Euclid is an ESA mission to map the geometry of the Universe and better understand the mysterious dark matter and dark energy, which make up most of the energy budget of the cosmos. The mission will investigate the distance-redshift relationship and the evolution of cosmic structures by measuring shapes and redshifts of galaxies and clusters […]
According to the traditional myth, mentioned in passing in the first entry of this series, contemporary philosophy of science would have started in the post-WWI Vienna, when a group of young philosophers and scientists, under the heading of Moritz Schlick, attempted to show how scientific knowledge could be unambiguously derived from observational data (or at […]
Scientists have created the world’s first monkey embryos containing human cells in an attempt to investigate how the two types of cell develop alongside each other. The embryos, which were derived from a macaque and then injected with human stem cells in the lab, were allowed to grow for 20 days before being destroyed. We […]
NASA’s MOXIE creates breathable air on Mars The Mars Oxygen In-Situ Resource Utilization Experiment aboard NASA’s Perseverance rover, known as MOXIE, has successfully extracted about 5 grams of breathable oxygen from the atmosphere of Mars, something that could pave the way for future crewed missions to the Red Planet. Meanwhile, the Ingenuity took its second […]
A silicate is any of a group of substances containing negative ions composed of silicon and oxygen. With this definition it is no surprise that silicates are a huge group. Natural silicates form the mayor component of most rocks, the bulk (90 %) of the Earth´s outer crust and one third of all minerals. The […]
Mental wandering, sometimes referred to as off-task thinking or, colloquially, going on autopilot, is the experience of thoughts not staying on a single topic, but jumping without control from one thing to another. This is particularly striking when we are engaged in a task that requires focus. A common place for mental wandering is when […]
A middle-aged white man raises his sword to the skies and roars to the gods. The results of his genetic ancestry test have just arrived in his suburban mailbox. His eyes fill with tears as he learns that he is “0.012% Viking”. These are the scenes from a video advertisement for the TV-series Vikings. This […]
There was no shortage of T. rexes in the Cretaceous Scientists estimate there may have been about 2.5 billion Tyrannosaurus rexes that lived into maturity during the Cretaceous, dominating the landscape for more than 2 million years. The mathematical model researchers used to reach their estimate is described in Science. Gizmodo Sagittarius A* gives up […]
The standard explanation of superconductivity goes more or less like this. Electrical resistance is due to collisions of the electrons (whether treated as particles or waves) with impurities, imperfections, and especially the lattice vibrations of the metal crystal. The lattice vibrations of the solid will decrease as the temperature falls, because the entropy, which represents […]
Our species, Homo sapiens, rose in Africa some 300,000 years ago. The objects that early humans made and used, known as the Middle Stone Age material culture, are found throughout much of Africa and include a vast range of innovations. Among them are bow and arrow technology, specialised tool forms, the long-distance transport of objects […]