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Rockets. A rocket works by expelling a gas out of the rear and pushing the rocket into the opposite direction. In a rocket fuel is burned to create a hot gas that is forced out of the back of the rocket. . Rockets .
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Rockets • A rocket works by expelling a gas out of the rear and pushing the rocket into the opposite direction. • In a rocket fuel is burned to create a hot gas that is forced out of the back of the rocket.
Rockets • The Chinese first launched rockets around the year 1000. These rockets used black powder • In 1920 the American scientist Robert Goddard used liquid fuels which burned longer and more continuously • In 1903 Russian named Konstantin Tsiolkovsky came up with the idea of multistage rockets.
Satellites • A satellite is any natural or artificial object that revolves around an object in space, just as the moon revolves around Earth • The first satellite was launched by the Soviet Union (Russia) on October 4, 1957. • This satellite was named Sputnik 1 • The United States then launched it’s first satellite Explorer 1 on Feb 1, 1958
Satellites • Satellites and space stations are used for communications, navigation, collecting weather data, and research. • Some satellites are in geosynchronous orbits, which means they revolve around Earth at the same rate that Earth rotates. • Space stations are large satellites that humans can live in for long periods of times
Space Stations • The first space station, the Soviet Union’s Salyut, was launched in 1971 • In 1973, the United States launched Skylab, which carried a series of telescopes and scientific experiments. • Today 16 countries including Russia and the US are using the International Space Station for a variety of scientific missions
1st person in space • On April 12, 1961, Yuri Gagarin, a Soviet cosmonaut, orbited Earth, becoming the first person in space. • On July 20, 1969, Apollo 11 astronaut Neil Armstrong became the first person to walk on the moon. • When Armstrong first set foot on the moon, he said, “That’s one small step for man, one giant leap for mankind
The space shuttle • In the late 1970s, the National Aeronautics and Space Administration (NASA) developed the reusable space shuttles. • They are called shuttles because they can go back and forth, or shuttle, between Earth and space. • Since the first shuttle was launched in 1981, space shuttles have been the main way that the United States launches astronauts and equipment into space
Hubble space telescope • In 1988 the US launched the Hubble telescope into orbit. • It has sent back thousand of high quality pictures of stars, planets and galaxies • A space probe is a ship with scientific instruments that is launched to explore objects in our solar system • Many space probes become satellites when they orbit planets, moons or other objects in space