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Fascinating Facts About Space and Space Travel

Here are some fascinating facts about space and space travel.

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Asteroids

An asteroid is a rock that orbits the sun.

To escape from earth's gravity a spaceship must reach 'escape velocity' (a speed of 11.2km/s).

Halley's Comet only appears every 76 years. The next time will be in 2062.

The plant with the shortest day is Jupiter - it lasts for just under 10 hours.

Shooting Stars are caused by tiny particles burning up as they enter the earth's atmosphere causing a luminous effect.

Sirius is the brightest star in the night sky. It is also known as the Dog Star.

John Glenn was the first American astronaut to orbit the earth.

The worlds first man to travel into space was the Russian airman, Yuri Gagarin. He made one orbit of the earth on April 12, 1961.

The first satellite launched into space was Sputnik 1. It was launched by Russia on October 4, 1957.

Russian cosmonaut Alexei Leonov became the first man to walk in space on March 18, 1965.

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