History and life style

  ROCKETS: Rockets carry satellites and people into space. A rocket burns fuel to produce a jet gas.the hot gas expands rapidly and is blasted downwards causing force to push the rocket up. Birth of the rocket: The first liquid fulled rocket was launched in 1962 by an american, Robert Goddard.it reached 12.5m(41 ft). the flight lasted 2.5 seconds. First in space: The first person in space was the Russian cosmonaut, Yuri Gagarin. he was sent up in Vostok 1 on April 12, 1961 for a 108-minute flight. Biggest and Best: The saturn V were the largest, and most powerful, rockets ever built. they were used 13 times, between 1968 and 1972, including for the first moon landing. Types of rockets: 1. Reusable space shuttles: carry people to and from the space station. 2. saturn V: the larget rocket ever built. they were used to launch all the moon              landings.  3. Fire work rockets: are used for celebrations 4. Military rockets: have been used ...

 What is space ? On a cloudless night,you can see thousands  of stars.space is the name we give to the huge empty areas in between the atmospheres of stars and planets,apart from the odd rocket,space is sprinkled only with dust and gas. Why space is so dark ? space is lack because there is nothing there to reflect light.from space, earth looks lit up because light from our sun reflects off sea,and land,and the particles in our atmosphere. How old is the universe ? experts believe that its just under 14 billion years old. Where does space begin ? earth is cloaked in thin layer of gases called atmosphere.outside this atmosphere is space, where there is no air to breathe, and where no body can hear you scream. Discovery of Telescope: people have looked at the night sky for thousands of years.this study is called astronomy. around 400 years ago, a special tool was invented to make the task easier this tool is called telescope. Before the telescope: people were shocked when polish ...