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The first animals in space were tiny fruit flies.

The first animals in space were tiny fruit flies.

In 1947, before any people went up, scientists sent fruit flies on a rocket to see if living things could survive the trip. They came back safely.

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Astronauts float around inside their spaceship. Astronauts float around inside their spaceship. Rockets need lots of fuel to blast up into space. Rockets need lots of fuel to blast up into space. Space is completely silent because there is no air to carry sound. Space is completely silent because there is no air to carry sound. Astronauts wear special suits so they can breathe in space. Astronauts wear special suits so they can breathe in space. Footprints left on the Moon can stay for millions of years. Footprints left on the Moon can stay for millions of years.