X-ray emission from cosmic sources indicates that these sources are heated to temperatures exceeding a million degrees. These observations greatly impacted our understanding of the physics governing the evolution of structures across the universe.
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Understanding the nature of the main constituents of the universe is crucial to obtain a precise description of the way in which it reached its present state.

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In this article, we summarise several of the most well-known astrophysical scenarios, and offer a brief description of what we currently know about them.
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We see the sky and admire its regularity and stability, its apparent immutability. We have always done so; it does not come as a surprise, since humans have always been startled by any change in the sky, associating it with omens or the mood swings of gods. At that time, they might call these changes «new stars», even if they were, for example, a supernova explosion, as in the case of Tycho’s supernova in the sixteenth century.
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Each domain of knowledge has its own language, content and method. They give it character, and whenever a field of knowledge advances, it is thanks to one of them. Language

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Venereal diseases were a heavy burden in the early twentieth century. Syphilis was the paradigm of physical and psychological degeneration, the destroyer of family and society, and the syphilitic individual was

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In the eighteenth century, the metre, its multiples and decimal submultiples cornered the cumbersome use of sexagesimal systems, still valid until then.
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Ideology

The myth says that science has no ideology. Perhaps science doesn’t, but scientists certainly do. And this is even clearer with lay people, who do not suffer consequences for the

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Deglutition is the physiological process through which the alimentary bolus is transported from the mouth to the stomach.
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ABSTRACT Unlike the case of Galileo, the Catholic Church has managed evolutionism and Charles Darwin’s work with discretion. Among Catholic scientists, some defend a variety of evolutionism which is peppered with

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ABSTRACT At the beginning of the atomic age, Francoist Spain launched an expensive project to develop, research and use nuclear energy. Scientists, the military and high-ranking officials in the administration

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ABSTRACT Science is not «above» politics and ethics: it is intrinsically political, and constantly raises ethical dilemmas. The consequences of evading such issues were made particularly clear in the actions

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Charles Darwin did not adopt any obvious ideology, except perhaps that of anti-slavery. However, his published work, and that of other evolutionists, led to the emergence of social Darwinism.
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ABSTRACT Agreeing that there are often strong connections between fields of science and the ideological convictions of those producing the science, this essay shows that the connections are often complex and

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Interference

Knowledge without conscience is but the ruin of the soul», François Rabelais wrote. With this famous sentence, the French writer warned about the danger of letting ourselves be carried away

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I write this article in the midst of a controversy among Spanish scientists regarding an alleged fraud in the works of one of them. If the accusations were true, published

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Recognising our reflection in a mirror is fundamental to everyone, although, rather than being something which is automatic from birth, it is something we learn as part of a process,

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Jocelyn Bell

[vc_row][vc_column][vc_column_text] The day 11 February 2016 will be difficult to forget for the members of the Faculty of Physics of the University of Valencia. Three major events took place at

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Rudolf Nieuwenhuys

Rudolf Nieuwenhuys is a worldwide eminence in the field of Neuroanatomy. He has a formal education as a medical doctor, but his view is not at all anthropocentric and he

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120dins-89

Hi ha moltes maneres de divertir-se, però, si es jutja pel calendari de festejos a Espanya, res pot igualar a un excés de morbositat subtilment combinat amb un defecte de compassió.
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119-89 reciclatge

We live in a time, culture and civilisation in which recycling is an educational value for our society, a value added for our everyday habits that should be boosted by

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The main reason for the increase in measles outbreaks and other viral and bacterial diseases in Europe has been the result of the opposition to vaccination.
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112dins-89

In 2007 chaos broke out in some offices of the Government of Chile. An ISA outbreak (infectious salmon anaemia) was detected in the fish farms of the Chiloé Archipelago and

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111-89

En el marc de la teoria general de la relativitat, Einstein va postular l’existència de les ones gravitacionals, encara que pensava que mai es podrien detectar.
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