2. DEFINITION
The region of the universe near the sun that
includes the sun, the nine known major
planets and their moons or satellites, and
objects such as asteroids and comets that
travel in independent orbits. The major
planets, in order of their average distance
from the sun, are Mercury, Venus, the Earth,
Mars, Jupiter, Saturn, Uranus, Neptune.
4. Mercury is the closest planet to
the Sun but, perhaps
surprisingly, it does not have the
highest temperatures. It is the
second densest planet of the
Solar System, but also the
smallest planet. The structure of
Mercury makes it the most
similar planet to Earth
6. Venus is the second
planet from the Sun
and the sixth-largest.
Together with Mercury,
they are the only
planets without a
satellite, even though
Mercury is closer to
the sun, Venus is the
hottest planet
8. Earth is the third
planet from the Sun
and the fifth largest
planet in the Solar
System with the
highest density. It is
currently the only
known location where
life is present.
10. Mars is the fourth planet
from the Sun and the
second-smallest planet
with a thin atmosphere,
having the surface features
reminiscent both of the
impact craters of the Moon,
and the valleys, deserts
and polar ice caps of
Earth. It is the most widely
searched planet for life
12. Jupiter is the fifth planet
from the Sun and the
largest planet of the
Solar System. It is the
oldest planet of the
Solar System thus it
was the first to take
shape out of the
remains of the solar
nebula.
14. Saturn is the sixth planet
from the Sun, with the
largest planetary rings in the
Solar System. It is the
second-largest planet after
Jupiter, and recently, with
many other moons being
discovered, it surpassed the
number of Jupiter’s moons
and is now considered the
planet with the most
numerous satellites
16. Uranus is the seventh
planet discovered in the
Solar System that also led
to the discovery of the last
planet, Neptune they are
both referred to as ice
giants. Officially
recognized in 1781 after
many observations in the
past, it is the third-largest
planet of the Solar System.
18. Neptune is the fourth
largest and the farthest
planet of the Solar System
with the most powerful
wind speeds out of all the
planets. It is the smallest of
the gas giants and is the
first planet to be
discovered by
mathematical predictions in
1846.
