Star Clusters

Star Cluster

Stars are not always found alone in space. Many stars form in groups called star clusters, which are collections of stars that share a common origin and move together through space. There are two main types of star clusters: open clusters and globular clusters. Open clusters contain young, bright stars and are...

A star system is a small group of stars that orbit each other due to gravitational attraction.

If two stars orbit each other in a star system, it is called a binary star system. One example is Sirius, which contains Sirius A and Sirius B.

When more than two stars orbit each other, we call it a multiple-star system. HD 98800 is a qua...