Did you know that. A new star is born in our galaxy every 18 days. There are more stars than all of the grains of sand on earth. Saturn is the only planet in the solar system less dense than water. The Virgo Cluster is 50 million light years away and is made up of 1000 galaxies. Every year, the Moon is moving away from Earth by 3. 8 centimeters.
アクセス許可