The Sun is the star at the center of the Solar System. It is by far the most important source of energy for life on Earth. The Sun is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. The diameter of the Sun [ ]
http://worldgeographicchannel.com/beyond-the-secrets-of-the-sun-documentary-films/
No comments:
Post a Comment