28 janv. 2019 - Sun
Description:
Although the Sun looks like a perfect sphere from the Earth's point of view, it is not. It is not a perfect sphere due to its polar and equatorial diameter being different by 10 km. The Sun is mostly composed of hydrogen and helium and its 4.6 billion years old.Ajouté au bande de temps:
Date:
28 janv. 2019
Maintenaint
~ Il y a 6 ans et 9 mois