9 - SCIENCE - JoanMira
La Science sous toutes ses formes/Science in all its forms
Nombre total de pages vues
18/05/2024
SANTé/MEDECINE - Virus et bactéries mortels - Le virus de la rage
ASTRONOMY - North Celestial Aurora
2024 May 18
Image Credit & Copyright: Chirag Upreti
Explanation: Graceful star trail arcs reflect planet Earth's daily rotation in this colorful night skyscape. To create the timelapse composite, on May 12 consecutive exposures were recorded with a camera fixed to a tripod on the shores of the Ashokan Reservoir, in the Catskills region of New York, USA. North star Polaris is near the center of the star trail arcs. The broad trail of a waxing crescent Moon is on the left, casting a strong reflection across the reservoir waters. With intense solar activity driving recent geomagnetic storms, the colorful aurora borealis or northern lights, rare to the region, shine under Polaris and the north celestial pole.
NUCLEAIRE - Comment survivre à une explosion nucléaire ? À quoi cela ressemblerait ?
17/05/2024
ASTRONOMIE - Astres de la Voie Lactée - Mars
SANTé/MEDECINE - Virus et bactéries mortels - Le virus de l’hépatite B, cette MST terriblement infectieuse
NUCLEAIRE - Comment survivre à une explosion nucléaire ? - Comment l'information est divulguée ?
ASTRONOMY - Aurora Banks Peninsula
2024 May 17
Image Credit & Copyright: Kavan Chay
Explanation: This well-composed composite panoramic view looks due south from Banks Peninsula near Christchurch on New Zealand's South Island. The base of a tower-like rocky sea stack is awash in the foreground, with stars of the Southern Cross at the top of the frame and planet Earth's south celestial pole near center. Still, captured on May 11, vibrant aurora australis dominate the starry southern sea and skyscape. The shimmering southern lights were part of extensive auroral displays that entertained skywatchers in northern and southern hemispheres around planet Earth, caused by intense geomagnetic storms. The extreme spaceweather was triggered by the impact of coronal mass ejections launched from powerful solar active region AR 3664.
16/05/2024
SANTé/MEDECINE - Virus et bactéries mortels - Neisseria meningitidis le principal responsable
NUCLEAIRE - Comment survivre à l'explosion nucléaire ? Combien de temps après l'annonce ?
ASTRONOMY - Aurora Georgia
2024 May 16
Image Credit & Copyright: Wright Dobbs
Explanation: A familiar sight from Georgia, USA, the Moon sets near the western horizon in this rural night skyscape. Captured on May 10 before local midnight, the image overexposes the Moon's bright waning crescent at left in the frame. A long irrigation rig stretches across farmland about 15 miles north of the city of Bainbridge. Shimmering curtains of aurora shine across the starry sky though, definitely an unfamiliar sight for southern Georgia nights. Last weekend, extreme geomagnetic storms triggered by the recent intense activity from solar active region AR 3664 brought epic displays of aurora, usually seen closer to the poles, to southern Georgia and even lower latitudes on planet Earth. As solar activity ramps up, more storms are possible.
SANTé/MEDECINE - Virus et bactéries mortels - Le virus de la rage
Grâce aux travaux de Louis Pasteur , la rage a très nettement reculé dans le monde. On dénombre tout de même plus de 50.000 morts humains s...
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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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The Witch Head Nebula Image Credit & Copyright: Digitized Sky Survey (POSS II); Processing: Utkarsh Mishra Explanation: ...