9781422283684

These specks are some of the many lumps and bits of matter that are found in the space between the planets . Sometimes bigger lumps pass through the night sky and are lit up by the Sun. We see them as comets , with a glowing head and a long tail fanning out behind. There are also larger lumps still that we can’t see, orbiting in the space between Mars and Jupiter. These are the asteroids . It's pretty crowded out there in the Solar System !

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