The Space Age Is Born

submitted by: nasa

View excerpts from an upcoming documentary,"Explorer 1: JPL and the Beginnings of the Space."
For more information see:

Time Dilation Video

submitted by: nsf
Is time different to observers moving at different speeds? For more information, see the World Year of Physics 2005 feature. A RealPlayer streaming version of the video also is available. To see the clip with the captions on, you will need to select Tools > Preferences > Content > Use Supplemental text captioning when available, or deselect it if you do not wish to see the captions. Then re-start the video....

Earth's Destiny

submitted by: scivee-team

A possible outlook for Planet Earth in a few billion years.What will happen to Planet Earth in a few billion years?

Studying the Sun

submitted by: scivee-team

Observing the sun - from Galileo's time to today.

Sun's Destiny

submitted by: scivee-team

Scientists discus the sun's future.

The Outer Planets

submitted by: scivee-team

Professors Gary Flandro and Bruce Murray discuss turning a journey to the outer planets Jupiter, Saturn, Uranus and Neptune a possibility.Plotting a trip to the outer planets.