Explanation: Have you ever seen a dragon in the sky? Although real flying dragons don't exist, a huge dragon-shaped aurora developed in the sky over Iceland earlier this month. The aurora was caused by a hole in the Sun's coronathat expelled charged particles into a solar wind that followed a changing interplanetary magnetic field to Earth's magnetosphere. As some of those particles then struck Earth's atmosphere, they excited atoms which subsequently emitted light: aurora. This iconic display was so enthralling that the photographer's mother ran out to see it and was captured in the foreground. No sunspots have appeared on the Sun so far in February, making the multiple days of picturesque auroral activity this month somewhat surprising.
Nombre total de pages vues
INVENTIONS A L'HORIZON 2050 - La voiture à hydrogène plus forte que l'électrique ?
En 2050, c'est une quasi certitude, la voiture à essence aura fait long feu. Et la voiture électrique est encore loin de pouvoir la remp...
-
2021 May 11 Lightning and Orion Beyond Uluru Image Credit & Copyright: Park Liu Explanation: What's happening behind Uluru? A Un...
-
The Witch Head Nebula Image Credit & Copyright: Digitized Sky Survey (POSS II); Processing: Utkarsh Mishra Explanation: ...