Astronomy

Alpha Ophiuchi – Star Facts

- 13 July 2016

Alpha Ophiuchi is also called ‘Rasalhague’ and can be found in the constellation of Ophiuchus. It’s a binary star system with its main star being 2.4 times the mass of the Sun. This star system is the brightest in its constellation and the 69th most luminous in the night sky. It came very close to the Sun around 389,000 years-ago.

Cancer – Constellation Facts

- 6 July 2016

Alessio Govi, Public domain, via Wikimedia Commons

Cancer means “the crab” in Latin and is the faintest of the 12 zodiac signs. It can be found in the second quadrant of the Northern hemisphere and is located specifically between latitudes of +90° and -60°. Like all the Zodiac signs, Cancer was first catalogued in the 2nd century by Ptolemy, who was a Greek astronomer.

Alpha Leporis – Star Facts

- 5 July 2016

Alpha Leporis is located in the constellation of Lepus, ‘the Hare’, and is also called ‘Arneb’. This 13 million year-old star is considered a lower luminosity yellow-white supergiant that may be entering the last phase of its cycle. It has a mass 14 times the Sun and 129 times its solar radius. Arneb was catalogued in the 2nd century by a Greek astronomer, Ptolemy.

Camelopardalis – Constellation Facts

- 1 July 2016

Camelopardalis is the 18th largest constellation covering 757 square degrees in the second quadrant of the Northern hemisphere. It can be viewed specifically at latitudes between +90° and -10°. Camelopardalis represents the giraffe, which was once known as a camel-leopard (it has a long neck like a camel and the spots of a leopard). For this reason it actually gets its name from the Latin derivative of the Greek word for giraffe; camel (Greek kamēlos) and leopard (pardalis).

Alpha Herculis – Star Facts

- 30 June 2016

Alpha Herculis has been given an ‘Alpha’ designation; however, it’s not the brightest star in its home constellation, it’s actually 129th brightest in the night sky. Its traditional name of Rasalgethi is derived from an Arabic phrase meaning, ‘the head of the Kneeler’. The ‘head’ comes from ancient times when the constellation was shown upside down on star maps.

Alpha Gruis – Star Facts

- 24 June 2016

Alpha Crucis is made up of two stars and is part of the Southern Cross in its home constellation. Historically, Amerigo Vespucci charted the stars in 1501, then an Italian explorer by the name of Andrea Corsali made a more accurate chart in 1515. This star appeared on celestial globes by both Petrus Plancius in 1598 and also Jodocus Hondius in 1600.

Caelum – Constellation Facts

- 23 June 2016

Bode, Public domain, via Wikimedia Commons

Caelum is the eighth smallest constellation in the sky, occupying only 125 square degrees. It is located in the first quadrant of the Southern hemisphere and can be viewed specifically at latitudes between +40° and -90°. The crooked line of Caelum represents “the chisel” and derives its name from the Latin language.

Alpha Crucis – Star Facts

- 17 June 2016

Alpha Crucis is made up of two stars and is part of the Southern Cross in its home constellation. Historically, Amerigo Vespucci charted the stars in 1501, then an Italian explorer by the name of Andrea Corsali made a more accurate chart in 1515. This star appeared on celestial globes by both Petrus Plancius in 1598 and also Jodocus Hondius in 1600.

Bootes – Constellation Facts

- 17 June 2016

Bootes is the 13th biggest constellation in size and covers 907 square degrees. It can be viewed in the third quadrant of the Northern hemisphere and lies specifically at latitudes between +90° and -50°. To correctly say, Bootes, each “o” is pronounced separately, putting emphasis on the “tes.”