stars, constellations and galaxies

1. © Elena, Juan y Liz
Stars, Constellations and Galaxies

2. STARS are enormous spheres of gas where nuclear
reactions produce enormous amounts of light and heat.
Colour
STARS are
classified by
Size
Luminosity
© Elena, Juan y Liz
Blue
Yellow
Hottest and youngest
White dwarfs
Smallest
Orange
Red
White
Coolest and oldest
Red giants
Biggest
Depends on colour, size and DISTANCE TO THE EARTH
Stars, Constellations and Galaxies

3. The brightest star in the sky is the SUN.
It is a yellow and average star.
It is the closest star to the Earth
The second brightest star in the sky
is SIRIUS.
It is 8.6 light years from the Earth
© Elena, Juan y Liz
Stars, Constellations and Galaxies

4. CONSTELLATIONS are groups of stars easily identified from
the Earth. They are named because of their shape
Some examples:
© Elena, Juan y Liz
Stars, Constellations and Galaxies

5. GALAXIES are enormous systems of stars, dust and gas that
is held together by the force of gravity
Spiral
GALAXIES are
divided into
Elliptical
Irregular
© Elena, Juan y Liz
Stars, Constellations and Galaxies

6. Our SOLAR SYSTEM is part of a spiral galaxy called
MILKY WAY
© Elena, Juan y Liz
Stars, Constellations and Galaxies

7. © Elena, Juan y Liz
Stars, Constellations and Galaxies