THAT IS THE SOLAR SISTER:
The Solar System consists of the Sun and those celestial objects bound to it by gravity, all of
which formed from the collapse of a giant molecular cloud approximately 4.
6 billion years ago.
Of the retinue of objects that orbit...
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THAT IS THE SOLAR SISTER:
The Solar System consists of the Sun and those celestial objects bound to it by gravity, all of
which formed from the collapse of a giant molecular cloud approximately 4.
6 billion years ago.
Of the retinue of objects that orbit the Sun, most of the mass is contained within eight relatively
solitary planets whose orbits are almost circular and contained within a nearly-flat disc called
the ecliptic plane.
The four smaller inner planets; Mercury, Venus, Earth and Mars, also called
the terrestrial planets, are primarily composed of rock and metal.
The four outer planets, Jupiter,
Saturn, Uranus and Neptune, also called the gas giants, are composed largely of hydrogen and
helium and are far more massive than the terrestrials.
The Solar System is also home to two
regions populated by smaller objects.
The asteroid belt, which lies between Mars and Jupiter, is
similar to the terrestrial planets as it is composed mainly of rock and metal.
Beyond Neptune s
orbit
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