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Videotranskription
Feeling way down Feeling the constant poll to the Earth we all. It's gravity and it's a part of every single thing we do, including our science, but what if we're 250 miles above Earth aboard the International Space Station, a laboratory like no other that offers something we can't get on our home planet. My name is Doctor Serena on and Chancellor Nasa astronaut I recently flew to the International Space Station aboard Expedition 50 -, six and 50 - Seven. My relationship with micro Gravity is that I got to live in microgravity for A hundred and 90 - seven days when I was on orbit, so many people ask what is micro gravity. Why do you float on board? the International Space Station Gravity acts upon all objects were never truly in zero gravity on board the space station, but because the space station is traveling so fast Actually in a constant free fall, and that's why everything and everybody appears to float on board the space station. we are experiencing the Earth's gravity. In fact, we're actually experiencing about 90 percent of what you will experience on the surface of the Earth. The differences were just moving so fast that as we fall, we actually fall around the Earth and that defines orbit. so microgravity means we're not you know. It's not the absence of Mass, which, of course creates gravity, but all the. Together are in the same gravitational field at all falling together, so yes, it is a lot of fun floating around of course, is one of the exciting parts of being up here on board and being an astronaut. But even more importantly, it lends itself to all the amazing experiments that we can do on board to take advantage of that microgravity environment to do things that we can't do on Earth but they can benefit a life back on Earth. The important thing is so different than what we have here on the ground where everything is pulled by the Earth at what we. One force of gravity and what that does is it allows you to see the small forces the small processes small effects of what goes on in life, cell development or technical processes like combustion or fluid flow, and it helps you understand things that you may not have fully understood on Earth where you see something happening, something assembling or disassembling or the shape of something now going into three dimensions and you learn. That's really what was driving this thing on Earth that we didn't really understand on Earth. Gravity is affecting all research. we do and sometimes that can get in the way of studying things in different environments can give a better picture of how they work from diseases to fires and even things that make up products like milk or shampoo. One of the main things we perform on the IRS is science. In fact, probably 70 to 80 percent of our day is performing scientific experiments. The Space Station is a great place to do research for several perspectives. One of those is it's a big huge satellite orbiting the Earth. So if you have an instrument that wants to look at the Earth or look out at space, We provide the power we provide the data the platform for it. You don't have to go. do your own new satellite. The outside of the IRS is also a very extreme environment and sometimes you learn things by exposing your hardware your your polymers or whatever to a different environment. You'll see something happen different than what is. Earth but probably one of the most pervasive uses of the IRS is just the microgravity environment. the things that we do inside the IRS to be able to do your experiment in space without gravity, which we've all lived with forever here on the ground, which we live with every day and we don't even realize how it governs so many things that happen around us. If you take gravity away now some of the small phenomenon some of the small processes and forces start to come out and you can see them and you can see. The behaviors of their experiment happening differently in space and in microgravity than you would on the ground. It takes a lot of people to make all of that microgravity science happen. 4000 scientists companies and students from over 100 countries have sent more than 2700 experiments to the orbiting laboratory over the past 20 years. These studies have unlocked new discoveries and even kicked off hundreds of new microgravity experiments. We're study. The physiology of how blood flow and our the fluids in our body shift as the result of microgravity yesterday, I spent some time setting up a veggie experiment will actually be growing Missoula lettuce up here Drew and I actually been helping start a new experiment called the Cold Adam Lab, which will create one of the coldest places in the universe right here on the space station almost an absolute zero. but who are these scientists and how do they get their research to the space station this season? We'll take. Behind the scenes of the years of preparing an experiment for space, you'll see a launch off the planet and splash back down in the ocean and hear what it's like to hand off your research to the astronauts who serve as the eyes and hands of the scientists aboard the International Space Station. This is our first project that is going up to the station and our first project working with anyone involved in the space program. So it's a very exciting time for us. It will be interesting to see how all of our planning is played out when someone else has the experiment in their hands.
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