- Hydra (constellation) (Wikipedia)
Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees, and also the longest at over 100 degrees. Its southern end borders Libra and Centaurus and its northern end borders Cancer. It was included among the 48 constellations listed by the 2nd century astronomer Ptolemy. Commonly represented as a water snake, it straddles the celestial equator.
- Fomalhaut (stars.astro.illinois.edu)
FOMALHAUT (Alpha Piscis Austrinus). This wonderful first magnitude (1.16, ranking 18th) star of northern-hemisphere autumn, usually pronounced “fo-ma-low,” slides slowly in lonely grandeur above the southern horizon (as seen from the north) during the months of October and November.
- Fomalhaut (Wikipedia)
Fomalhaut (UK: /ˈfɒməloʊt/, US: /ˈfoʊməlhɔːt/) is the brightest star in the southern constellation of Piscis Austrinus, the Southern Fish, and one of the brightest stars in the night sky. It has the Bayer designation Alpha Piscis Austrini, which is an alternative form of α Piscis Austrini, and is abbreviated Alpha PsA or α PsA. This is a class A star on the main sequence approximately 25 light-years (7.7 pc) from the Sun as measured by the Hipparcos astrometry satellite. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified.
