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2. Our solar system is made up by celestial
bodies. Celestial bodies are natural
objects in the sky and they can be:
-The Sun
-Planets
-Satellites
-Comets
-Asteroids
-Meteorids

3. It is a star because it
produces light and
heat. The Sun is at the
centre of the Solar
System.

4. There are eight planets
that orbit, move around
or revolve around the
Sun.

5. Mercury is the planet
nearest to the Sun.
This small and hot
planet has no moons.
It takes 58 days to
rotate on its axis and
88 days to revolve
around the Sun.
Its temperature goes
from 465ºC to -184ºC.

6. Venus is the the hottest
planet because it can reach
449ºC and it has no moons.
It needs -243 days to rotate
on its axis and 224 days to
orbit the Sun.
Venus is known as the
“morning star” or “evening
star”.

7. We live on the
Earth, the third
planet from the
Sun. It takes 24
hours to rotate
and 365 days to
orbit the Sun.
It has one moon.

8. Mars is the most
Earth-planet in the
Solar System. It has
two moons and its
atmosphere is mainly
composed of carbon
dioxide.
The biggest vocano
in the Solar System
is there.

9. This is the surface of Mars. There is ice on
both north and south poles.
Mars needs more than 24 hours to rotate
on its axis and 686 days to revolve around
the Sun.

10. Jupiter is a gas giant
and the biggest planet
in our Solar System. It
is so big that the rest of
the planets could fit
inside it. It has 63
moons.
It needs 10 hours to
rotate on its axis and
almost 12 years to orbit
the Sun.

11. Saturn is a gas
giant which has
beautiful rings
made of ice and
rocks. It has 33
moons.
It needs 10 hours
to rotate on its
axis and more
than 29 years to
revolve around
the Sun.

12. Uranus is a light blue
gas giant with 27
moons.
This planet is
extremely tilted and a
gas called methane
gives it the blue
colour as it absorbs
red light.
It needs 18 hours to
rotate on its axis and
84 years to revolve
around the Sun.

13. Neptune is a blue gas giant
because its atmosphere is
also composed of methane.
It has 13 moons and it
needs 16 hours to rotate on
its axis and more than 164
years to orbit the Sun!
So, it is the farthest planet
to the Sun.
The poles are in constant
darkness of sunlight for 40
years at a time.

14. PLANET
MOONS
ROTATION
REVOLUTION
Mercury
0
58 days
88 days
Venus
0
-243 days
224 days
Earth
1
24 hours
365 days
Mars
2
24 hours
686 days
Jupiter
63
10 hours
Almost 12
years
Saturn
33
10 hours
29 years
Uranus
27
18 hours
84 years
Neptune
13
16 hours
164 years

15. It is the only known planet where
living things can survive. This is
because:
- It has enough oxygen in its
atmosphere.
-There is water on its surface.
-Its warm temperature: it is not too hot
or too cold.

16. The Moon is the Earth’s only natural
satellite. It rotates on its axis at the
same time that the Earth, so it needs
24 hours to do so. It also takes about
28 days to orbit the Earth.
Remember!: Satellites, like planets, do
not produce light and heat. The Moon
shines because it reflects off the light
from the Sun.

17. FIRST
QUARTER
THIRD
QUARTER
FULL
MOON
CRESCENT
MOON
CRESCENT
MOON

18. They are space rocks. Some
asteroids are as big as mountains.
Some meteorids are as small as a
grain of sand.

19. ASTEROID
APPROACHING A
PLANET

20. A comet is like a big snowball
with a rock in the middle.
Comets start to melt when they
get close to the Sun. A melting
comet has a long tail.

21. COMETS APPROACHING A
PLANET