One of the favourite sci-fi scenes is that of the sky in the center of the Galaxy, which now has taken a newly visible form. Thanks to Slashdot, I have found a video of the movement of the stars closest to the black hole in the center of the Milky ...
As broadcast live on Chinese national TV, and announced by the People's Daily Online, now a second nation alongside Russia is capable of sending a human crew in space for extended missions.
I wonder when the US will also gain this technological capability?
The solutions of the equations of General Relativity are hard, and it is not surprising that only special cases have been analysed in detail. It is more surprising however that the professional cosmologists have chosed to treat an entire Galaxy with just the Newtonian mechanics, and when the results didn't ...
