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
Hydra and surrounding constellations, from Urania's Mirror (1825).
The constellation Hydra as it can be seen by the naked eye.
Planetary nebula Abell 33 captured using ESO's Very Large Telescope.
Elliptical galaxy NGC 3923.
Centaurus is a bright constellation in the southern sky. One of the largest constellations, Centaurus was included among the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it rema
Hydra (constellation)
…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…
The two bright stars are (left) Alpha Centauri and (right) Beta Centauri. The faint red star in the center of the red circle is Proxima Centauri.
Centaurus in the southwestern sky, shortly after sunset. South is to the left.