The size of the earth was round. In the first age , people believed that the earth was flat. He sailed around the world in 1596. We can consider the following verse of the Qur'an regarding the rotation of day and night. “Do you not see that Allah merges the night into the day and the day into the night ? - Surah Lokman - 29 That is, the night gradually changes and gradually turns into day , similarly day and slowly and gradually changes into night. This can only happen if the earth is round. The following verse also shows that the earth is round. Allah says: He created the heavens and the earth in truth. He covers the night with the day and covers the night. ” The word (Arabic) used in verse 5 of Surah Yommer means to twist or twist something. As the turban is wrapped around the head. The rotation of night and day is possible only when the earth is round. The earth is not round like a ball , but rather polar flat. The shape of the earth is described in the following verse. Allah says , " He has expanded the earth after that." The Arabic word Surah Naziat-30 has two meanings. One meaning is ostrich egg. The shape of the earth is polar centric flat like the shape of ostrich egg. Another meaning is 'to expand'. Both meanings are pure. This is how the Qur'an describes the shape of the earth accurately.