Scientists have spotted a few ancient clusters hidden behind younger stars and are understanding the beginnings of our galaxy.
Scientists have uncovered a rare galaxy cluster with a bursting heart.
A spectacular new image reveals sibling stars in an open star cluster. The new picture, which was captured with ESO's Wide Field Image, shows an amazing display of stars located about 3,000 light-years away.
When it comes to one particular type of star, "hot" doesn't even begin to explain how heated it becomes. Now, scientists have discovered the reason why small, unusually hot blue stars rise to scorching temperatures.
ESO's Very Large Telescope (VLT) has given scientists their best ever look at a spectacular cosmic collision. Researchers now have a view of the motion of gas being ripped out of a galaxy as it smashes into a vast galaxy cluster at high speed.
Scientists have used ESO and other telescopes in order to better understand the formation of one particular cluster: the Spiderweb Galaxy and its surroundings.
The Wide Field Imager on the MPG/ESO 2.2-meter telescope has captured a spectacular new image of one of the most star-rich open clusters currently known.
Astronomers have captured a spectacular mosaic of images of NGC 3603, a very bright star cluster famed for having the highest concentration of massive stars that have been discovered in our galaxy thus far.
With the help of the NASA/ESA Hubble Space Telescope, astronomers have managed to create the most precise map of a distant galaxy cluster.
ESO's La Silla Observatory in Chile has captured a spectacular new image of a beautiful star cluster called NGC 3293. The new picture reveals a bit more about the lives and deaths of sibling stars in the constellation of Carina.