The word “comets” in the title of this chapter needs explanation. I choose this word because many Hungarian electrochemists, whose contribution to the electrochemistry was a pivotal one, appeared in the sky of science as a new shining phenomenon but they disappeared rather quickly. It was due to either the historical events in Hungary or they did not continue their scientific research at high level because of the low financial support, or just enjoyed the professorship which gave a high reputation in the society. In many cases, both reasons prevailed. In order to understand at the first glance strange thing, it is necessary to give a short compilation of the history and tradition in Hungary. In the middle of the nineteenth century, a fight for reforms and the use of the Hungarian language have started. The latter is an important point in respect of our story because otherwise it would be difficult to understand the motivation of many researchers who have published practically solely in Hungarian in the scientific journals founded in the second half of the nineteenth century. (Later it became the asylum of poor papers in the twentieth century both before and after 1945. Several professors who had been decorated with different titles and medals were just afraid to expose themselves to the peers’ review internationally.) After the Settlement (Ausgleich) in 1867, a fantastic development of Hungary started within the Austro-Hungarian Empire. It involved the industry, the commerce, new railways, roads, buildings, and last but not least the civil rights. The industry, the agriculture, the health care, etc. needed more experts, therefore, the enrollment at the universities enormously increased. Practically all of the future scientists spent years at the famous German universities as graduate students or “postdocs” before starting their academic career in Hungary or in Austria. The only exception was the field of radioactivity which was studied in Vienna, Paris, Manchester, and Cambridge. A very sad turning point was the celebration of the millennium of the Hungarian conquest in 1896 which brought a wave of increasing nationalism and the counterattack from the feudal establishment. It led eventually to the emigration of the scientists mostly of Jewish origin after 1919 who felt that they were deprived of the opportunity of any scientific career or even their life was in danger. It was a great loss concerning the scientific life in Hungary. The development of the civil society stopped. Albeit under other ideology, the persecution of civil thought continued during the socialist period from 1948 to 1989. It also affected the scientific life whose prime element is the freedom, the exchange of ideas without any political influence. Furthermore, the “Iron curtain” prevented the traveling of researchers between East and West with very limited exceptions involving the ideologically fit persons. Until ca. 1960, the visit in any other socialist countries was rather limited, too. Later, the situation somewhat improved. First, conferences were organized for the researchers of socialist countries, and from the second half of 1970s, to go abroad from Hungary, where the ruling party allowed more to the people than in several other socialist countries, gradually became easier. Nevertheless, in many areas of science including electrochemistry, surprisingly good results were achieved even under these limited conditions. It was mostly due to the state’s support of science and education as well as to outstanding personalities. The top scientists in the field of electrochemistry (Frumkin, Heyrovský, Kemula, Erdey-Gruz, and Schwabe) had contact with each other, and the younger researchers could visit the laboratories or institutes of these professors which was really a particular experience for them. Practically, journals in the official language of the country existed in all socialist countries, and in many cases, also multilingual journals. Multilingual meant that those journals accepted papers in German, in English, in French, and in Russian. Before the era of overwhelming domination of English, one could publish papers in these languages even in Electrochimica Acta, the journal of the International Society of Electrochemistry. After 1945, Russian language was forced with no real success. During the socialist period, the salary was low, and a rather limited amount of money was available to buy more expensive instruments for foreign currency. In electrochemistry, there was a local production of electrodes, voltmeters, potentiostats, etc.; therefore we had access to a relatively good instrumentation. Our library purchased all the important journals and books even from the West, which is not the case anymore due to the financial problems. In the 1950s, research institutes were built which belonged to the Hungarian Academy of Sciences. Nevertheless, except a short period in 1950s, the Soviet instructions were not obeyed, and research activity remained also at the universities. The situation of the electrochemistry in Hungary separated by the Iron curtain from the West will be illustrated with the life and activity of three scientists: Tibor Erdey-Gruz, Ernő Pungor, and Gyorgy Horanyi whose achievements have been acknowledged all over the world. From the previous period I will deal with the fate and the works of five scientists.