Star clusters or star clouds are groups of stars. Two types of star clusters can be distinguished: globular clusters are tight groups of hundreds or thousands of very ...
Stars do not occur in space at completely arbitrary places. Some, such as the Sun, are single (field star), but others are members of pairs or form multiple-star systems.
Globular Globular clusters are gravitationally bound concentrations of approximately ten thousand to one million stars. They populate the halo or bulge of the Milky ...
Star cluster, either of two general types of stellar assemblages held together by the mutual gravitational attraction of its members, which are physically related ...
Frosty November is often called the month of the Pleiades, because it's when this star cluster - sometimes called the Seven Sisters - shines from dusk until
Variable Stars: Astronomers noticed that there was a gap in the HR diagram of old clusters. Stars, that are rarely found in this gap, were found to vary in their ...
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives ...
Star clusters are groups of stars which are gravitationally bound. Two distinct types of star cluster can be distinguished: globular clusters are tight groups of ...
Many stars in the universe are found grouped together as star clusters. Star clusters are groupings of stars held together by a common gravitational bond. They vary ...
Watch videos from BBC programmes that are full of facts about star clusters and presented by easy-to-understand experts such as Brian Cox and Patrick Moore.