If humans discovered aliens, what would they look like? And where would we find them?
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Rough and Smooth Lava
The surface of lava can appear smooth, rough, jagged, and sometimes like a pile of construction rubble. What are the stories behind these surface features and how did they form?
Ask An Earth and Space Scientist
Ask An Earth and Space Scientist is an educational resource for students, teachers, parents, and life-long learners. We encourage anyone interested in earth and space to make use of its content.
Volcanoes are found on other planets and moons across the solar system. The lava they erupt provides information on how other planets and moons formed.
The surface of lava can appear smooth, rough, jagged, and sometimes like a pile of construction rubble. What are the stories behind these surface features and how did they form?
Today, the air we breathe has lots of oxygen – over 20 percent! But that wasn’t always the case.
