Tag Archive for 'Stellar association'

The Pleiades. Image credit: NASA / ESA / AURA / Caltech / Palomar Observatory.

Pleiades Star Cluster is Part of Much Larger Stellar Structure, Astronomers Say

Nov 13, 2025 by News Staff

Also known as the Seven Sisters and Messier 45, the Pleiades — an open star cluster about 440 light-years from Earth in the constellation of Taurus...

In this new composite image, the Chandra data (purple) shows the diffuse X-ray emission and young stars in Cygnus OB2, and infrared data from NASA’s now-retired Spitzer Space Telescope (red, green, blue, and cyan) reveals young stars and the cooler dust and gas throughout the region. Image credit: NASA / CXC / SAO / Drake et al. / JPL-Caltech / Spitzer / N. Wolk.

X-Ray and UV Emissions Impact Protoplanetary Disks in Cygnus OB2, Astronomers Suggest

Oct 30, 2024 by Enrico de Lazaro

Cygnus OB2 is the nearest massive young stellar association to our Sun. In this new composite image, the Chandra data (purple) shows the diffuse X-ray...