Page 11 - SOLAR SYSTEM

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M~med after: The Greek god of the sky
Ur-anus has
Diameter: 51,118 kilometres (<i.0 times Earth)
biggest moon, Titania, is less than
D_istance from the Sun: 28i'3 million
the size of our Moon. Even though it is kilometres
so small, it was spotted as long ago as Time to spin once: li'.2 hours
1787 by the astronomer William Time to orbit the Sun:
83.i' years
Herschel, who also discovered Uranus. R erage temperature:
11
-195°[
number of moons: 2i'

.., Only one spacecM\'t has
'
visited Ur-anus - Voyager~- It left Earth
in 1977 and arrived at Uranus 11 years later
in 1986. It is still the only spacecraft to have 'Y Voyager :i discovered ihat U~nus has
visited all four of the gas giants. a tilted magnetic tie\d. It also discovered
ten OT i't9 moons and n,,o OT i't9 rings.

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