What is the main idea of what is a spacewalk
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Any time an astronaut gets out of a vehicle while in space, it is called a spacewalk. A spacewalk is also called an EVA. EVA stands for extravehicular activity.
The first person to go on a spacewalk was Alexei Leonov. He was from Russia. The first spacewalk was on March 18, 1965. It was 10 minutes long.Astronauts go on spacewalks for many reasons.
Spacewalks let astronauts work outside their spacecraft while still in space. Astronauts can do science experiments on a spacewalk. Experiments can be placed on the outside of a spacecraft. This lets scientists learn how being in space affects different things.
Spacewalks also let astronauts test new equipment. They can repair satellites or spacecraft that are in space. By going on spacewalks, astronauts can fix things instead of bringing them back to Earth to fix.
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Explanation:
Space Walk .
An astronaut spacewalk is a dangerous extra vehicular activity which requires astronauts to exit the relative safety of their spacecraft (space station or space shuttle) to perform work on its exterior. The process adheres to strict safety procedures, requires extensive safety equipment, and is only performed when a space agency determines it is absolutely necessary.
In an astronaut spacewalk, also known as an Extra Vehicular Activity (EVA), an astronaut literally walks in space, exiting the relative safety of the international space station in order to perform exterior repairs on things like a solar panel. Spacewalks are dangerous, physically demanding, and rare.
The process of doing a spacewalk is not just physically challenging due to the pressurized resistance of the suit, it is also mentally demanding—astronauts have to focus on the work they are doing as well as their safety, a vast number of potential tools, interacting with the crew and with the team down in mission control, all while the clock is ticking.
American, Russian, and European, and Canadian astronauts such as Chris Hadfield and David Saint-Jacques have all performed spacewalks. Recently, female astronauts Anne McClain and Cristina Koch completed their first spacewalks, though the opportunity for the first American all female spacewalk was missed because of issues with spacesuit sizes, meaning NASA Astronaut Anne McClain walked with astronaut Nick Hauge.
Why Do Astronauts Perform Spacewalks? Main Idea.
Spacewalking is dangerous and only performed when a job requires the skill and dexterity of a human—something that can’t be done by a robot.
The vast majority of astronauts’ work is done inside the relatively safe environment of the spaceship, and they use robotic arms like Canadarm2 to remotely do work outside in the harsh thermal vacuum. Occasionally, though, external work needs to be done that requires direct human judgment or dexterity. When the need outweighs the risk, a spacewalk is planned.