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Newton’s Third Law Of Motion, which states that every action has an equal and opposite reaction is the heart of rocket science.
The basics of rocket science are not that complicated, only involving getting the moving force that overcomes the pull of gravity, in a calculated and controlled manner.
The thrust required for an object to overcome Earth’s gravity and atmospheric resistance and move towards space is called escape velocity. Besides Earth, the gravitational forces that can affect the object are those coming from the sun, moon and even other planets.
Apart from space vehicles and the military, rockets are used in life-saving rescue flares and fireworks, and even the ejector seats in military planes.
Many rockets have multiple ‘shell’s that fall off during escape velocity and is due to the empty fuel containers that are discarded to save on mass, after their fuel has been utilized.
Landing back on earth is trickier than landing on surfaces with no atmosphere or less gravity, and rockets use air resistance, wings and parachutes to slow down the reentry fall.
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A few months after their mission ended, the European Space Agency announced that it would send two CubeSats on its "Hera" mission to a binary system.
Asteroids are what's left after the formation of our solar system from billions of years ago.
It is believed that the reason why they were formed were because of the birth of Jupiter. Its birth hindered any planetary bodies to form in the space between Mars and Jupiter, which resulted to the small objects that were present to crash onto each other and fragment themselves.
The two theories that back this up are the Nice model and the Grand Tack.
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The International Space Center circles the globe every 90 minutes at a speed of 17,500 mph. It flies at an altitude of 248 miles above Earth.
It holds a crew of three to six people, and for a long time, used the Russian Soyuz spacecraft as a way to transport astronauts. SpaceX has sent 2 more astronauts in May 2020, using their Special Dragon Spacecraft, courtesy Elon Musk.
Astronauts mainly perform experiments and do maintenance at the ISS. They also do some personal care and exercise, reach out to Earth to conduct some media or school events, and occasionally perform spacewalks. They also use a bit of Twitter.
Human health research, especially eye problems are a major activity. Biological activities, animal tests and testing of appliances in space is also done.