• Ode to Oxygen

    Today, the air we breathe has lots of oxygen – over 20 percent! But that wasn’t always the case.

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.

What are comets?

When people think of objects in the solar system, they might think about planets first. But there are so many other objects in space to explore.

Meteorite vs asteroid

Meteorites are rocks from space, often from asteroids, Mars, or even the Moon. Join us on a journey through space and time, as we explore meteorites.

Cartoon of a radio satellite in space

If humans discovered aliens, what would they look like? And where would we find them? 

How do we study volcanoes on other planets?

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.