Arp 273: This image of a pair of interacting galaxies called Arp 273 was released to celebrate the 21st anniversary of the launch of the Hubble Space Telescope. The Penguin and the Egg: This image ...

The Pleiades, Ptolemy's Cluster, the Large Magellanic Cloud — here's how to center the sky's brightest deep-sky wonders in ...

This cluster is home to some of the galaxy’s hottest ... situated about 17 million light-years away in the constellation Coma Berenices. It owes its spooky name to a broad dark dust lane ...

But, if it's crystal clear views of nebulas, star clusters and galaxies then a shorter focal ... is great for correcting issues such as the "coma" distortion effect and the aforementioned ...

The term ‘dark matter’ was first coined in the 1933 at Caltech by astronomer Fritz Zwicky. By measuring the speed of galaxies spinning in the Coma cluster he concluded that there was no where near ...

This mystery, first identified by Fritz Zwicky in 1937 while studying the Coma cluster of galaxies, revealed that galaxies within the cluster were moving far too fast to be held together by the ...