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Astronomy Picture from 17/04/2023

ELVES Lightning over Italy

Source: https://apod.nasa.gov/apod/ap230417.htm<a href="/hashtag/ELVES" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#ELVES #UpperAtmosphericLightningi#NightSkyN#RarePhenomenone#SpaceWeathere#Astronomys#RedSpritee#Italye#Lightningi#Science#Science
A stunning photograph of a red ELVES ring, a rare type of upper-atmospheric lightning, captured over Ancona, Italy. The ring, with a radius of approximately 350km, glows red due to excited nitrogen molecules in the ionosphere, caused by an electromagnetic pulse from charged clouds. This ephemeral event lasted only a millisecond and required years of experience and high-speed photography to capture.
April 13, 2025 at 8:17 AM
nasapodsky.bsky.social
Astronomy Picture from 30/03/2021

Red Sprite Lightning over the Andes

Source: https://apod.nasa.gov/apod/ap210330.htm<a href="/hashtag/RedSprites" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#RedSpritesd#NightLightningi#AtmosphericOpticsi#SpaceWeathere#AstronomyPhotographyt#LasCampanasObservatorye#Chiley#AndesMountainso#RarePhenomenah#UpperAtmosphericLightningightning
A breathtaking night-time image captured from Las Campanas Observatory in Chile, showcasing several red sprites – elusive, high-altitude electrical discharges – above the Andes Mountains in Argentina. These fleeting, reddish streaks of light are rarely seen and are believed to be triggered by powerful positive cloud-to-ground lightning strikes.
February 23, 2025 at 4:14 PM