Is There Gravity in Space?
If things float in space, how does gravity work?
How Do Parachutes Work?
Creating immense air resistance to oppose the force of gravity and slow a fall.
How Do Satellites Stay in Orbit?
Balancing the speed of the satellite with the gravitational pull of the Earth.
How Does a Pendulum Work?
The simple harmonic motion and energy conversion swinging back and forth.
What are Black Holes Made Of?
The physics behind a singularity and the collapse of massive stars.
What is a Black Hole Event Horizon?
The absolute boundary around a black hole beyond which nothing, not even light, can escape.
What is a Black Hole?
Regions of spacetime where gravity is so strong that even light cannot escape.
What is Dark Matter?
The invisible substance that makes up most of the universe's mass.