#coronae

CompulsoryAccount7746CA7746@masto.ai
2026-03-12

Phys.org - #Thunderstorms conjure ghostly #coronae in treetops, observed outdoors for the first time

"charge of a thunderstorm overhead induces an opposite charge in the ground below. That ground charge, attracted to the one above, travels toward the highest point it can reach … glows lasted up to 3 seconds, often hopping from leaf to leaf.

'It'd probably look like a pretty cool light show, as if thousands of UV-flashing fireflies descended on the treetops.'"
phys.org/news/2026-02-thunders

Two close-up photos of green spruce tree clippings in a lab, given an electric charge. Purple light is concentrated on the top dozen needle tips. The left photo has a purple ray shooting out a short distance from each tip. The right photo has stubby purple cones on the tips. It's primarily UV, but human eyes can see visible emissions in a very dark lab.
2025-05-31

🪐 Sur Vénus, d’étranges structures géologiques intriguent les scientifiques depuis 40 ans : les coronae. Pas des cratères, pas des volcans… mais peut-être un peu des deux ? Une étude relance le débat sur leur origine tectonique. 👀🌋
🔗 lefigaro.fr/sciences/sur-venus

John Vaccaro (johniac)johniac
2025-05-15
2024-03-13

[@IRAP #Seminar] this Thursday at 11am. Benjamin Crinquant, a young researcher at IRAP, will present the progress we have made in our knowledge of #BlackHoles: from the observations carried out by the #GRAVITY and #EventHorizonTelescope collaborations to the most recent models of the #magnetospheres and #coronae of black holes.

Details+ : irap.omp.eu/event/kinetic-plas

Image of a black hole
2024-03-07

Schaut diese Jahr öfters in den Nachthimmel (Frühjahr bis September). Dort könntet ihr einen grell Leuchtenden #Stern - #Nova T #Coronae Borealis sehen.

Die letzte Nova war vor 77 Jahren. Das Ereignis wird nur wenige Tage zu sehen sein. Ein Fernglas ermöglicht es den ganzen Lichtwechsel zu beobachten.

>Wenn ein weißer Zwerg genug Material von seinem Begleitstern erhalten hat, zündet die #Kernfusion auf seiner Oberfläche und es kommt zu Explosionen – eine Nova entsteht<

srf.ch/radio-srf-1/nova-t-coro

Client Info

Server: https://mastodon.social
Version: 2025.07
Repository: https://github.com/cyevgeniy/lmst