... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . ... ESO Acronyms . ... Survey Telescopes . ... Star Clusters . Stars . ... Stars@ESO . ... In the brightest region of this glowing nebula called RCW 34, gas is heated dramatically by young stars and expands through the surrounding cooler gas. ... But the young star-forming region RCW 34 has more to offer than a few bubbles; there seem to have been multiple episodes of star formation within the same cloud. ...