Our solar system consists of one star, the Sun, eight planets, over 50,000 asteroids and comets, and 61 moons orbiting the planets. It is centered around the Sun, which provides heat and light to the planets and contains nearly all of the mass in the solar system. The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

1. The Solar
System

2. What is our Solar System?
Our solar system is made up of:
● 1 star (the Sun)
● 8 planets
● 61 moons
● over 50,000 asteroids and
comets

3. The Sun
● Is a star (it looks much larger
than other stars because it is
a lot closer)
● Is the center of our Solar
System
● Contains nearly all of the
matter in the Solar System
● Provides Earth and (other
planets) with heat and light
● Life would not exist on Earth
without the sun

4. Mercury
● Closest planet to the sun
(58,000,000 km away)
● Very hot surface temperature
(425° C)
● Length of a Day:
58.67 Earth Days
● Length of a Year:
88 Earth Days

5. Venus
● Second planet from the Sun
(108,000,000 km away)
● Similar in size to Earth, and
has a thick atmosphere
● Length of a Day:
243 Earth Days
● Length of a Year:
225 Earth Days

6. Earth
● Third planet from the Sun
(150,000,000 km away)
● Has one moon, which orbits
the planet once every 29.5
days
● Only planet to have life (that
we know of) and liquid water
● Length of a Day:
24 hours
● Length of a Year:
365 Earth Days

7. Mars
● Fourth planet from the Sun
(228,000,000 km away)
● Has the largest volcano in the
Solar System
● Has a thin atmosphere, and
an ice cap containing frozen
water
● Length of a Day:
24.5 hours
● Length of a Year:
1.9 Earth Years

8. Jupiter
● Fifth planet from the Sun
(778,000,000 km away)
● Largest planet in the Solar System
(diameter of 143,000 km)
● Has a giant red spot (which is a
giant storm that never stops)
● Length of a Day:
10 hours
● Length of a Year:
11.9 Earth Years

9. Saturn
● Sixth planet from the Sun
(1,427,000,000 km away)
● Has a ring of dust and rocks
● Almost twice as far from the Sun
as Jupiter
● Length of a Day:
10.5 hours
● Length of a Year:
29.5 Earth Years

10. Uranus
● Seventh planet from the Sun
(2,869,000,000 km away)
● Its axis is tilted horizontally
(Rotates up and down instead of
sideways)
● About twice as far from the Sun as
Saturn
● Length of a Day:
17 hours
● Length of a Year:
84 Earth Years

11. Neptune
● Eighth planet from the Sun
(4,505,000,000 km away)
● Farthest planet from the Sun
● Has the largest moon in the Solar
System (Triton)
● Length of a Day:
16 hours
● Length of a Year:
165 Earth Years