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What is the biggest myth of space? Appeared on Quora: the place to acquire and share Knowledge, empowering people to learn Answered by Robert Frost, Instructor and Flight Controller at NASA, on Quora:
What's the Biggest Myth on Space? Qu & There is no gravity in space People do not quite understand what is weightlessness, they see astronauts floating inside and on the outside of a spaceship and come to the conclusion that there is no gravity
. is the curvature of space-time due to the mbad presence The gravitational influence of the Sun that keeps the Earth in orbit around the Sun is felt in the same way by astronauts in the space.The gravitational influence of the Sun re which keeps the Moon and the ISS terrestrial Orb it is also felt by astronauts floating inside and outside the spacecraft. If these influences were not felt, the astronauts would not stay in orbit.
At the altitude that the ISS astronauts inhabit, the gravitational influence of the Earth is 8.75 m / s ^ 2. It's only about 11% of less than the 9.81 m / s ^ 2 felt by you and me on the surface of the Earth.
They are light and seem to float because they are in free fall. A Earth-orbiting spacecraft is falling towards the Earth (because of gravity) but also ahead at a speed high enough that the path traveled is not straight, but rather a curve that surrounds the Earth. [1] and so is their spaceship. If both fall, there is no force against each other and therefore no feeling of weight. We can emulate this free fall here on Earth, in a large room that is pumped to suck.
Let's have a thought experiment.
Imagine an astronaut on Earth standing on a scale. The scale indicates weight because gravity attracts the astronaut to the center of the Earth, but the Earth is not willing to spread it. Weight is the perception of the Earth that does not stray from the path.
Imagine now this same astronaut in space, orbiting the Earth. He has the same ladder, and he is standing on it. Will it show weight? No, it will not show weight because the astronaut and the ladder fall together and that there is no contact with the Earth to allow the Earth to grow back.
The ISS and its crew are in free fall. They are falling towards the center of the Earth but as they move so fast, from the side, they do not miss the Earth. As there is no land surface to push back against the ISS or its crew, there is weightlessness.
A celestial diver would experience the same thing if it 's not for the air resistance below them
Robert Frost' s answer to If the gravity of the Sun constantly attracts the planets towards it, why was not the Earth drawn into the Sun?
This question appeared on Quora – the place to acquire and share knowledge. to learn from others and to better understand the world. You can follow Quora on Twitter Facebook and Google+. Additional questions:
- International Space Station: If you put the ISS in rotation, in a static position, will that create gravity for the crew?
- Earth: Does the rotation of the Earth cause the seasons?
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What is the biggest myth of space? Originally appeared on Quora: the place to acquire and share knowledge, empower people to to learn from others and to better understand the world
Answer by Robert Frost, flight instructor and flight controller at NASA, about Quora:
What is the biggest myth of space? Qu & # There is no gravity in space They see astronauts floating inside and outside a spacecraft and arriving to the conclusion that there is no gravity.
Wherever mbad and space exist, gravity is the curvature of the space-time mbad presence. The fluence of the Sun that keeps the Earth in orbit around the Sun is also felt by astronauts in space.The gravitational influence of the Earth that keeps the Moon and the ISS in orbit Earthly is also felt by astronauts who float in and out of the spacecraft. If these influences were not felt, the astronauts would not stay in orbit.
At the altitude that the ISS astronauts inhabit, the gravitational influence of the Earth is 8.75 m / s ^ 2. It's only about 11% of less than the 9.81 m / s ^ 2 felt by you and me on the surface of the Earth.
They are weightless and seem to float because they are in free fall. A Earth-orbiting spacecraft is falling towards the Earth (because of gravity) but also ahead at a speed high enough that the path traveled is not straight, but rather a curve that surrounds the Earth. [1] and so is their spaceship. If both fall, there is no force against each other and therefore no feeling of weight. We can emulate this free fall here on Earth, in a large room that is pumped to suck.
Let's have a thought experiment.
Imagine an astronaut on Earth standing on a scale. The scale indicates weight because gravity attracts the astronaut to the center of the Earth, but the Earth is not willing to spread it. Weight is the perception of the Earth that does not stray from the path.
Imagine now this same astronaut in space, orbiting the Earth. He has the same ladder, and he is standing on it. Will it show weight? No, it will not show weight because the astronaut and the ladder fall together and that there is no contact with the Earth to allow the Earth to grow back.
The ISS and its crew are in free fall. They are falling towards the center of the Earth but as they move so fast, from the side, they do not miss the Earth. As there is no land surface to push back against the ISS or its crew, there is weightlessness.
A celestial diver would experience the same thing if it 's not for the air resistance below them
Robert Frost' s answer to If the gravity of the Sun constantly attracts the planets towards it, why was not the Earth drawn into the Sun?
This question appeared on Quora – the place to acquire and share knowledge. to learn from others and to better understand the world. You can follow Quora on Twitter Facebook and Google+. More questions:
