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At the occasion of the tercentenary of the astronomical observatory of Marseille in 2002, astrophysicists and technicians present some of their activities, from the research of extrasolar planets to recent programs of observation by UV or infrared.

This film was made in order to record the construction of the Vivitron, a tandem particle (heavy ion) superaccelerator developed by the Institut de recherches subatomiques (IreS) in Strasbourg.

Two microbiologists, Daniel Prieur and Patrick Forterre study Thermophilic bacteria which are microorganism that thrives at relatively high temperatures (100°C or even more). Those bacteria proliferate near warm spring. A shorter version of this film is available, called "Extreme bacteria".

In 1969, Thomas Brock showed through his researches that certain microorganisms can live at high temperature, even over 100°C. These are bacteria thermophiles which have colonized the ecological niches next to terrestrial and underwater hot springs. Daniel Prieur, a CNRS microbiologist, recounts the researches of the mission called Microsmoke (November and December 1995) which explored troughs in the Atlantic Ocean at 3.500 meters deep. Bacteria Thermophiles are maybe one of the first form…

Description of the particle accelerator SARA (Système accélérateur Rhône-Alpes) at the Grenoble Institute of Nuclear Science, which enables scientists to study collisions between nuclei in the intermediate energy range. SARA consists of a 20 MV cyclotron (injector) and an 80 MV cyclotron (post-accelerator).

During a French and Japanese symposium, three big equipments used for the physics researches in the region Ile-de-France are presented: the Super ACO storage ring from the LURE, a laboratory located in Orsay, the Orphée neutron reactor from the Léon Brillouin Laboratory (CEA-CNRS) located in Saclay, and the high energy laser from the LULI laboratory, located in Palaiseau.

New edition of the 1953 film "Cyclotron et pile atomique dans la science moderne", with commentary by scientists who took part in it, reviewing, thirty years later, the earliest developments of the nuclear industry in France.