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07/05/2024
SANTé/MEDECINE - Anti-inflamatoires naturels - La gaulthérie pour soulager les tendinites
SANTé/MEDECINE - Homme ou animal qui est le plus fort ? - Haltérophilie
ASTRONOMY - Black Hole Accreting with Jet
2024 May 7
Illustration Credit: NASA, Swift, Aurore Simonnet (Sonoma State U.)
Explanation: What happens when a black hole devours a star? Many details remain unknown, but observations are providing new clues. In 2014, a powerful explosion was recorded by the ground-based robotic telescopes of the All Sky Automated Survey for SuperNovae (Project ASAS-SN), with followed-up observations by instruments including NASA's Earth-orbiting Swift satellite. Computer modeling of these emissions fit a star being ripped apart by a distant supermassive black hole. The results of such a collision are portrayed in the featured artistic illustration. The black hole itself is a depicted as a tiny black dot in the center. As matter falls toward the hole, it collides with other matter and heats up. Surrounding the black hole is an accretion disk of hot matter that used to be the star, with a jet emanating from the black hole's spin axis.
06/05/2024
SANTé/MEDECINE - Homme ou animal qui est le plus fort ? - Saut en hauteur
ASTRONOMY - A Total Solar Eclipse from Sliver to Ring
2024 May 6
Video Credit & Copyright: Reinhold Wittich; Music: Sunrise from Also sprach Zarathusra (R. Strauss) by Sascha Ende
Explanation: This is how the Sun disappeared from the daytime sky last month. The featured time-lapse video was created from stills taken from Mountain View, Arkansas, USA on 2024 April 8. First, a small sliver of a normally spotted Sun went strangely dark. Within a few minutes, much of the background Sun was hidden behind the advancing foreground Moon. Within an hour, the only rays from the Sun passing the Moon appeared like a diamond ring. During totality, most of the surrounding sky went dark, making the bright pink prominences around the Sun's edge stand out, and making the amazing corona appear to spread into the surrounding sky. The central view of the corona shows an accumulation of frames taken during complete totality. As the video ends, just a few minutes later, another diamond ring appeared -- this time on the other side of the Moon. Within the next hour, the sky returned to normal.
05/05/2024
SANTé/MEDECINE - Anti-inflamatoires naturels - La lavande : idéale en cas d'otite
SANTé/MEDECINE - Remèdes naturels - Aphtes
ASTRONOMY - A Black Hole Disrupts a Passing Star
2024 May 5
Illustration Credit: NASA, JPL-Caltech
Explanation: What happens to a star that goes near a black hole? If the star directly impacts a massive black hole, then the star falls in completely -- and everything vanishes. More likely, though, the star goes close enough to have the black hole's gravity pull away its outer layers, or disrupt, the star. Then, most of the star's gas does not fall into the black hole. These stellar tidal disruption events can be as bright as a supernova, and an increasing amount of them are being discovered by automated sky surveys. In the featured artist's illustration, a star has just passed a massive black hole and sheds gas that continues to orbit. The inner edge of a disk of gas and dust surrounding the black hole is heated by the disruption event and may glow long after the star is gone.
04/05/2024
SANTé/MEDECINE - Remèdes naturels - Perte de poids
SANTé/MEDECINE - Homme ou animal qui est le plus fort ? - Gestation
ASTRONOMIE - LES PLUS BEAUX ASTRES DE LA VOIE LACTéE - Antiope : l’astéroïde double
Découvert en 1866, (90) Antiope est un astéroïde qui possède la caractéristique d'être binaire . Cela signifie qu'il est constitué ...
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2021 May 11 Lightning and Orion Beyond Uluru Image Credit & Copyright: Park Liu Explanation: What's happening behind Uluru? A Un...
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Extraordinary Solar Halos Image Credit & Copyright : Magnus Edback Explanation: Welcome to the December Solstice, the first...