Travis Lund

How Do We Know What a Star Is Made Of?

When Did Theia Hit Earth and Form the Moon?

Where Are Protostars on the HR Diagram?

Where Do Elements Come From? A Journey Through the Cosmos

What Happens in the Convection Zone of the Sun?

What Does the Inside of Neptune Look Like?

Why Do Comets Have Tails?

What Happened During the Late Heavy Bombardment?

What Are the Physical Properties of Asteroids and Comets?

What Do Meteorites Reveal About the Solar System?

How Is Iron Made Naturally? From Stars to Earth

What Is Earth’s Birthday? The Science of Its Age

How Did the Ancients Know the Planets Were Different From the Stars?

What Is the Chemical Composition of a Star?

What Is a Helium Flash in a Star’s Core?

Is the Moon Magnetic? The Evidence for a Lost Lunar Dynamo

Why Does Mars Have More Extreme Seasons Than Earth?

Is There a Pink Planet? The Science Behind GJ 504b

Why Does Erosion Not Occur on the Moon?

What Factor Determines a Star’s Fate After the Main Sequence?