Answer 1:
No. Jupiter is the type example of what is
called a GAS GIANT planet. It is almost all
hydrogen and helium. There is some other
stuff there but that stuff in concentrated in its
core, but surrounding the dense core of Jupiter,
is a huge envelop of gas, mostly hydrogen and
helium. You can't stand on the surface of Jupiter
because it is just mainly a bigball of gas.
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Answer 2:
Judging by the great distance from the sun that
Jupiter formed, it is likely that Jupiter was
never a solid planet. During the formation of
Jupiter, the distance from the sun made it so that
solar winds (winds created by the sun) had
little impact blowing away light elements, such as
hydrogen and helium, allowing them to clump
together easily to form a planet composed of
mostly gas! Some scientists today believe that
Jupiter does have an extremely hot molten core,
while others believe it could just be solid rock.
Maybe one day when you are a scientist, you can
help decide!
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