.
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