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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
ASTRONOMY - 3 ATs
2024 May 4
Image Credit & Copyright: Yuri Beletsky (Carnegie Las Campanas Observatory, TWAN)
Explanation: Despite their resemblance to R2D2, these three are not the droids you're looking for. Instead, the enclosures house 1.8 meter Auxiliary Telescopes (ATs) at Paranal Observatory in the Atacama Desert region of Chile. The ATs are designed to be used for interferometry, a technique for achieving extremely high resolution observations, in concert with the observatory's 8 meter Very Large Telescope units. A total of four ATs are operational, each fitted with a transporter that moves the telescope along a track allowing different arrays with the large unit telescopes. To work as an interferometer, the light from each telescope is brought to a common focal point by a system of mirrors in underground tunnels. Above these three ATs, the Large and Small Magellanic Clouds are the far, far away satellite galaxies of our own Milky Way. In the clear and otherwise dark southern skies, planet Earth's greenish atmospheric airglow stretches faintly along the horizon.
03/05/2024
SANTé/MEDECINE - Remèdes naturels - La nausée
SANTé/MEDECINE - Homme ou animal qui est le plus fort ? - Saut en longueur
ASTRONOMY - Young Stars, Dark Nebulae
2025 January 10 Young Stars, Dark Nebulae Image Credit & Copyright : Long Xin Explanation: An unassuming region in the constellati...
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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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2021 January 3 A Phoenix Aurora over Iceland Image Credit & Copyright: Hallgrimur P. Helgason ; Rollover Annotation: Judy Schmidt Ex...