The solar system is a family of _______ planets.

The word planet is derived from a _________ word.

Who proved that the earth was round?

The line at which the earth and the sky seems to meet is called the ________.

In early days,people thought that the shape of earth was ____________.

How many years did it take to end the voyage of Magellan?

Where did Magellan's voyage end ?

The point where the land and sea meet is called

______________ is also called Akash Ganga.

Which astronomer said that the earth was shaped like a ball with out edges?