Saggitarius A* image by Chandra X-Ray Observatory
|Right ascension||17h 45m 40.05s|
|Declination||±-29° 00′ 27.9″|
|Distance||25900±1400 light years|
|Notable features||Radio source in the center of the Milky Way|
|Other designations||Sgr A*|
|See also: Diffuse nebula, Lists of nebulae|
History[change | change source]
It was discovered betwwen the 13 and 15 february 1974 by the astronomers Bruce Balick and Robert Brown. It is a radio source, giving off strong radio waves. It is near the border of the constellations Sagittarius and Scorpius. It is part of a larger astronomical feature called Sagittarius A. Astronomers think it is the site of a supermassive (very large) black hole.  In 2002, a team of astronomers informed about the movement of the star S2 near Sagittarius A* during a cycle of 10 years. Agreeing with this information, they discard the posibility that said Sgr A* has got dark clusters inside it.
References[change | change source]
- Reynolds C. 2008. Astrophysics: bringing black holes into focus. Nature 455 (7209): 39–40. Bibcode:2008Natur.455...39R. doi:10.1038/455039a. PMID 18769426.