سياره نپتون

در بلاگ
cosmic varianceمطلب جالبي نوشته شده:

Dark Matter: Still Existing
Sean at 3:41 pm, November 1st, 2007
I love telling the stories of Neptune and Vulcan. Not the Roman gods, the planets that were originally hypothesized to explain the mysterious motions of other planets. Neptune was propsed by Urbain Le Verrier in order to account for deviations from the predicted orbit of Uranus. After it was discovered, he tried to repeat the trick, suggesting a new inner planet, Vulcan, to account for the deviations of the orbit of Mercury. It didn’t work the second time; Einstein’s general relativity, not a new celestial body, was the ultimate explanation.

In other words, Neptune was dark matter, and it was eventually discovered. But for Mercury, the correct explanation was modified gravity.


بقيه ماجرا را مي توانيد در اينجا بيابيد.