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gravity

Stuff to Blow Your Mind: Gravity
Image: NASA

Stuff to Blow Your Mind: Gravity

Does time pass more slowly at the bottom of a building that at its top? Yes! Because of gravity — the force that holds the universe together.

With nothing more than a hula hoop and some plastic, this video shows what gravity is: space and time bent by matter.

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The BrainStrainer

The BrainStrainer

Do you have what it takes to build a successful rocket launcher? Put your knowledge of projective motion, potential energy, kinetic energy, and gravity to the test in this fun game. More...

Game
IHS Engineering
Gravity Simulator

Gravity Simulator

In this game, stars, planets, and asteroids are your toys. Fling them into space. Watch gravity pull them into orbit around each other. And save the fantastic patterns you make. More...

Game
TestTubeGames
Gravity: From Newton to Einstein

Gravity: From Newton to Einstein

First Einstein realized that nothing can go faster than light. See how this led him to a completely new explanation of gravity. More...

Video
NOVA/PBS
Introduction to LIGO and Gravitational Waves

Introduction to LIGO and Gravitational Waves

Do gravity waves exist? Einstein thought so. Scientists have built huge machines to detect them. Success could mean getting a look at the Big Bang, itself. More...

Article
LIGO Scientific Collaboration
Physics of a Popping Water Balloon

Physics of a Popping Water Balloon

What happens when a sharp object bursts a water balloon? See, in slow motion, how the water initially holds the shape of the balloon — until air resistance and gravity take over. More...

Video
National Science Foundation
8 Black Hole Videos that Will Suck You In

8 Black Hole Videos that Will Suck You In

Watch "Birth of a Black Hole" first, to see what gravity does to a huge, dying star. Then, enjoy the wild ideas in the other videos. More...

Video
Science Channel
Gravity and Orbits

Gravity and Orbits

Change the mass of the Earth and the moon, and see what happens to their orbits. Or, change the mass of the sun. Or, turn off gravity altogether. More...

Interactive
University of Colorado
Pie-Pan Accelerometer

Pie-Pan Accelerometer

Grab a metal pie pan and hardware nuts along with some string and experiment to see firsthand the acceleration of gravity. More...

Activity
Discovery
‘Potato’ Earth’s Deep Secrets

‘Potato’ Earth’s Deep Secrets

A map showing where Earth's gravity is stronger and weaker, makes our planet look like a potato. It can also help us understand climate change. More...

Article
BBC
Drop Box

Drop Box

Without leaving home, you can test how things react to the microgravity of Earth's orbit. Check out Tiana and Sammy's video, then try it for yourself. More...

Activity
DragonflyTV/PBS
Gravity in Terms of Space-Time

Gravity in Terms of Space-Time

Space and time are a fabric? Gravity is a shape? So said Einstein, who changed our view of the universe. Watch! More...

Video
History Channel
Gravity Launch

Gravity Launch

How do you launch a rocket so it end up in orbit around the Earth or the Moon? Get a real feel for gravity with this game. More...

Interactive
AAAS
The Apollo 15 Hammer-Feather Drop

The Apollo 15 Hammer-Feather Drop

What happens if you drop a hammer and a feather simultaneously? Do they hit the ground at the same time? What if you are on the Moon? Watch and find out! More...

Video
NASA
Your Weight on Other Worlds

Your Weight on Other Worlds

Find out how much you'd weigh on other planets and moons, even stars. Then scroll down to a great explanation of gravity, and an unforgettable poem. More...

Interactive
Exploratorium

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