Definition
Relativity, General: "Space tells mass how to move" while "mass tells space how to curve" -- J.A. Wheeler. More »
Relativity, Special: Einstein's rejection of the notion that space and time are absolute, based on the observation that the speed of light is independent of the motion of an observer. No matter how fast someone runs toward you with a flashlight, the speed of the light that flashlight emits will always remain the same. More »

Stargazing Tip
No stargazing tips found. Check the Sky Almanac for more information.

Displaying 1 to 5 (of 10 total) results | More results »
Title	Air Date
Shooting the Moon	July 17, 2009
Warp Drive	November 15, 2007
LIGO	December 23, 2005
Testing Relativity	December 22, 2005
Sun and Regulus	August 20, 2005
Note: Audio versions of our programs will be available the day after they air. Visit the transcript page to listen.

Displaying 1 to 1 (of 1 total) results

Image

Catching a (Tiny) Wave

Displaying 1 to 3 (of 3 total) results

Question

How do astronomers find planets outside our solar system?

What do scientists mean when they say space is curved?

Are there shortcuts through space?

StarDate Online | News | Extrasolar Planets http://stardate.org/resources/news/planets/index.html

StarDate Online | Solar System Guide | Mercury http://stardate.org/resources/ssguide/mercury.html

StarDate Online | Solar System Guide | Explorations in 2004 http://stardate.org/resources/ssguide/explorations2004.html

StarDate Online | Solar System Guide | Texas Connection http://stardate.org/resources/ssguide/texas_connection.html

StarDate Online | News | Time Marches On...But How? http://stardate.org/resources/news/universe/200306b.html

StarDate Online | Solar System Guide | Explorations in 2003 http://stardate.org/resources/ssguide/explorations2003.html

StarDate Online | Solar System Guide | Explorations in 2000 http://stardate.org/resources/ssguide/explorations2000.html