See experiments done by astronauts regarding physical tests
Have you ever wondered how it is possible to determine the mass of anything in an environment where gravity does not exist? After all, scales and the weight they measure depend on and are based on this invisible force.
So, to answer this question, astronaut Don Petit decided to make a video — in English, and with slightly messy subtitles — in which he demonstrates with an experiment how it is possible to determine the mass of an object in environments where weight is not can be measured with the instruments we use here on Earth.
O ithe start of training
After going through the selection stage, the real fun begins. Well, more or less: before even considering going to space, the astronaut candidate – which in English is known as “AsCan”, short for Astronaut Candidate – needs to undergo training that lasts at least two years.
And starting the training also requires prior dedication: the candidate needs to undergo military preparation for survival in water and have a diver certificate before starting the NASA course.
All this because, in the first month of training, the AsCan must pass a swimming test that will require a lot of effort, such as being able to swim three times the length of a 25-meter pool without stopping and then repeat the feat wearing spacesuit and sneakers. During the training, the candidate also learns the procedures necessary to handle the software and equipment operating the Space Shuttle and the International Space Station.nício do treinamento
Microgravity simulation on Earth
Part of the training for astronauts concerns exposing candidates to high and low atmospheric pressure environments and also learning how to deal with emergency situations associated with these conditions. But there is also a need to adapt the candidate to the reduced gravity environment, and obviously this needs to be done on Earth, since going to space is the ultimate goal of training.
Therefore, much of the training is done on virtual reality devices, with a helmet and many wires connected to the candidate's body, who undergo the simulated experience of an extravehicular mission. The cables attached to the AsCan are part of a robotic device that adds more realism to the task, making the person also feel the mass and inertia of the objects manipulated during the simulation.
And there's still a third way to simulate microgravity environments on Earth: going underwater. That's why NASA maintains the Neutral Buoyancy Laboratory, facilities that have, among other wonders, a huge pool with life-size replicas of modules from the International Space Station, being the ideal environment for astronauts to do their extravehicular activities training.
The laboratory tank is 62 meters long, 31 meters deep and 12.3 m wide. It holds 23.5 million liters of water that is continuously recycled and filtered and with controlled temperature. As if that wasn't enough, special systems can bring audio and video to the submerged candidate and the laboratory also has a pressure control system and, of course, emergency and rescue teams in case of accidents.
Unfortunately, this simulation has one drawback: the resistance of water during the movement of the astronaut and objects. This feature is lacking on the vomit comet, but at least the microgravity simulation in the Neutral Buoyancy Lab lasts longer than 25 seconds.
In another step, candidates also pass through the “Vomit Comet”, a NASA aircraft
On the other page, see how to make toys from recycled material such as spaceships, rockets and astronaut clothes for children.
This experience was when I went to sleep in the room at home not for haunted people I felt floating I felt that I was floating and I was not on the bed I was sleeping the other experience was different this one made me feel that floating throughout the house and on the fridge I felt like I was floating a lot looking like it would go through the roof of the house. Feeling better and waking up talking to Sam than sleeping in the other room not screaming.Husband, being afraid of what I said is not an invention of the head


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