Free Science Videos and Lectures

The most famous American astronomer and astrophysicist Carl Sagan explains the Drake equation.

The Drake equation (rarely also called the Green Bank equation or the Sagan equation) is a famous...

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life, planets, stars, carl sagan, drake equation, extraterrestrial intelligence

Sagan was central to the discovery of the high surface temperatures of the planet Venus.

In the early 1960s, no one knew for certain the basic conditions of Venus' surface and Sagan listed the...

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venus, carl sagan, planet, nasa, 1960

The video of the very first moon landing of the Apollo 11 mission in 1969!

Neil Armstrong was the first man to set foot on the moon with his now legenday words "One small step for man, a giant...

This science video contains:
nasa, spacecraft, moon, moon landing, neil armstrong, houston, flag, buzz aldrin

On one of the Moon missions, NASA astronauts decided to prove Galileo Galilei right.

He reasoned that if there was no atmosphere, no dragging force then two objects of different mass falling from...

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ground, force, nasa, moon, galileo galilei, astronaut, atmosphere, gravity, hammer, feather

A slow motion video of a corn popping.

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high resolution, slow motion, corn, popcorn, burst, explode