Space is the boundless three-dimensional extent in which objects and events have relative position and direction.[1] Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime.
- Oxygen is circulated around the helmet in space suits in order to prevent the visor from misting.
- The middle layers of space suits are blown up like a balloon to press against the astronaut's body. Without this pressure, the astronaut's body would boil!
- Life is known to exist only on Earth, but in 1986 NASA found what they thought might be fossils of microscopic living things in a rock from Mars.
- There may be a huge black hole in the very middle of the most of the galaxies.
- If you fell into a black hole, you would stretch like spaghetti.
- Venus is the hottest planet in the solar system and has an average surface temperature of around 450° C. Interestingly, Venus is not the closest planet to the Sun – Mercury is closer but because Mercury has no atmosphere to regulate temperature it has a very large temperature fluctuation.
- The Moon has no atmosphere, which means there is no wind to erode the surface and no water to wash the footprints away. This means the footprints of the Apollo astronauts, along with spacecraft prints, rover-prints and discarded material, will be there for millions of years.
- Venus has a slow axis rotation which takes 243 Earth days to complete its day. The orbit of Venus around the Sun is 225 Earth days, making a year on Venus 18 days less than a day on Venus.
- space is completly silent
- The first person to look into space with a telescope was Galileo, nearly 400 years ago.
The first Earthling in space was Laika, a dog that was launched into space on the Soviet ship Sputnik 2 in 1957. After a week in space, the air in the capsule ran out and she died. After its orbit deteriorated, the craft left space and burned up, along with Laika’s body, as it re-entered Earth’s atmosphere
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