64. Educational Web Sites
... The black hole at the Center of our Galaxy . stargaze/Sblkhole.htm . ... At the center of our galaxy, helping hold it together, is a black hole about 3.7 million times more massive than the Sun. ...
65. http://ip.rsu.ru/~vorobyov/shells.pdf
... where s0 is the stellar density in the center of the galaxy, and zs and rs are the ... face-on dwarf galaxies as HI rings with a low ring-to-center contrast in the HI ... face-on galaxies appears as a ring with a high ring-to-center HI column density ...
66. http://www.princetonastronomy.org/newsletters/01_2003sidereal.pdf
... force and acceleration when the acceleration is low as in galactic systems (the acceleration of the solar system toward the center of our galaxy is one angstrom per second per second, as compared to the Space Shuttle toward the center of the Earth which ...
69. Nancy Grace Roman Oral History
... in much shorter wavelengths, I was able to show that the center of the galaxy was not a single source, but was a mixture of ...
70. source comment
... The data could be confused with a strong radio source (3C 40) identified with a pair of galaxies at z=0.018, 170" from our field center. ...