Here’s an easy way to use the prominent M or W shape of Cassiopeia to locate the Double Cluster in Perseus. Catch the wonder of the night sky. Subscribe to EarthSky’s free daily newsletter for the ...

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud, and are still loosely gravitationally bound to each other. In contrast, globular clusters ...

Galaxies and clusters are the ensembles of stars and other astronomical objects bound together by gravitational forces. Galaxies are ordered into galaxy groups, which are in turn organised into ...

How do you pronounce words that begin with lots of consonants? What is a consonant cluster? It's a word that has multiple consonant sounds together. Look at the consonants at the starts of these words ...

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