Do you know who the first person was to walk on the Moon?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Aa
xAa : Hawaiian name for a type of lava flow with a surface that is broken into rough angular fragments which develop during cooling and loss of gas from pahoehoe flows.
A new study shows that water might have been on Earth very early in its history. Before this new information, scientists thought water came to Earth from comets. Scientists have learned this by studying...Read more