"It appears that there is a preferred physical environment in which stars form when they evolve within these clouds." ...

Betelgeuse is one of the brightest stars in the night sky, and the closest red supergiant to Earth. It has an enormous volume ...

Large pairs of planets thought to orbit each other without a star, do not exist after all. That conclude Leiden researchers, ...

The Orion Nebula, the Hyades and the Pleiades are visible to the naked eye. The star clusters are obviously examples of different stages of development.