Alzheimer’s disease is the most common form of dementiadementiawhose pathophysiological process begins several decades before the appearance of the first symptomssymptoms. Many factors play a role in the development of dementia, some of which may be modifiable such as sleeping troublessleeping troubles. If dementia and sleepsleep are associated, however previous studies report contradictory results. First
If the presence of liquid water in the past of Mars is no longer in doubt, a new study underlines that we are far from having identified the majority of the lakes having existed on the Red Planet. For some time now, and in particular thanks to data collected by Mars rovers, we know that
If the current Martian conditions no longer allow the establishment of oceans on its surface, it was quite different when the planet was formed. A new study suggests that the primordial atmosphere of the Red Planet was particularly dense, rich in water vapor and dihydrogen. Conditions favoring the very rapid appearance of vast expanses of
Ramses II is perhaps the most emblematic pharaoh of all. It was he who built the most monuments. He was also the one who had the most children. He reigned for no less than 66 years. at theapogeeapogee of the power of Egypt. But at the time of Ramesses II — between 1300 and 1200
Started on September 19 around 8 a.m., the eruption of the Reunionese volcano continues and follows a fairly classic evolution. The activity has stabilized on a few vents around which an eruptive cone begins to build, while the lava flows are spreading towards the southeast. The eruptive flow is modest, but the images are superb,
For these first autumn nights, Jupiter will continue to reign over the sky! The giant planet will be closest to Earth since 1963 this Sunday, September 25, and in opposition on September 26. This is the best time to observe it, with its worlds that revolve around it. On Monday, September 26, the largest planet
Comet C/1995 O1 (Hale-Bopp), a.k.a the Comet Hale-BoppComet Hale-Bopp in short, was observed by James-Webb on July 9, reveals to us the center of the minor planets. The big one cometcomet of 1997”, discovered independently by Alan Hale and Thomas Bopp on July 23, 1995, had not been observed since July 13, 2013. These new
This Monday, September 19, Mexico was hit by a new and powerful earthquake, which notably caused an earthquake crisis further north, in California. The effects of this earthquake were also seen right in the middle of the desert region of Death Valley, generating a tsunami in a flooded cave. Monday September 19, Mexico was shaken
The Hunga Tonga-Hunga Ha’Apai volcano erupted last January. As all underwater volcanoes do, it ejected water vapor into the atmosphere. As do all underwater volcanoes. But in a colossal amount that amazed the researchers. So much so that they are now asking the question of the possible global consequences for the Planet and its climate.
For many years, Enceladus has attracted the attention of scientists as a candidate world for harboring extraterrestrial life forms. New data reinforces the idea that the ocean hidden under the thick layer of ice of this moon of Saturn would be favorable to the development of life. In search of extraterrestrial life, scientists are particularly