* Astronomy

The supergiant star FG Sagittae, is the nucleus of the faint planetary nebula PK 60-7°1. On first glance, FG Sge looked rather ordinary. It was recognised as a variable star only recently in 1943, even though it was first photographed in 1894. In 1894 the star was at photographic magnitude +13.6, in 1950 it reached +11, and by 1960 it has surpassed +10.
FG Sagittae continued to brighten and peaked in 1968 around m = +9.5. Between August 1992 and September 1992 a dramatic decline from m= +9.3 to +12.87 was observed. Within these large increases in brightness were small irregular variations. As it turns out, FG Sagittae has been in constant evolution since the beginning of this century.

Read more