Answer 1:
The largest moon in the solar system is
Ganymede, the third of the large (Gallilean) moons
of Jupiter, which is bigger than Mercury. From
Ganymede, moons range down in size to grains of
dust. There is lots to know about the moons
of the various planets, their composition, origin,
and in some cases,their atmospheres. I cannot
provide you with a treatise on all of that, but I
can say that color depends on composition. Our
moon is made out of basalt, which is black, but
the sun is so bright that sunlight reflected off
of it makes it look white. In the inner solar
system, most moons are made out of rock, while
farther out, they tend to be icier. So far, the
only object in the solar system that human beings
have ventured to from the Earth is the Earth's
moon. Space probes have been sent to all of the
majormoons in our solar system, however. |
Answer 2:
All the planets have moons except Mercury and
Venus, the two planets closest to the
Sun.Jupiter's moons have the most variety, with
some being bare rock, some being slushy ice, and
at least one has hot volcanoes. Pluto's moon is
the weirdest. Pluto is so small that its moon is
almost as big as it is, and they both are in orbit
around each other, like twiddling your thumbs. In
fact, many people don't consider Pluto a planet,
but call it a "minor planet" instead. It's much
smaller than our own Moon.
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