Scientific news from August 12, 2022:
In the solar system: when will the sun die? Gaia satellite responses.
- Thanks to data from the European satellite Gaia, we were able to accurately describe the future of our star, up to its transformation into a red giant in 7 billion years.
- The Gaia satellite, launched in 2013, was supposed to map nearly 2 billion stars in our galaxy.
- Our Sun, now 4.57 billion years old, will become a red giant when it is 11.8 billion years old.
In paleontology: Spinosaurus renew their teeth every two months.
- In just two months, these carnivorous dinosaurs can have new teeth ready to chew on their prey.
- Today, fossils of this family of dinosaurs have been found on all continents, and among their remains there are especially many teeth.
- The research team identified “up to three teeth per cell” in the fossil images.
In health: Covid-19: The wave in France continues to decline.
- The wave of Covid-19 in France that began in early June 2022 continues the decline that began a few weeks ago in terms of cases and hospitalizations.
- During the week, the number of hospitalizations decreased (-28%), including only for intensive care (-26%).
- “However, virological and hospital rates (remain) high,” French public health warns, always recommending the use of barrier gestures.
In archeology: traces of the Ice Age have been found in the USA.
- Dozens of fossil footprints were discovered by pure chance in early July in a dry riverbed in the American West.
- Two scientists have unearthed 88 footprints that are over 12,000 years old from Shoshone hunter-gatherers.
- These new fossils join many other finds in the area, including stone tools, evidence of tobacco use, bird bones and more.
Health status: Meningitis: 56,000 young people applied for vaccination in Auvergne-Rhône-Alpes.
- In almost a year, 12 cases of invasive meningococcal B infection with a new variant were detected, including one with a fatal outcome.
- The ARS Auvergne-Rhône-Alpes thus sent “56,000 letters (…) as part of a massive vaccination campaign.”
- The infection causes fever, headache with vomiting, neck stiffness, and red or purple patches may appear.