the constellation Orion with the Orion Nebula Cluster as the central “star” in the sword of Orion, the Pleiades and the Hyades. All three open clusters are highlighted by large yellow circles. Orion ...

The Orion Nebula, the Pleiades and the Hyades open clusters could represent the different phases of star clusters: baby, ...

The differences in location between open and globular star clusters result from the interplay between gravity and rotational motion. This rotational motion is called angular momentum, and is a ...

Warm mid-August summer nights offer prime conditions for spotting three magnificent star clusters visible to northern-hemisphere skywatchers in the coming months. Star clusters are gravitationally ...

Single stars are often overlooked in favor of their larger cosmic cousins — but when they join forces, they create truly breathtaking scenes to rival even the most glowing of nebulae or swirling of ...