Page 13 - SOLAR SYSTEM

rk Spot was a giant super-
A Neptune'? Gre:-~:kwise once e\Jet"f 16 days.
stor111 spinning an

80 When Voyager ;i: l'f,ot091'<lphed
Neptune in 1989, it captur-ed a lar-ge dal"k
stor-m as big as far-th. The storm was called
the Great Dark Spot. But when the Hubble Space
Telescope was turned towards Neptune in 1994,
the Great Dark Spot had disappeared.

8 f Ne~time hos l"I "'°"n;, fo\11' of which
ar-e shepher-d moons. The biggest, Triton, was
discovered just 17 days after Neptune itself. Triton is
so cold that it has ice volcanoes shooting out a
mixture of liquid nitrogen, methane and dust.

Triton's su~ace is co\Jet-ed with frcn:en
nitrogen, a gas found on earth.

I DOIV'T 8££i£V£ IT!
Neptune was discovered to
be a planet in 1846, but it
was first seen by the great
astr-onomer, Galileo Galilei,
Z'34 years earlier. Galileo
thought he was looking at
a star, not a planet.