Among the 88 official constellations, Cassiopeia ranks as the 25th largest and 30th brightest. It contains four stars (Alpha [α], Beta [β], Gamma [γ], and Delta [δ] Cassiopeiae) that are among ...

If you were among the countless numbers of people who spent time last week looking for Perseid meteors, you doubt took notice of a striking stellar arrangement in the northeastern part of the sky ...

On March 18, Japanese amateur astronomer Yuji Nakamura spotted something odd while observing Cassiopeia, a familiar constellation in the northern sky. It appeared that the constellation had a new ...

Here’s when you’ll see the next full moon, comets constellations and more. Venus will shine its brightest in February. Stars get a lot of attention for shining bright, but planets shine, too.

NASA's James Webb Space Telescope has revealed new details in a supernova remnant created by a massive exploding star 11,000 light-years away in the constellation Cassiopeia.

Cassiopeia circles in the north opposite to the Big Dipper, and so near to the pole that, like the Dipper, she too, never goes below the horizons of mid-northern latitudes. The Double Cluster ...

The Cassiopeia constellation is surrounded by celestial treasures. ... as the dense cores of the cluster thin out slowly to merge finally in the star-rich background of the galaxy itself.