How do we measure the expansion of the Universe? To solve the riddle of cosmic expansion, it is essential to understand the tools used by astronomers to determine the Hubble constant (H₀), which describes the rate of expansion of the Universe. Two main methods are employed, each providing different perspectives on cosmic history. The first … Read more

In the Caucasus, a region with a complex and still partially documented history, the discovery of new artifacts often sheds light on forgotten aspects of ancient civilizations. A team of archaeologists affiliated with Tbilisi State University and the National Archaeological Research Center of Georgia have unearthed a basalt tablet engraved with previously unseen symbols. This … Read more

The sky is a land of innovation where sometimes old technologies come back to the forefront. This is the case of the airship, an aircraft whose invention dates back to the 19th century. Somewhat out of fashion today, these devices have nevertheless marked the history of aviation. Today, the largest of them left the factories … Read more

Successful takeoff and mission accomplished in a completely nominal manner for Vega-C. The European light launcher launched at 10:20 p.m. from the European Spaceport in French Guiana, carrying the Sentinel-1C satellite from the Copernicus program in its fairing. One hour and fifty minutes after takeoff, Sentinel-1C was placed into orbit. A success after the failure … Read more

On December 5, 2024, the earth shook off the coast of California, an earthquake which brought back the specter of the earthquake known as the Big One. Even if Man is the dominant species on the planet, he can do nothing against the force of Nature. In the United States, on the West Coast, residents … Read more

“The first ice-free day in the Arctic Ocean could occur before 2030”. Here is the title of a recent study published on December 3, 2024 in the journal Nature communications. Please note, we are not talking about pack ice here, but about sea ice, that which is located on the surface of the oceans at … Read more

A true symbol of a violent split between the conspirators of the assassination of Julius Caesar on one side and his allies on the other, this piece carries a heavy legacy. A choice piece at the auction On December 9 and 10, an auction like no other will take place. One of the objects offered … Read more

The World Health Organization considers air pollution one of the greatest environmental health risks. Several studies have already demonstrated that exposure to ambient air pollution impacts health. It leads in particular to oxidative stress and inflammation. A team from the Harvard TH Chan School of Public Health set out to assess the risk posed by … Read more

This egg, the thirtieth, would have between 70 and 80% chance of hatching according to specialists. A new egg at 74 Midway Atoll National Wildlife Refuge is home to the world's oldest known wild bird, Wisdom, a Laysan albatross. And apparently, the latter is doing quite well. Indeed, the latter was filmed by the US … Read more

Tooth decay, which leads to the progressive destruction of the tooth, is an infectious disease that always develops from the outside to the inside. If left untreated, it can reach dentin, the layer beneath the enamel. At this stage, the tooth becomes painful to certain stimulations such as chewing. The decay is then active and … Read more