Thu, 01 Jan 1970 01:00:00 +0100Tue, 28 Jul 2026 08:17:08 +0200Czechs toast the discovery of cosmic rays 100 years ago this weekhttps://english.radio.cz/czechs-toast-discovery-cosmic-rays-100-years-ago-week-8552144© 2026 Radio Prague International In the early morning hours of Tuesday a crowd gathered to watch the release of a hot air balloon over Prague’s Libuše meteorological observatory in honour of the 100th anniversary of the discovery of cosmic rays by the young Austrian physicist Victor Franz Hess. But, more than anywhere else the anniversary is being marked in the town of Ustí nad Labem where Hess’ successful balloon flight took place exactly a century ago. encr@radio.cz (Cesky Rozhlas)webmaster@radio.cz (CRo Webmaster) https://english.radio.cz/sites/default/files/images/hess_balon.jpg?timestamp=1591193994 Czechs toast the discovery of cosmic rays 100 years ago this week https://english.radio.cz/czechs-toast-discovery-cosmic-rays-100-years-ago-week-8552144 Radio Prague International Radio Prague International radio.prague.int@gmail.com clean 0 1 2 3 4 5 6 7 8 9