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Affichage des articles dont le libellé est ASTRONOMY - The Red Sprite and the Tree. Afficher tous les articles
Affichage des articles dont le libellé est ASTRONOMY - The Red Sprite and the Tree. Afficher tous les articles

18/09/2023

ASTRONOMY - The Red Sprite and the Tree

 2023 September 18

A lone tree is seen on the right of a dark grassy 
field. Above and on the right, a bright red filamentary
glow is seen in the sky. The filaments of this glow 
may seem similar to the branches of the tree.
Please see the explanation for more detailed information.

The Red Sprite and the Tree
Credit & Copyright: Maxime Villaeys

Explanation: The sprite and tree could hardly be more different. To start, the red sprite is an unusual form of lightning, while the tree is a common plant. The sprite is far away -- high in Earth's atmosphere, while the tree is nearby -- only about a football field away. The sprite is fast -- electrons streaming up and down at near light's speed, while the tree is slow -- wood anchored to the ground. The sprite is bright -- lighting up the sky, while the tree is dim -- shining mostly by reflected light. The sprite was fleeting -- lasting only a small fraction of a second, while the tree is durable -- living now for many years. Both however, when captured together, appear oddly similar in this featured composite image captured early this month in France as a thunderstorm passed over mountains of the Atlantic Pyrenees.

ASTRONOMY - Christmas Tree Aurora

 2024 December 23 Christmas Tree Aurora Image Credit & Copyright:  Jingyi Zhang Explanation:  It was December and the sky lit up like a ...