The universe 1 ESO

1. THE UNIVERSE

2. What makes up the
Universe?
►It is all the:
 Matter
 Energy
 Space
►The Universe is made up of :
 GALAXIES.
 Galaxies contain STARS

4. OUR GALAXY: The Milky Way

5. 2 THEORIES

6. 1- GEOCENTRIC THEORY:
• Who proposed it?:
 Ptolomy
When?
In the 2nd century BC
2- HELIOCENTRIC THEORY
Who proposed it?
Nicolas Copernicus
When?
In 1542 (16th century)

7. PLANETS STARS
Bodies which orbit
some stars
Clouds of gases
pulled together by
gravitational forces
They don´t emit
light
They emit heat and
light

8. OUR SOLAR SYSTEM IS MADE
UP OF
►ONE STAR: The Sun
►8 PLANETS with their Satellites
►Dwarf planets: Pluto, Ceres, Eris
►Small Solar System bodies:
 Asteroids
 Comets
 Satellites

9. INNER PLANETS OUTER PLANETS
Closest to the Sun Not so close to the
Sun (far)
Rocky planets, made
of rock
Made of gases (Gas
giants)
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune

11. ASTEROID BELT

13. Units of measurement
►Astronomical units
 The distance from
the Earth to the Sun.
Light-year
The distance light travels in one year.

14. ►Video