Free Science Videos and Lectures

Mars is the fourth planet from the Sun in the Solar System. The planet is named after Mars, the Roman god of war. It is also referred to as the "Red Planet" because of its reddish appearance as...

This science video contains:
mars, earth, planet, surface, map, red planet, rotation, seasons

Building on the success of the two rover geologists that arrived at Mars in January, 2004, NASA's next rover mission is being planned for travel to Mars before the end of the decade. Twice as long...

This science video contains:
mars, planet, labaratory, rover, parachute, orbit, landing, exploration, msl

Do you know how tiny Earth is compared to other planets and stars?

We are very very tiny!
Earth is compared to Venus, Mars, Mercury and Pluto.
Then to Jupiter, Saturn , Uranus and Neptune
Then to...

This science video contains:
planets, stars, mercury, mars, venus, earth, neptune, saturn, jupiter, sun, sirius, pollux, arcturus, milky way, pluto, uranus, galaxy, sky, nasa, hubble telescope

The video shows how each planet scales in size relative to each other.

The exploration begins at the smallest planet Mercury which has diameter of just 4880 km, then comes Mars (6794 km), Venus,...

This science video contains:
planets, stars, mercury, mars, venus, earth, neptune, saturn, jupiter, sun, sirius, pollux, arcturus, rigel, beteigeuze, antares, my cephei, vv cephei