Another week, another roundup of your questions. This week listeners asked: if forces are communicated through particles, can we run out? If you were traveling at light speed, when would you know to stop? And there’s even more. If you’ve got a question for the Astronomy Cast team, please email it in to firstname.lastname@example.org and we’ll try to tackle it for a future show.
If forces are communicated through particles, can we run out?
- Four Fundamental Forces of Nature
- Gravitons — from Cornell University
- Feynmann Diagrams and forces between particles
- Book: The Elegant Universe by Brian Greene
If you were traveling at the speed of light, how would you know when to stop to get to the desired destination?
- Does time stop at light speed? –Discussion on PhysicsForum
- Book: Einstein’s Universe by Nigel Calder
If the Andromeda Galaxy is moving toward us really fast, would the galaxy look farther away than it really is?
- Spectrum of the Andromeda Galaxy –– from Suite 101
- Paper: The Collision Between the Milky Way and Andromeda
Does the weak force hold anything together or push things apart?
If Earth’s magnetic field acts on iron, would a sphere of iron have a different wieght than something else?
Transcript: Running Out of Gravitons and Hitting the Brakes at Light Speed
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