The Earth's orbit around the Sun takes 1 months.
Venus is the bigges planet in our solar systme.
There are billions of galaxies and each galaxy has at leas 10 million stars.
A star is a sun in a different solar system from our own.
The first austronaut went to Mars in 1989.
The most powerful telescope on Earth is in the desert in Chile.
The planet Jupiter has got 63 moons.
There are rings around the planet Neptune.
We last saw Halley's Comet without a telescope in 1986 and we will see it next in 2061.
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