![Tim de Zeeuw with ESO students and fellows at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-36.jpg)
Tim de Zeeuw with ESO students and fellows at the ESO 50th anniversary gala event
![Tim de Zeeuw at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-34.jpg)
Tim de Zeeuw at the ESO 50th anniversary gala event
![Nadine Neumayer at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-33.jpg)
Nadine Neumayer at the ESO 50th anniversary gala event
![Annette Schavan at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-32.jpg)
Annette Schavan at the ESO 50th anniversary gala event
![Jan Palous at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-24.jpg)
Jan Palous at the ESO 50th anniversary gala event
![Lars Lindberg Christensen at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-23.jpg)
Lars Lindberg Christensen at the ESO 50th anniversary gala event
![Pierre Cox and Thijs de Graauw at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-22.jpg)
Pierre Cox and Thijs de Graauw at the ESO 50th anniversary gala event
![Richard Hook and Eric Emsellem at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-21.jpg)
Richard Hook and Eric Emsellem at the ESO 50th anniversary gala event
![Bruno Leibundgut at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-19.jpg)
Bruno Leibundgut at the ESO 50th anniversary gala event
![Jorge Melnick and Roberto Gilmozzi at the ESO 50th anniversary gala eventAnniversary Gala Event](https://cdn.eso.org/images/thumb700x/eso-gala-20.jpg)
Jorge Melnick and Roberto Gilmozzi at the ESO 50th anniversary gala eventAnniversary Gala Event
![Bruno Leibundgut at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-18.jpg)
Bruno Leibundgut at the ESO 50th anniversary gala event
![Mark Casali and Joana Correia at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-17.jpg)
Mark Casali and Joana Correia at the ESO 50th anniversary gala event
![Didier Queloz at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-16.jpg)
Didier Queloz at the ESO 50th anniversary gala event
![Anaëlle Maury and Laurent Vigroux at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-15.jpg)
Anaëlle Maury and Laurent Vigroux at the ESO 50th anniversary gala event
![Brian Schmidt and Michel Mayor at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-14.jpg)
Brian Schmidt and Michel Mayor at the ESO 50th anniversary gala event
![Brian Schmidt and Michel Mayor at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-12.jpg)
Brian Schmidt and Michel Mayor at the ESO 50th anniversary gala event
![Tim de Zeeuw at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-11.jpg)
Tim de Zeeuw at the ESO 50th anniversary gala event
![Wolfgang Heubisch at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-08.jpg)
Wolfgang Heubisch at the ESO 50th anniversary gala event
![Annette Schavan at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-07.jpg)
Annette Schavan at the ESO 50th anniversary gala event
![Xavier Barcons and the Eagle Nebula at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-06.jpg)
Xavier Barcons and the Eagle Nebula at the ESO 50th anniversary gala event
![The ceiling of the Kaisersaal](https://cdn.eso.org/images/thumb700x/eso-gala-03.jpg)
The ceiling of the Kaisersaal
![John Womersley at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb700x/eso-gala-04.jpg)
John Womersley at the ESO 50th anniversary gala event
![Just before the dinner at the ESO 50th anniversary gala event](https://cdn.eso.org/images/thumb300y/eso-gala-01.jpg)
Just before the dinner at the ESO 50th anniversary gala event
![Poster of Café & Kosmos 11 Sept 2012](https://cdn.eso.org/images/thumb300y/ann12059a.jpg)
Poster of Café & Kosmos 11 Sept 2012
![Chajnantor plateau](https://cdn.eso.org/images/thumb300y/kamphues-alma-86.jpg)
Chajnantor plateau
![The ESO 3.6-metre telescope under construction](https://cdn.eso.org/images/thumb700x/ehpa-1-jd-lso-005-cc.jpg)
The ESO 3.6-metre telescope under construction
![Early steps on the construction of the domes of the ESO 3.6-metre telescope and the 1.4-metre Coudé Auxiliary Telescope](https://cdn.eso.org/images/thumb700x/ehpa-10-140cat-tow.jpg)
Early steps on the construction of the domes of the ESO 3.6-metre telescope and the 1.4-metre Coudé Auxiliary Telescope
![Shared time](https://cdn.eso.org/images/thumb300y/jfs-ls-2011_8208.jpg)
Shared time
![De positie van de Herculescluster](https://cdn.eso.org/images/thumb300y/eso1211c.jpg)
De positie van de Herculescluster
![The ALMA Hotel Residence main hall (artist’s impression)](https://cdn.eso.org/images/thumb300y/ann11089b.jpg)
The ALMA Hotel Residence main hall (artist’s impression)