Knowledge without frontiers Knowledge Without Frontiers | Page 27

Inscription on the plasma spectrometer. Cultural Centre of European Space Technologies. One of the most important instruments humans have ever sent into space, the PLS has played a crucial role in the exploration of deep space by the Voyager 1 and Voyager 2 space probes, whose objectives included up-close in- vestigation of the gas giants beyond the aste- roid belt. The ultimate aim of the missions was KNOWLEDGE BELONGS TO EVERYONE In 2013 Mavretič donated several hundred to determine the boundary of the Solar System. kilograms of his research materials to the Nati- manmade object to pass this boundary; obta- a profound message in support of the accessibi- On 25 August 2013, Voyager 1 became the first ining and analysing the data demonstrating this achievement was made possible by the PLS. The solar wind is a simplified term for the stream of charged particles – particularly pro- tons and electrons – emitted by the Sun into interplanetary space. onal and University Library in Ljubljana, sending lity of knowledge. In a world in which scientific achievements and patents, in particular advan- ced technologies, quickly fall prey to private in- terests, he wanted to make his findings freely available to future generations of students and researchers because only humanity as a whole can lay claim to knowledge. 27