Chapter Summary
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Stars are such heavenly bodies which emit light and energy of its own.
- The distance between the heavenly bodies are measured in light years.
- Constellations are the group of stars which tends to form a particular
shape.
- Planets are those heavenly bodies which revolve round the Sun.
- Satellites are those heavenly bodies which revolve round any of the planets.
- Solar System is made up of Sun ,planets, its satellites, asteroids, comets,
meteors and meteorites.
- The planets revolving round the Sun are Mercury, Venus,Earth, Mars,
Jupiter, Saturn, Uranus and Neptune.