Significats de open cluster en anglès

An open cluster is not, strictly speaking, a "star system," though.

M29 is an open cluster, while M30 is a globular?-

The cabbages had curled themselves up into compact heads that looked like big folded roses set in an open cluster of leaves.

The opening cluster of tracks are among the most steely.

Miliband said that bookmakers are circumventing laws limiting them to four machines per shop by opening clusters of shops close to each other.

Open clusters are physically related groups of stars held together by mutual gravitational attraction, typically with only a few hundred to a few thousand stars.