Carly Sagan

@carlysagan
1.9K Followers
752 Following
1.8K Posts
Universe Breaker ☄️💔
Solar max is here!
Anti-Starlink!!! Don’t take our stars!!! ❌🛰
The Universe is plasma ☄️
Earthism > individualism 🌎
Diversity = Innovation!!
The space industry is unsustainable!!🚨
wHaT wOuLD SAgaN dO?
https://www.ready.gov/space-weatherhttps://www.ready.gov/space-weather
To me “detrimental” means disastrous. Right? Did anyone see them use this on the slides for the public before?
SWPC is still saying “detrimental impacts” for tomorrow. CMEs too slow. I checked the G4 slides from last year and they didn’t say that. Do they mean sudden loss of GPS forever? Well, there’s always a risk of that. Or did they change the language because of the megaconstellations? I guess it’s that and we’re gonna find out how many satellites literally make impact?
But yeah, it just takes a few solar particles in the wrong places to lose GPS. And all of our modern civilization is built on that. How dumb is that???
I survived the snow-pocalypse (it was horrifying), but the aurora came out!
But this is kind of funny - the neighborhood cats love visiting my cat so much that even in freak snow conditions they are coming over here at night just to talk to him through the window lol
I heard something in the news about a new astronomical observatory in Iceland and I got excited for a split second (because we basically don’t have an observatory at all). Turns out the new “observatory” is actually… a log wall and a bench?? Ok, then. Will someone please just give me the funding to start science in Iceland???
https://www.gardabaer.is/mannlif/felagslif/vidburdir/stjornugerdid-i-heidmork-tekid-i-notkun
Stjörnugerðið í Heiðmörk tekið í notkun

Nýtt og glæsilegt stjörnugerði í Heiðmörk í Garðabæ, í nágrenni við Búrfellsgjá, verður tekið formlega í notkun 21. október klukkan 19:30. Athugið breyttan tíma: upphaflega stóð til að afhjúpa stjörnugerðið 14. október en vegna óhagstæðrar veðurspár til stjörnuskoðunar hefur viðburðinum verið frestað um viku.

Garðabær
Things have been non-stop bad news for me. The only things getting me through are cats, pastries, little walks, and aurora
Since there's been another landfall, heads-up, space debris is about to be a very lethal part of the weather system: https://www.nature.com/articles/s44453-025-00007-8
Uncontrolled reentry of Low Earth Orbit Decaying Objects: a hidden threat to global safety and legal frameworks - npj Space Exploration

This study investigates the dynamics of uncontrolled Low-Earth Orbit Decaying Objects (LEODOs) using a high-fidelity simulation framework that incorporates real-time atmospheric winds (NRLMSISE-00), variable drag from wind-relative motion, Coriolis effects, and Earth’s geopotential up to the sixth zonal harmonic (J6). Unlike previous models, our approach resolves fine-scale thresholds in reentry behavior. We identify a narrow transition regime near escape velocity (e.g., 10.5 km/s), where small changes in elevation angle (Δγ ~ 0.1°) produce distinct outcomes: impact, atmospheric skipping, or orbital retention. For azimuths of 135° and 315°, the reentry threshold is γ = −2. 9°. In some cases, impact occurs in under 10 min, within the uncertainty margins of current forecast systems. These findings reveal limitations in deterministic reentry prediction models and support the need for probabilistic approaches to account for trajectory sensitivity. The results have implications for forecasting, space safety, and international response planning.

Nature

RE: https://mastodon.social/@sundogplanets/115345354063132126

"Sunlight as a service" has got to be one of the dumbest things I've heard. What's next? "Oxygen as a service" and we have to pay to breathe???

Ok, this is too cute not to share - a large family of polar bears made a home out of an old polar science research station! Maybe this will help protect them in cold weather and then the science there helped the bears long after it ended **you must see this adorable footage!
https://www.ruv.is/frettir/erlent/2025-10-08-isbirnir-hafa-gert-sig-heimakomna-i-yfirgefinni-rannsoknarstod-455625
Ísbirnir hafa gert sig heimakomna í yfirgefinni rannsóknarstöð - RÚV.is

Hópur ísbjarna hefur gert sig heimakominn í yfirgefinni rannsóknarstöð á Kolyuchin-eyju austur af Rússlandi. Ljósmyndari náði drónamyndum af dýrunum, sem virtust ekki kippa sér mikið upp við það.

RÚV