WHAT ARE THE STARS?
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WHAT ARE THE STARS?
Definition of stars, their structure and where they are to be found. Formation of stars. The Milky Way – made up of approximately 15,000 million stars. The Sun, our best-known star. The Solar System: Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. The Earth receives just enough energy for life to exist on it. Different kinds of stars and their evolution. Summary.
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INTRODUCTION
- What are the stars?
- Through the use of telescopes, radio-telescopes and satellites, scientists finally managed to understand what stars are.
THE STARS
- How are stars formed?
- The sun
- The nearest star to the Sun is Alfa Centauri
- The Milky Way has an enormous quantity of stars the majority of them are thousands of light-years away from us.
- Due to stars being located at such tremendous distances away from us, light emitted by the stars many years ago, is being seen by us on Earth only now.
THE SUN
- Characteristis of the Sun
- The Solar System is composed by nine planets apart from our Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Pluto.
- Some planets have satellites orbiting around them. There are also asteroids and comets around them.
- Thanks to the Sun’s heat, our Earth receives just enough energy for life to exist on it.
- The Sun will not maintain the same energy output for ever.
KINDS OF STARS
- The mass of the stars
- Different types of stars
- Supernovas, pulsalrs, clack holes, red giants, white dwarfs,….
SUMMARY |
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