News
- Book Launch by author Piet van der Kruit
- On 29 Augustus 2019 there will be a book presentation "Jan Hendrik Oort - Master of the Galactic System" by Piet van der Kruit in the Old Observatory - Sterrewachtlaan 11, 2311 GP Leiden.
Register participationPubl. 2019-06-13 11:53:53