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#atmosphere

6 posts6 participants1 post today

What have I seen / photographed here last night between 21:19 UTC and 21:31 UTC? Pictures from north of Hanover, Germany, looking south.

The color reminds me of a meteor trail rather than a rocket fuel dump. Maybe the long-lasting trail of a late Perseid?

Ideas? Other observations?

Come on, astronomy Mastodon, do your thing 😃

Interesting attempt to obtain direct samples of Earth's atmosphere from 815 million years ago, using bubbles trapped in halite (NaCl salt). Salt is a good host for this, because it doesn't react much with air ingredients. Also, because it's water soluble, it's relatively easy to spot if anything has happened to it since it formed. 🤓 #Geology #Atmosphere #Salt #Evaporites #Proterozoic #OpenAccess
pubs.geoscienceworld.org/gsa/g

A mass of Canadian forest wildfire smoke has been making its way across the Atlantic for the past two or three days.

It's now reached the UK and may well be detectable, as it has been on earlier occasions, this evening. Look for probably quite weak trails high in the sky from around an hour or so before sunset/sunrise and also note if the sunset is unusually reddened.

"#SpaceX just conducted a giant uncontrolled experiment in atmospheric #chemistry. Earlier this year, analysts noticed something strange: #Starlink #satellites were falling out of the sky--a lot of them. What’s going on? In short: routine housecleaning. What’s not usual is the atmospheric fallout."

spaceweather.com/archive.php?v

spaceweather.comSpaceweather.com Time Machine

Hidden cozied up to #Betelgeuse, a bright red #star in the constellation Orion, astronomers may have finally found the giant star’s long-sought companion.

This close-orbiting partner, first postulated over a century ago, matches some predictions and adds another piece to the puzzle of the mysterious supergiant star.

The companion appears to orbit the supergiant at a distance just four times that between Earth and the sun, putting the companion within Betelgeuse’s expansive outer #atmosphere.

#astronomy
sciencenews.org/article/betelg

Blurry astronomical image showing the star Betelgeuse as a bright, orange circular blob against a dark background with a smaller, faint blue spot to the lower left.
Science News · Betelgeuse’s companion star revealed in new imagesRevealed by advanced imaging, the long-sought "Betelbuddy" is much smaller and fainter than Betelgeuse and orbits within the supergiant’s atmosphere.

Sidabriniai debesys virš Lietuvos (2025-07-03)
2025 m. liepos 3 d. sidabriniai debesys nuspalvino Lietuvos padangę įspūdingais raštais ir mėlyna šviesa. Šie aukštutinės atmosferos debesys pasirodo tik vasarą, sutemus ar auštant, kai Saulė apšviečia jų ledo kristalus iš apačios. Tikra vasaros naktų magija.
#NoctilucentClouds #SilverClouds #Lithuania #Sky #Summer #Nature #Atmosphere #GediminasKacerauskasPhotography #NightSky #SkyLovers #Cloudscape