31 ms·

It's a fairly short and clear article, so no need for a Tl;DR. Note that this is NOT yet another "revolutionary" announcement, but just contemplative reasoning

by ssivark 13y ago

It's a fairly short and clear article, so no need for a Tl;DR. Note that this is NOT yet another "revolutionary" announcement, but just contemplative reasoning from a respected expert in gravitational physics.

peterwwillis 13y ago
Yeah, well. I don't get it. Could somebody summarize it in terms a 9 year old like myself can understand?
- pdonis 13y ago
  How about "Yes, gravity travels at the speed of light"?
  - marcosdumay 13y ago
    I like this better: "All of our theories say that yes, gravity travels at the speed of light, but nobody was ever able to test it on practice."
    - jack9 13y ago
      > All of our theories... Not so much. http://math.ucr.edu/home/baez/physics/Relativity/GR/grav_radiation.html http://math.ucr.edu/home/baez/physics/Relativity/GR/grav_rad...
    - pdonis 13y ago
      Yes, that's a more complete quick summary.
- aidenn0 13y ago
  Gravity travels at the speed of light, but it pulls you towards where the object is going to be when it left the object, not where it was when it left the object.
  - acchow 13y ago
    Thanks for this. Tweaking it slightly: > Gravity travels at the speed of light, but it pulls you towards where the object would be if the object kept moving at constant speed, not where it was when it left the object
    - aidenn0 13y ago
      It's been 10 years since I took a physics class, but isn't it constant acceleration, not constant speed?