1. The visible part of the sun is called Photosphere.
2. The rings of Saturn were discovered by Galileo in 1610.
3. The comet, named after Edmund Halley, reappears after a time interval of every 76 years.
4. A Comet has a tail always pointing away from the sun.
5. The group of small pieces of rock revolving round the sun between the orbits of Mars and Jupiter are called Asteroids.

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