Ras Alhague is the α star in the constellation of Ophiuchus
Ras Alhague (Bayer designationAlpha Ophiuchus) is the brightest star in the constellationOphiuchus. Ras Alhague has an apparent magnitude of +2.1, belongs to the spectral classification A5, and is 60 light years distant from Earth. Many of the brighter stars are given names which are known as Bayer designations. ... The Pleiades star cluster A star is any massive gaseous body in outer space just like the Sun. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Ophiuchus (known as the serpent holder) is one of the 88 constellations, and was also one of the 48 listed by Ptolemy. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ...
The name Ras Alhague is from the ArabicRa's al Hawwa', "the Head of the Serpent-charmer." Arabic is a Semitic language, closely related to Hebrew and Aramaic. ...
Alpha particles or alpha rays are a form of particle radiation Particle radiation is the radiation of energy by means of small fast-moving particles that have energy and mass.
The alpha emitter polonium-210 is suspected of playing a role in lung Lung cancer is a malignant tumour of the lungs.
Because alpha particles occur naturally, but can have energy Energy is a fundamental quantity that every physical system possesses; it allows us to predict how much work the system could be made to do, or how much heat it can produce or absorb.
Feeds |
Contact