Philip Hogan

How Big Would a Mole of Basketballs Be?

What Colors of Light Are Absorbed by Hydrogen Gas?

What Gives Wind Its Mass? The Physics of Moving Air

What Keeps the Earth Spinning?

What Do We Mean by the Star-Gas-Star Cycle?

Does Time Slow Down Near a Black Hole?

Why Can’t We Feel the Earth Moving?

Why Isn’t the Moon Blue? The Science of Its True Color

Why Is Earth Said to Be at the Triple Point for Water?

Is There a Center of the Universe?

How Long Can You Cryosleep? The Science and Limits

Does Space Have a Bottom? Explaining the Limits of the Universe

What Is the Difference Between a Black Hole and a White Hole?

What Happens When Two Black Holes Collide?

Why Is Large-Scale Nuclear Fission Rare on Earth?

What Is Critical Density and Why Does It Matter?

What Is the Highest Temperature Possible?

What Would Happen If There Was No Gravity?

What Would Happen to Galaxies Without Gravity?

Why Does Mass Curve Spacetime?