The Owl Cluster is an open cluster in Cassiopeia that has the appearance of a bird in flight — at least to one magazine ...

As we've seen in recent posts, the northern constellation Cassiopeia is chock-full of intriguing nebulae and bright star ...

Cassiopeia (pronounced kass ee oh pee’ uh) the Queen is one of the first constellations amateur astronomers come to recognize. That’s because its five brightest stars form an asterism that ...

The Greeks added a nearby additional fainter star to the five main stars, so that the six together outline Cassiopeia's Throne. At this time of the year, as Cassiopeia ascends the late evening sky ...

“The Webb images are really amazing,” says Fesen, who led the first team that studied Cassiopeia A with the Hubble Space Telescope. Hubble observes in primarily optical light—the wavelength ...

Observations of Cassiopeia A with the James Webb Space Telescope and Chandra X-ray Observatory identified a distinct "Green Monster" feature and a complex network of oxygen-rich filaments.

More information: J. Rho et al, Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST, The Astrophysical Journal Letters (2024). DOI: 10. ...