The Greco-Roman Ptolemy listed 48 constellations after 150 AD. These were: Andromeda Ara Aries Aquarius Aquila Argo Auriga Boötes Cancer...

Stellar classification is usually based on two classification schemes, based on the star's surface temperature (the Harvard system), and...

Yes due to precession. About 12,000 BC Vega was the North Star, lying approximately at the north celestial pole, not Polaris, and in...

An asterism is a small pattern or collection of stars that are not constellations, although they are often parts of a constellation: eg....

The sky is divided into 88 sections, known as constellations, which astronomers use to locate and name celestial objects. Most of the...