Haz un esquema y contesta a las preguntas.

Questions

How do stars produce light and heat?
How are stars classsified?
Which stars are the coolest?
What colour is our Sun?
How big are stars?
What are white dwarfs and red giants?
What do we call the amount of light from a star that reaches the Earth?
Which factors can affect a star's luminosity?.
What is a constelation?
What is a galaxy?
What keeps the galaxies together in space?
How many galaxies are there in the Universe?
Are all the galaxies the same shape?
What is the name of our galaxy?
What type of galaxy is it?

Is our Solar system in the centre of the galaxy?

• 
• 
• 
• 
•