Discover and read the best of Twitter Threads about #auroras

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Our new paper: »The sun was darkened for 17 days« (AD 797). An Interdisciplinary Exploration of Celestial Phenomena between #Byzantium, #Charlemagne, and a #VolcanicEruption. #MedievalWorlds 17/2022: doi.org/10.1553/mediev… (1/9)
#Byzanzforschung, @imafo_oeaw
The blinding of the #Byzantine Emperor Constantine VI in #Constantinople in August 797 CE and his overthrow by his mother Eirene was used as legitimation for the #coronation of the Frankish King #Charlemagne as emperor of the Romans on 25 December, 800. (2/9)
@imafo_oeaw
In #Byzantine sources, Constantine VI´s #blinding was linked with a spectacular #celestialmanifestation of divine disapproval: “The #sun was darkened for seventeen days and did not emit its rays so that ships lost course and drifted about.” (3/9)
#Byzanzforschung
Read 10 tweets
The Sun spewed out two consecutive coronal mass ejections on August 14-15, giving rise to a 'Cannibal CME'.

The scarier part? It's heading towards the Earth this week & could spark strong geomagnetic storms on Aug 18!

Read: weather.com/en-IN/india/sp…

By: @ashmitagupta_21

🧵👇
A cloud of dark plasma erupted on the solar surface on Aug 14, launching a #CME that could side sweep the Earth's magnetic field.

Then, on Aug 15, an exploding magnetic filament launched another CME right at its tail.
This could be a Cannibal CME event where the second CME might overtake and gobble up the first, creating a mish-mash of the two.

Cannibal CMEs contain tangled magnetic fields and compressed plasmas that can spark strong geomagnetic storms.

📽️: Animation by Walt Feimer/NASA
Read 7 tweets
Eyección de #MasaCoronal e intensa #Llamarada Solar☀️clase X1 registrada por SDO🛰en Oct.28. Radiación de #Llamarada causó algunos problemas en señales de radio en Sudamérica. Partículas cargadas de Eyección arribarán a Polos mañana: #Auroras pronosticadas!blogs.nasa.gov/solarcycle25/2…
Las llamaradas, eyecciones de #masacoronal, y la emisión de #vientosolar son parte de la normal actividad solar transiente.
Read 7 tweets

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