Incorrect
1. Wikipedia is a valuable resource for any sort of topic for which no controversy could plausibly exist. For anything else (such as this topic), Wikipedia is worthless.
2. If there actually is such a thing as a "gravity wave", it will propagate at C as wiki claims. That's a big "IF" however; nobody has ever seen a gravity wave.
3. Gravity itself, however, propagates instantaneously as I noted. This has been known for centuries and our own solar system would not hold together otherwise.
Tom Van Flandern's page on gravity speed experiments:
http://metaresearch.org/cosmology/speed_of_gravity.asp
Face on Mars. Richard c. Hoagland. Coast to Coast AM. Oh, yeah!
“Van Flandern was a prominent advocate of the belief that certain geological features seen on Mars, especially the “face at Cydonia”, are not of natural origin, but were produced by intelligent extra-terrestrial life, probably the inhabitants of a major planet once located where the asteroid belt presently exists, and which Van Flandern believed had exploded 3.2 million years ago.[34] He gave lectures on the subject,[35] and at the conclusion of the lectures he described his overall conception:[citation needed]
“We’ve shown conclusively that at least some of the artifacts on the surface of Mars were artificially produced, and the evidence indicates they were produced approximately 3.2 million years ago, which is when Planet V exploded. Mars was a moon of Planet V, and we speculate that the Builders created the artificial structures as theme parks and advertisements to catch the attention of space tourists from Planet V (much as we may do on our own Moon some day, when lunar tourism becomes prevalent), or perhaps they are museums of some kind. Remember that the Face at Cydonia was located on the original equator of Mars. The Builder’s civilization ended 3.2 million years ago. The evidence suggests that the explosion was anticipated, so the Builders may have departed their world, and it produced a massive flood, because Planet V was a water world. It is a coincidence that the face on Mars is hominid, like ours, and the earliest fossil record on Earth of hominids is the “Lucy” fossil from 3.2 million years ago. There have been some claims of earlier hominid fossils, but Lucy is the earliest that is definite. So I leave you with the thought that there may be a grain of truth in The War of the Worlds, with the twist that WE are the Martians.
When it was first imaged, and into the 21st century, the “Face” is near universally accepted to be an optical illusion, an example of pareidolia, and theories that it was an artificial artifact were considered to be pseudo-science.[36][37] After analysis of the higher resolution Mars Global Surveyor data NASA stated that “a detailed analysis of multiple images of this feature reveals a natural looking Martian hill whose illusory face-like appearance depends on the viewing angle and angle of illumination”.
...Violates causality.