Young Stellar Clusters Found In Old Galaxy

Society | February 23, 2007, Friday // 00:00

Combining data from the NASA/ESA Hubble Space Telescope (HST) and the ESO Very Large Telescope (VLT), a group of European and American astronomers have made an unexpected major discovery.

They have identified a huge number of "young" stellar clusters, only a few billion years old, inside an "old" elliptical galaxy (NGC 4365), probably aged some 12 billion years. For the first time, it has been possible to identify several distinct periods of star-formation in a galaxy as old as this one.

Elliptical galaxies like NGC 4365 have until now been considered to have undergone one early star-forming period and thereafter to be devoid of any star formation. However, the combination of the best and largest telescopes in space and on the ground has now clearly shown that there is more than meets the eye.

This important new information will help scientists understand the early history of galaxies and the general theory of star formation in the Universe.

One of the challenges of modern astronomy is to understand how galaxies, those large systems of stars, gas and dust, form and evolve. In this connection, a central question has always been to learn when most of the stars in the Universe formed.

We need your support so Novinite.com can keep delivering news and information about Bulgaria! Thank you!

Society » Be a reporter: Write and send your article

Advertisement
Advertisement
Bulgaria news Novinite.com (Sofia News Agency - www.sofianewsagency.com) is unique with being a real time news provider in English that informs its readers about the latest Bulgarian news. The editorial staff also publishes a daily online newspaper "Sofia Morning News." Novinite.com (Sofia News Agency - www.sofianewsagency.com) and Sofia Morning News publish the latest economic, political and cultural news that take place in Bulgaria. Foreign media analysis on Bulgaria and World News in Brief are also part of the web site and the online newspaper. News Bulgaria