What is the solar system?
It is our Sun and everything that travels around it.
Our solar system is elliptical in
shape. That means it is shaped like an egg.
The Sun is in the center of the
solar system. Our solar system is always
in
motion. Eight known planets and their moons, along with comets, asteroids,
and otherspace objects orbit the
Sun. The Sun is the biggest object in our solar
system. It
contains more than 99% of the solar system's mass. Astronomers
think the
solar system is more than 4 billion years old.
Astronomers are now finding new objects far, far from the Sun
which
they call dwarf planets. Pluto, which was once called a planet, is
now called a dwarf planet.
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REFERENCES: 1. http://nineplanets.org/
2. http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level1/solar_system.html
3. http://www.wired.com/wiredscience/2012/12/castles-in-space-1961-1971/our-solar-system-montage1/
