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From fearless spacewalks to desperate returns to Earth, there are many thrilling stories about humanity's conquest of the universe. Here are a few space rescue stories...
<h1>The return capsule of the "acute sub"</h1>
In 1961, astronaut Gus Grisholm made a 15-minute suborbital flight when an unexpected thing happened when he returned to Earth. When Grisholm's return capsule splashed into the sea, waiting for the recovery helicopter to arrive, the return capsule door suddenly burst open in advance, and a large amount of seawater poured into the cabin. The Liberty Bell 7 return capsule began to sink, and Grisholm managed to escape from the capsule.
Astronaut Gus Grisholm
What's even more dangerous is that Grisholm forgot to close the oxygen port of the spacesuit, and as a result, a large amount of seawater poured into his spacesuit, and the heavy spacesuit slowly pulled him into the water. The pilot of the helicopter was unaware of the dangers facing Grisom, which led to Grisom almost drowning, but fortunately Grisom was eventually rescued, but he was exhausted.
<h1>"Disobedient" spacesuits</h1>
In 1965, astronaut Alexei Leonov performed a 12-minute spacewalk. Something very thrilling happened on his journey to space. After Leonov stepped out of the airlock module, the spacesuit he was wearing began to expand due to the pressure difference. When he finished the spacewalk, the bulging spacesuit made it very difficult for him to move. What's worse, when he returned to the airlock cabin, he found himself unable to squeeze in. Realizing that the situation was critical, Leonov ventured to release the oxygen from his spacesuit into space before squeezing back into the airlock module.
"Disobedient" spacesuits
<h1 class="ql-align-center" > "naughty" small screws</h1>
In 1993, seven astronauts carried the space telescope's modified optical component COSTAR for the first time on the Hubble Space Telescope.
The Hubble Space Telescope performed maintenance for the first time
While the astronauts were replacing some insulation materials, a small screw drifted away. It's no secret that even a small screw in space can cause catastrophe, and astronauts are worried about the impact on the new mirror of space telescopes, so they have to use the shuttle's robotic arm to capture it.
The small screws that drift away can adversely affect space telescopes
<h1>Helmet water leakage can not be underestimated</h1>
During a spacewalk, astronaut Luca Palmitano noticed something was wrong. He felt the water creep into his helmet, and it was getting more and more quickly, and he needed to get back to the airlock capsule right away.
Astronaut Luca Palmitano
Palmitano's vision became increasingly blurry as the water grew, and he tried to slowly move back into the airlock cabin, but by this time he was almost plunged into endless darkness.
The helmet seeps water
More and more water soon passed over his nose and eyes, and he could only judge the direction based on the light brought about 30 centimeters between the eyes and nose. Five minutes later, Palmitano used the recoil principle of the safety rope to take himself back to the station's hatch.
"Next, I felt Cassidy (another astronaut) shake my gloves and try to get my response, and I gave him a response and told him I was okay." Luckily, Palmitano returned safely to the space station. This thrilling event has made scientists pay more attention to the safety of astronaut equipment.
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