Over the past few years, cosmologists have been able to place strong constraints on the densities of dark matter and dark energy, despite the fact that their nature is still unknown. One of the researchers objectives is to establish precise maps of the distribution of dark matter in and between gala

At the end of the 14th century, Europe suffered one of the greatest cataclysms in its history:the second pandemic of the Black Death. Called the Black Death, this pandemic will decimate more than half of the European population. To better understand the arrival and evolution of the bacterium respons

According to the standard cosmological model, the age of the Universe is estimated at around 13.8 billion years. This estimate was obtained thanks to the combination of several measurement methods based in particular on the study of the cosmic microwave background and the acceleration of the expansi

At first glance, medicine and astrophysics have no obvious links. However, in several situations, the technologies developed for the second have benefited the first. For example, breast cancer detection algorithms have been improved thanks to the photonic algorithms used by certain telescopes. And r

While the predictions of modern theories in particle physics reach ever higher energy levels, physicists are thinking about solutions to increase the power developed by particle accelerators. The simplest solution would undoubtedly be to build a new collider on Earth which would be the successor to

The Earth is a spheroid. This fact has been known to man for hundreds of years and was definitively confirmed with the launch of the first artificial earth satellite Sputnik 1 in 1957 by the Soviet Union. Since then, data, observations and images on this subject have accumulated by the hundreds of t

Terrestrial sunsets are certainly one of the most beautiful sights we can witness on our planet. Dotted with pink, orange and yellow, these events are a riot of colorful shades that delight many photographers and observers. But sunsets are not unique to Earth, and they can be observed from other per

The geomagnetic field is generated by convective movements taking place in the Earths core. This magnetic field envelops the Earth in a protective shield against cosmic rays, and in particular the fluxes of charged particles that are continuously projected by the Sun (solar winds). However, there is

While the vast majority of stars observed by scientists are grouped within galaxies, some of them, called intergalactic stars, are gravitationally unrelated to any galaxy. These individual stars may be at a greater or lesser distance from Earth. Who currently holds the distance record? The record

Within galaxies, powerful streams of energetic particles move, generated by the stellar winds of massive stars or by the gravitational effects of supermassive black holes; they are galactic winds. In some galaxies where the rate of star formation is high, winds emanating from supernovae can collide

In the case of Type Ia supernovae, a white dwarf in a multiple system has accreted enough material to exceed critical mass and initiate nuclear reactions as it gravitationally collapses. The result is a spectacular explosion with complete disappearance of the white dwarf. However, in some cases, it

Scientists have developed an innovative method to target cancer cells, by administering a rare metal that is largely native to meteorites. Iridium, a heavy metal found in small quantities in meteorites, is even less present on Earth, the majority being close to the Earths core. Its detection in h

The cosmic catalog contains many objects, including superbubbles. These are cavities extending over several hundred light-years and filled with extremely hot atomic gases, heated to several hundred million degrees. They form in the interstellar medium, sculpted by stellar winds and supernova explosi

Since man has mastered the technologies allowing him to access space, many objects (mainly satellites) have been sent into orbit around the Earth to fulfill different missions. The multiplication of these objects in low Earth orbit (OTB) increases the risk of collisions between them, leading to the

In the Standard Model, translation, rotation and parity correspond to three fundamental symmetries to which elementary particles are subject. Among the four elementary interactions, only the weak interaction violates parity symmetry (P symmetry). However, the P symmetry can be restored as fundamenta

The dynamics of the Universe and its organization currently remain an enigma for cosmologists. In particular, the propensity of the Universe to maintain a certain structural balance against thermodynamic entropy remains an unresolved paradox. Ludwig Boltzmann proposed that this organization originat

With the rise of space exploration, the question of interplanetary contamination naturally arose, and scientists as well as institutions had to look into the problem in order to develop protocols to avoid any risk. Indeed, it is not impossible that a spacecraft (probe, manned spacecraft, etc.) launc

Astrolinguistics, xenolinguistics, or even exolinguistics, is the field of linguistics research that strives to determine and develop models of non-human (extraterrestrial) languages ​​in the event of a first contact with an extraterrestrial civilization intelligent would be performed. Since such an

Mans ambitions for space colonization did not stop with the end of the Apollo missions. If since then no human has been sent to deep space, today several manned missions are again under development, with the Moon and Mars as main destinations. But scientists are thinking about the longer term and ha

According to Heisenbergs principle of indeterminacy, the quantum vacuum is a bubbling chaos, giving rise to permanent quantum fluctuations. According to some physicists, quantum fluctuations of sufficient magnitude could bend light, creating a quantum gravitational microlensing effect. Since the