Thu Dec 27, 2012, 04:02 PM

Speed of Gravity equal to speed of light

BEIJING, Dec. 27 (Xinhua) -- Chinese scientists revealed Wednesday that they have found evidence supporting the hypothesis that gravity travels at the speed of light based on data gleaned from observing Earth tides.

Scientists have been trying to measure the speed of gravity for years through experiments and observations, but few have found valid methods.

By conducting six observations of total and annular solar eclipses, as well as Earth tides, a team headed by Tang Keyun, a researcher with the Institute of Geology and Geophysics under the Chinese Academy of Sciences (CAS), found that the Newtonian Earth tide formula includes a factor related to the propagation of gravity.

http://news.xinhuanet.com/english/sci/2012-12/27/c_132067538.htm

Open abstract and paper link

http://link.springer.com/article/10.1007/s11434-012-5603-3

21 replies	Author	Time	Post
Speed of Gravity equal to speed of light (Original post)	Ichingcarpenter	Dec 2012	OP
Cool, I didn't know gravity went anywhere.	iemitsu	Dec 2012	#1
Gravity s working against me And gravity wants to bring me down	Ichingcarpenter	Dec 2012	#3
Gravity is working its evil ways on me too,	iemitsu	Dec 2012	#5
I thought I recognized John Mayer.....	unhappycamper	Jan 2013	#21
Look up gravity wave. I anticipate there is a Gravity spectrum analogous to ElectroMagnetic spectrum	Bernardo de La Paz	Dec 2012	#14
Sure, and gravitational wave detection schemes have frequency-dependent sensitivities	caraher	Dec 2012	#20
Assuming they're correct...	gcomeau	Dec 2012	#2
You know, I'm sure there was a time when we thought it was impossible to exceed the speed of sound	dballance	Dec 2012	#4
I don't believe there was ever a physical theory that said so.	FiveGoodMen	Dec 2012	#6
That is a myth.	Odin2005	Dec 2012	#10
Okay, I'm wrong - Happy now that I admit it?	dballance	Dec 2012	#11
"The really creative and intelligent people will find a way to exceed our foolish thoughts..."	FiveGoodMen	Dec 2012	#12
I guess I'm just stupid	dballance	Dec 2012	#13
I didn't call you stupid	FiveGoodMen	Dec 2012	#17
Oh my friend	dballance	Dec 2012	#19
It may be that exploding atomic weapons has started a chain	iemitsu	Dec 2012	#16
Good grief. Gravity is only a theory. nm	rhett o rick	Dec 2012	#7
This message was self-deleted by its author	littlemissmartypants	Dec 2012	#8
That's a strange thing to say.	DavidDvorkin	Dec 2012	#9
This message was self-deleted by its author	Bernardo de La Paz	Dec 2012	#15
Fucking magnets.	progressoid	Dec 2012	#18

Speed of Gravity equal to speed of light

1. Cool, I didn't know gravity went anywhere.

3. Gravity s working against me And gravity wants to bring me down

5. Gravity is working its evil ways on me too,

21. I thought I recognized John Mayer.....

14. Look up gravity wave. I anticipate there is a Gravity spectrum analogous to ElectroMagnetic spectrum

20. Sure, and gravitational wave detection schemes have frequency-dependent sensitivities

2. Assuming they're correct...

4. You know, I'm sure there was a time when we thought it was impossible to exceed the speed of sound

6. I don't believe there was ever a physical theory that said so.

10. That is a myth.

11. Okay, I'm wrong - Happy now that I admit it?

12. "The really creative and intelligent people will find a way to exceed our foolish thoughts..."

13. I guess I'm just stupid

17. I didn't call you stupid

19. Oh my friend

16. It may be that exploding atomic weapons has started a chain

7. Good grief. Gravity is only a theory. nm

9. That's a strange thing to say.

18. Fucking magnets.