Introduction In ancient Greece during the 7th century BC, scientists like Thales of Miletus (624-546 BC) started to realize that the Sun was not the deity Helios (Apollo) driving his chariot around the Earth, but […]
In astronomy, the magnitude of a star refers to its measure of brightness, and while absolute magnitude relates to the star’s intrinsic brightness, apparent magnitude, on the other hand, is a way of measuring how […]
Spica (Alpha Virginis) is a blue-white giant star located around 260 light years away in the constellation of Virgo. This 1st magnitude star is the 15th brightest in the entire night sky, and derives its […]
The night sky’s twenty-two brightest 1st magnitude stars are shown above, while the following table provides information on the 88 recognized constellations, together with details on their location, size, and brightest star.
Bellatrix (“female warrior”) is a bluish-white giant star located 250 light years away in the constellation of Orion, where it marks the giant’s western “shoulder”. It is the 3rd brightest star in Orion, with an […]
Achernar (Alpha Eridani) is the most luminous star in the constellation Eridanus, marking the southern termination of the River, and is the 9th most luminous star in the entire night sky. Being a hot, blue […]
Vega (Alpha Lyrae) is a beautiful bluish-white star located 25 light-years away in the constellation of Lyra. In addition to being the fifth brightest star in the night sky, it has other claims to fame, […]
Procyon is the most luminous star in the constellation Canis Minor, and the 8th most luminous star in the entire night sky. The star may appear yellowish-white, but Procyon is in fact a binary system […]