Top Questions

Have questions about earth and space? A lot of other people do too. We have sorted through some top questions and are listing some of our answers.

We hope you enjoy them.

Basalt columns at Reynisfjara beach, Iceland
How Are Basalt Columns Formed?
Meteor Crater in Arizona, seen from a plane
How Are Craters Formed?
The Hope Diamond, one of the largest blue diamonds ever found
How Are Diamonds Made?
Image of the Earth rise from the moon, taken by NASA.
How Do We Know the Earth Is Round?
Voyager 2 spacecraft
How Far Have We Gone into Space?
Neil Armstrong on the moon
Was the Moon Landing Live?
Sun-temperature-NASA
Will the Sun Ever Stop Shining?

How Are Diamonds Made?
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