1. how many planets are there in the solar system?

There are 8 planets in the solar system.

2.What are the names of all the planets?

Mercury,Venus,Earth,Mars,Jupiter,Saturn,Neptune and Uranus.

3.What is the biggest planet?

The biggest planet is Jupiter.

4.What is the sun made up of?

The sun is made up of really hot gas.

5.How long does it take for the Earth to orbit the sun.

It takes one year/365 days for the Earth to orbit the sun.

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