Secondary Catalogue

Series: The Study of the Universe


Causes of Aurora Borealis

Causes of Aurora Borealis

This video explains which of the atmosphere's chemical components are responsible for the aurora borealis.
Causes of Lunar Eclipse

Causes of Lunar Eclipse

On a full moon, when the Moon passes directly behind the Earth into its shadow, a lunar eclipse occurs. When the moon is entirely within the umbra, it causes a total lunar eclipse. When only a small part of the Moon’s surface is covered by the...Show More