Open Clusters
Evolution of a "Blue Lurker" Star in a Triple System Panel 1: A triple star system containing three Sun-like stars.…

The name “blue lurker” might sound like a villainous character from a superhero movie. But it is a rare class…
Celestial Fireworks in Westerlund 2 The brilliant tapestry of young stars flaring to life resemble a glittering fireworks display in…
Resembling an opulent diamond tapestry, this image from NASA's Hubble Space Telescope shows a glittering star cluster that contains a…

Some of the Milky Way’s “celebrity stars” — opulent, attention-getting, and short-lived — can be found in this Hubble Space…
[Left] - A normal star in a binary system gravitationally pulls in matter from an aging companion star that has…
For the past 60 years, astronomers have been puzzled by an unusual type of star that looks hotter and bluer…

In a survey of NASA’s Hubble Space Telescope images of 2,753 young, blue star clusters in the neighboring Andromeda galaxy…