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Registered Member #1792
Joined: Fri Oct 31 2008, 08:12PM
Location: University of California
Posts: 527
A rebuttal is also out there:
wrote ...
... So why am I grumpfy about the New Scientist story? My real problem is that it seems to be a very preliminary bit of research announced by at a meeting of the American Geophysical Union, with no reviewed or published paper from its investigator, Ben Harris of the University of Texas at Arlington. Even the story points out that Harris’ calculation is incomplete:
Harris has yet to account for perturbations to the satellites’ orbits due to relativity, and the gravitational pull of the sun and moon. What’s more, preliminary data from NASA’s Juno probe, also presented at the AGU meeting, suggests its speed was as expected as it flew by Earth, casting doubt on the earlier anomalies.
Those aren’t minor problems! ...
Ash's zeroing in on this point from the article is quite right, making a claim of dark matter without accounting for all conventional orbital effects seems rather premature.
Remember. There's very little evidence that anything exists at all, yet we continue to believe in reality. But that's a topic for the philosophy forum, not 4HV, haha!
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
ASHPoD wrote ...
Ash Small:
Remember. There's very little evidence that anything exists at all, yet we continue to believe in reality. But that's a topic for the philosophy forum, not 4HV, haha!
I know I exist, even if I'm only dreaming
We can 'measure' things, though. The thing about 'dark matter' is that, by definition, it can't be measured. We can't even speculate how it could be possible to detect it.
There is obviously a reason why the universe is expanding/spinning at the rate it is. I'm of the opinion that we've not yet ruled out alternative explanations, as I pointed out in another recent thread.
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GPS satellites suggest Earth is heavy with dark matter - New Scientist article
