Thus, ADS stands for “Aitken double star.” His catalog contains measurements of 17,180 double stars north of declination –30°. Cluster in a rich field This week’s second small-scope ...

The European Southern Observatory (ESO) has released a stunning 80 million-pixel image of the star cluster RCW 38, as ...

For that, look to a double star that’s easier to split ... This celestial smudge combines an emission nebula with an open star cluster some 6,400 light-years away. Astronomers divide the ...

The core of a massive cluster of galaxies appears to be pumping out far more stars than it should. Now researchers at MIT and ...

A bouquet of thousands of stars in bloom has arrived. This composite image contains the deepest X-ray image ever made of the ...

Caldwell 71, or NGC 2477, is an open star cluster. Open clusters are loosely bound collections of stars. It is located roughly 4,000 light-years from Earth in the constellation Puppis.

In Taurus, Jupiter shines above the V-shaped Hyades star cluster and the bright orange star Aldebaran, the eye of the bull. Perhaps the most striking winter constellation is Orion, with its ...

Thousands of young stars shine within NGC 3603 which is one of the most massive and active star-forming clusters in the Milky Way Galaxy. Hubble captured a beautiful image of Westerlund 1.

The bright star NGC 1858, a 10-million-year-old open star cluster in the Large Magellanic Cloud, is captured in this vibrant image. This Hubble image reveals a loose collection of stars ...