Many people have sacrificed their lives to quench the thirst for knowledge and to satisfy his curiosity to gain knowledge.
In the olden days people used to worship sun and moon thinking them sacred heavenly bodies. But the scientific investigation had proved that sun is an ordinary star and moon is a planet like other planets. After this the man has entered the age of the space travel.
The invention of rocket was the first step in space travel. Scientists had already discovered that there was neither air nor water on the moon. The moon was the first target of the man. The moon is our nearest neighbour.
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It is about 300000 kms from the earth. A space ship travelling at a speed of 4000 kms. per hour can cover this distance in 10 hours.
The scientists had further discovered that the surface of moon is rough and full of craters, rocks and mountains.
America was the first country in the world whose astronauts landed first on the moon. Scientists now are trying to find out if there is life on Mars or not and they are planning to conquer it also.
Many centuries after that space travel can be taken as an excursion tour by the rich people of the world who can afford a huge amount for their will.
A few hundred years ago, traveling over the Earthâs surface was a risky adventure. Early explorers who set out to explore the New World went by boat, enduring fierce storms, disease and hunger, to reach their destinations. Today, astronauts exploring space face similar challenges.
All About Space Travel: One space shuttle launch costs $450 million
Space travel has become much safer as scientists have overcome potential problems, but itâs still dangerous. Itâs also very expensive. In order for a space shuttle to break free of Earthâs gravity, it has to travel at a speed of 15,000 miles per hour. Space shuttles need 1.9 million liters of fuel just to launch into space. Thatâs enough fuel to fill up 42,000 cars! Combine the high speed, heat and fuel needed for launching and youâve got a very potentially dangerous situation.
In 1949, Albert II, a Rhesus monkey went to space. Keep reading to find out more all about space travel.
Re-entering the atmosphere is dangerous too. When a space craft re-enters the atmosphere, it is moving very fast. As it moves through the air, friction causes it to heat up to a temperature of 2,691 degrees. The first spacecrafts were destroyed during re-entry. Todayâs space shuttles have special ceramic tiles that help absorb some of the heat, keeping the astronauts safe during re-entry.
In 1957, the Russian space dog, Laika, orbited the Earth.
Fun Facts about Space Travel for Kids
- One space shuttle launch costs $450 million.
- The German V2 was the first rocket to reach space in 1942.
- In 1947, fruit flies were launched into space. Scientists wanted to see how they reacted to space travel. Later, in 1949, Albert II, a Rhesus monkey went to space. In 1957, the Russian space dog, Laika, orbited the Earth. Scientists wanted to make sure space travel was safe for humans. Sending animals first gave them valuable information about how bodies react to being in space.
In 1959, the Russian space craft, Luna 2, landed on the moon. It crashed at high speed.
- In 1959, the Russian space craft, Luna 2, landed on the moon. It crashed at high speed. Fortunately, it was an unmanned craft with no astronauts inside.
- Russian astronaut, Yuri Gagarin, was the first human in space. He orbited the Earth in 1961.
Russian astronaut, Yuri Gagarin, was the first human in space. He orbited the Earth in 1961.
- In 1963, the first woman, Valentina Tereshkova, entered space.
- The first U.S. spacecraft landed on the moon in 1966.
- On July 20, 1969, Neil Armstrong and Buzz Aldrin became the first men to walk on the moon and return home safely â a journey of 250,000 miles.
- In 1970, Apollo 13 was headed to the moon when an explosion on board caused serious problems. The astronauts fixed the problems with materials they had on hand and returned home safely.
- US astronauts returned to the moon three more times in 1971.
- 1981 marked the first space shuttle that could be used again. Six shuttles have been built since then.
- In 1986, Space Shuttle Challenger exploded shortly after launch, killing all seven astronauts onboard, including school teacher, Christa McAuliffe.
- Since 2000, permanent crews have been living and working in space at the International Space Station.
- In 2001, the first private citizen, millionaire Dennis Tito, toured space. He paid $20 million to spend a week in space.
On July 20, 1969, Neil Armstrong and Buzz Aldrin became the first men to walk on the moon and return home safely â a journey of 250,000 miles.
Learn More All About Space Travel
Check out this cool video all about space travel:
A video about the N.E.X.T. mission for space travel by NASA.
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