@thomasfuchs@hachyderm.io"Private industry is much more efficient and faster than NASA"
Time from first concept to first operational flight:
- Saturn V: ~11 years (1957–1968)
- Space Shuttle: ~13 years (1968–1981)
- SLS: ~14 years (2012–2026)
- SpaceX Starship: 21 years (2005–?, no operational flight yet)
¯\_(ツ)_/¯
@publicvoit@graz.socialAmazing video of a blind passenger during a flight:
Remove #cat before flight
https://www.youtube.com/watch?v=J_8mdH20qTQ
Read the
@kexpmusicbot@mastodonapp.uk🇺🇦 #NowPlaying on KEXP's #Early
David Bowie:
🎵 African Night Flight
#DavidBowie
https://philipglass.bandcamp.com/track/symphony-no-12-lodger-iii-african-night-flight
https://open.spotify.com/track/3NXI2XNb5hQ7uOWMZ1Sxfm
@Techmeme@techhub.socialAir Space Intelligence won an $875M, 12-year FAA contract to develop AI tools that map flight trajectories and identify areas of congestion to reduce delays (Allyson Versprille/Bloomberg)
https://www.bloomberg.com/news/articles/20
@jae@mastodon.me.ukIt always bugs me how Jack Ryan mansplains turbulence to the flight attendant.
https://clip.cafe/the-hunt-red-october-1990/if-do-try-get-some-sleep/
@cosmos4u@scicomm.xyzThe 12th test flight of a #Starship was a mixed bag: good lift-off, loss of the booster, Starship limping into orbit, deployments fine, no Raptor relighting, fun reentry, RUD at the very end as planned. See https://skyweek.wordpress.com/2026/05/21/starship-vor-dem-12-test-erster-der-version-3 for maaany more screencaps from the webcast!
@ErikJonker@mastodon.socialAirbus & the cloud.
"European aerospace giant Airbus has lined up on the runway and is pushing the throttles forward as it prepares to evict apps from America. Airbus has named French cloud services provider Scaleway as the destination for some 900 applications, with an initial 70 getting priority onboarding, as it seeks to put critical systems and data under European control."
@cdarwin@c.imWe seek to develop small lighter-than-air vehicles (“aerobots”)
that can be deployed
as-needed by a larger spacecraft
for entering and navigating caves.
To provide omnidirectional maneuverability and minimize downwash, we propose distributed electrohydrodynamic propulsors (“atmospheric ion thrusters”),
which are both completely solid-state and virtually silent.
Electrohydrodynamic thrust is not ideal for power-autonomous flight on Earth.
In favora…
@drgeraint@glasgow.social
@davej@dice.campSigh. This is just “rich people will flee the country if taxpayers stop subsidising them,” but for infrastructure investment. If it’s profitable then they’ll invest—they’ll simply find new loopholes to offset their obligations, and fabricate whole new axes of victimhood to whinge about.
#auspol #renewables
@StephenRees@mas.toFrom The Narwhal
Near Tofino, a push for gold is colliding with efforts to protect a rare coastal ecosystem
Unpublished documents and a helicopter flight into the Tranquil Creek watershed reveal details about renewed exploration at a long-dormant mine, raising concerns about B.C.’s mining laws, water and Indigenous Rights
In February, Canadian mining company Imperial Metals received a permit to explore for gold at the long-dormant Fandora mine site on Vancouver Island’s w…
@kazys@mastodon.socialI do enjoy a good rocket launch and I wish the engineers @… success but Elon is still one of the top existential risks and it’s a relief that there were major issue on the SS flight.
@tokensane@mastodon.me.uk
@deabigt@universeodon.comQantas to Reveal First Project Sunrise Destination, choosing either London or New York as the first city linked to eastern Australia by a non-stop service that would, at up to 22 hours in the air, set a record for the world’s longest scheduled passenger flight. https://www.avianticslabs.com/p/qantas-to-reveal-first-project-sunrise
@netzschleuder@social.skewed.defaa_routes: FAA Preferred Routes (2010)
A network of air traffic routes, from the FAA (Federal Aviation Administration) National Flight Data Center (NFDC) preferred routes database (www.fly.faa.gov). Date of extraction is prior to 2010. Nodes represent airports or service centers, and a directed edge is the preferred route between airport i and airport j.
This network has 1226 nodes and 2615 edges.
Tags: Transportation, Airport, Unweighted
@heiseonline@social.heise.de
@servelan@newsie.socialOne Simple Food Swap Could Cut Carbon Emissions As Much as a Flight Across Europe
https://scitechdaily.com/one-simple-food-swap-could-cut-carbon-emissions-as-much-as-a-flight-across-europe/
@cosmos4u@scicomm.xyzThis is, from #Starship to inspect it from the outside with cameras on its booms - according to https://x.com/SpaceX/status/2057845419523117292 the next launch attempt will be tonight between 22:30 and 0:00 UTC, with a webcast from 21:58 UTC at https://x.com/i/broadcasts/1pKkOykQRgNKj
@marjolica@social.linux.pizzaI was scanning the headlines this morning for pictures of the Musk Starship's latest big bang and disassembly, but there wasn't anything. Seemingly launch was cancelled at the last possible moment and no new launch date set.
What's happened to "move fast and break things"?
https://www.…
@EarthOrgUK@mastodon.energyCrows in the Cemetery on a Hot June Afternoon (2024-06) - Corvids chatting in a green space between a suburban recycling centre and a building site under airport flight path #fieldRecording #London #crows
@fanf@mendeddrum.orgfrom my link log —
Rain of Fire Falling: The crash of American Airlines flight 191.
https://admiralcloudberg.medium.com/rain-of-fire-falling-the-crash-of-american-airlines-flight-191-e17ffc5369e5
saved 202…
@davidaugust@mastodon.onlineYes. It is real. He actually posted it.
(Context: Blue Angels, US Navy precision flight team, flew above beachgoers in Florida and jet wash, the kinetic energy of flight, hit the beachgoers. The flyover is in violation of the law, Navy policy and basic understanding of pilot responsibility for anyone older than 5.)
The flyover: https://yout…
@cdarwin@c.imStarship, the biggest and most powerful rocket ever built, is scheduled to lift off from SpaceX's Starbase site in South Texas today
— the 57th anniversary of the launch of NASA's Apollo 11 moon mission, by the way
— during a 90-minute widow that opens at 6:45 p.m. EDT.
It will be Starship's 13th flight overall and its second mission of 2026.
You can watch Starship Flight 13 live at Space.com,; coverage will begin about 30 minutes before liftoff.
S…
@cowboys@darktundra.xyzCowboys Headlines: Predictions for Dallas, NFC East upgrades, scares https://cowboyswire.usatoday.com/story/sports/nfl/cowboys/2026/07/21/cowboys-headlines-predictions-for-dallas-nfc-east-upgrades-s…
@arXiv_physicsmedph_bot@mastoxiv.pageA simplified reconstruction of Positron Emission Tomography image using Time of Flight simulated data in Gate 10
Marcin Balcerzyk, Santiago Jimenez-Serrano, \'Oscar Pietrzyk, Edwing Ulin-Brise\~no, Marta Freire
https://arxiv.org/abs/2607.20169 https://arxiv.org/pdf/2607.20169 https://arxiv.org/html/2607.20169
arXiv:2607.20169v1 Announce Type: new
Abstract: Background: Ultrafast Time-of-Flight (TOF) information in Gate 10 simulations enables direct 3D PET reconstruction without scanner-specific modeling. Although such picosecond timing is not achievable in current detectors, simulated data allow exploration of idealized TOF regimes and rapid evaluation of prototype PET designs. Methods: The TOF-driven reconstruction assigns each coincidence to its annihilation position using sub-picosecond timestamps, producing voxelized 3D histograms with flexible voxel size and field-of-view selection. The approach operates directly on Gate-sorted coincidences, requires no corrections, and outputs MHD/DICOM images. Timestamp precision (~10^-13 s) enables localization on the millimeter scale. Results: Full 3D images of the simulated INSPIRE PET scanner are generated in under one second. The method resolves 0.25 mm features in point-source studies and 1.2 mm rods in the Derenzo phantom, reproduces ground-truth activity distributions in image-quality tests, and maintains quantitative stability across geometries. Performance reflects the theoretical benefits of ultrafast TOF rather than current detector capabilities. Significance: This fast, geometry-agnostic reconstruction tool supports early-stage PET prototyping, allowing rapid assessment of spatial resolution, sensitivity, and uniformity without implementing complex reconstruction software. It is broadly applicable to any simulated PET system with sorted coincidences and enables systematic exploration of ultrafast TOF performance in a controlled environment.
toXiv_bot_toot
@BBC3MusicBot@mastodonapp.uk🇺🇦 #NowPlaying on BBCRadio3's #MidsummerDreaming
Manu Delago:
🎵 The Silent Flight of the Owl
#ManuDelago
https://open.spotify.com/track/2WF0RUkK32dDYsZ69nHyO8
@stefan@gardenstate.socialUnited Airlines Flight 169 hits light pole into bakery truck while landing at Newark Airport.
https://abc7ny.com/amp/post/united-flight-strikes-light-pole-landing-newark-airport/19030820/
@NFL@darktundra.xyzA trip to remember: Patriots' Caleb Lomu arrives f... https://www.espn.com/nfl/story/_/id/48707492/new-england-patriots-first-round-pick-caleb-lomu-flight-boston-uncle-pilot
@azonenberg@ioc.exchangeAviation / flight sim geeks: There's plenty of flight sims focused on fixed wing airline flying, combat, etc.
But are there any for more technical / specialized operations? I'm picturing "DCS for wildland firefighting and SAR" where you get to pilot a rotary or fixed wing water attack aircraft, land on a lake to refill then dump it on the flank of a fire, hover above a rocking ship to lower a rescue swimmer to it (maybe the latter being a team game with NPC or players…
@cosmos4u@scicomm.xyzICYMI: "The thirteenth flight test of #Starship is preparing to launch as early as Thursday, July 23. The 90-minute launch window will open at 5:45 p.m. CT." So says https://www.spacex.com/launches/starship-flight-13
@danyork@mastodon.socialBoarding a plane in Montreal for a direct flight to Vienna to participate in #IETF126 for the next week! Starting with the Hackathon this weekend where I will be working with the Open Fibre Data Standard (OFDS) - https://ofds.info/
@trezzer@social.linux.pizzaPlaying some Gunvalkyrie for a gameclub. It is quite a bizarre game - but the most bizarre thing is the early 3D controls. Thankfully, you can remap them on a modern Xbox, so my dash button is now A instead of L3 and Y is flipped for right stick camera so left stick doesn’t do regular while right stick does flight mode. It was a rough combo. Slight tweaks to controls would have made this game so much better out of the box.
@netzschleuder@social.skewed.deus_air_traffic: U.S. air traffic
Yearly snapshots of flights among all commercial airports in the United States from 1990 to today. Metadata include passengers, distance, carrier, airport located city, state, and month of the flight.
This network has 2278 nodes and 6390340 edges.
Tags: Transportation, Airport, Unweighted, Metadata, Temporal
@cdarwin@c.imK2 Airways flight KTA1732,
a Boeing 737-400 cargo plane is reported missing
approximately 155 nautical miles
WSW off Karachi, Pakistan.
ADS-B data indicate that the flight departed Sharjah Airport (SHJ) at 15:02 UTC on a flight to Karachi (KHI). It climbed to FL350.
At 16:17 UTC the flight began a right-hand turn climbing, which transitioned into a descent of about 5600 feet, followed by a 7200 feet climb and another descent.
Sources said the crew repor…
@cwensel@fosstodon.orgHaven't had time to blog about it, but I've released a set of skills I use every day to resolve bugs and feed my RDR process with complex features or debt. I pushed them to this repo, ymmv.
https://github.com/cwensel/kata-flight
@servelan@newsie.socialMan accused of slapping Delta flight attendant's buttocks is hit with federal charge
https://thehill.com/homenews/state-watch/5921630-man-accused-of-slapping-delta-flight-attendants-buttocks-is-hit-with-federal-charge/
@rocksongoftheweek@mastodon.worldEver wondered what classic rock would sound like if someone just absolutely went for it with no restraint whatsoever? This week #TheNightFlightOrchestra answer that question, and then some.
Check it out and see what we had to say about the track and the band behind it. Don't forget to follow us as we shine a spotlight on one awesome track from across the world of
@doktrock@toad.socialTo better "see" Precambrian basement geology, an airborne geophysical survey is currently being carried out over eastern North Dakota! USGS with North Dakota Geological Survey NDGS.
Part of the national Earth Mapping Resources Initiative (Earth MRI)
https://www.
@cosmos4u@scicomm.xyzThe new t-zero for the #Starship test flight no. 12 is 23:30 UTC after two (unexplained) delays: independent webcasts are already on at https://www.youtube.com/watch?v=JcNsHf607hU and https://www.youtube.com/watch?v=TBu6JFjt0tk with the official one at https://x.com/i/broadcasts/1YxNrZwwomNxw now scheduled for 22:43 UTC.
@cheryanne@aus.socialTake Flight
Hosts informative, candid, and in-depth chats with pivotal figures who are transforming Australian hip-hop into a truly global proposition...
Great Australian Pods Podcast Directory: https://www.greataustralianpods.com/take-flight/
@BBC6MusicBot@mastodonapp.uk🇺🇦 #NowPlaying on #BBC6Music's #JamzSupernova
Jenevieve, Freddie Gibbs & SALIMATA:
🎵 Flight Risqué
#Jenevieve #FreddieGibbs #SALIMATA
https://open.spotify.com/track/49Xxlgn6sP2hi0es0Xcxxn
@steve@s.yelvington.comRE: https://flipboard.com/@thenewsdesk/business-nbfr4cs7z/-/a-vb_-INiqSlG7UM4p8z9r0Q:a:43591897-/0
"Elevate’s Raiff previously told Fortune that he suspected the flight cancellations were driven b…
@wraithe@mastodon.socialSo I know I’ve mentioned Katee Sackhoff (Starbuck) “rewatching” the 2003 “Battlestar Galactica” for the first time (she’s never seen the show)
In this latest episode (season 1 finale), after the watch, she tries to put on Starbucks flight suit…which she has really failed to store well* 😂
https://youtu.be/J25PrOUWEPc
@primonatura@mstdn.social"Almost half of EU’s busiest flight routes are ‘hard or impossible’ to book on trains – report"
#EU #EuropeanUnion #Trains
@crell@phpc.socialHoly fucking shit, I just looked at airline flight prices for the first time in months.
#IranWar #FuelPrices #FuckTrump
@arXiv_physicsfludyn_bot@mastoxiv.pageReplaced article(s) found for physics.flu-dyn. https://arxiv.org/list/physics.flu-dyn/new
[1/1]:
- Exact results for dissipation and steady creeping flow in three-dimensional chiral active fluids
Laura Meissner-Oszer, Bogdan Cichocki, Jeffrey C. Everts
https://arxiv.org/abs/2510.19658 https://mastoxiv.page/@arXiv_physicsfludyn_bot/115422802755500601
- Pressure beneath a periodic travelling water-wave in constant-vorticity flow over a flat bed
Adrian Constantin, Nicolas Gindrier, Otmar Scherzer
https://arxiv.org/abs/2602.21077 https://mastoxiv.page/@arXiv_physicsfludyn_bot/116130402894456942
- A minimal wake-vortex model explains formation flight of flapping birds
Olivia Pomerenk, Kenneth S. Breuer
https://arxiv.org/abs/2602.22043 https://mastoxiv.page/@arXiv_physicsfludyn_bot/116136202119473646
- Lagrangian Ellipsoid Diagnostics in Rough Two-Dimensional Synthetic Flows: Aspect-Ratio Saturatio...
Michael Chertkov
https://arxiv.org/abs/2605.27606 https://mastoxiv.page/@arXiv_physicsfludyn_bot/116651135705771524
- On the Theory of Bulk Viscosity of Cold Plasmas and Thermodynamics of Alkali-Noble Gas Cocktails
Albert M. Varonov, Todor M. Mishonov
https://arxiv.org/abs/2511.14790 https://mastoxiv.page/@arXiv_physicsplasmph_bot/115581169803088580
toXiv_bot_toot
@Techmeme@techhub.socialAlibaba says it is opening Qwen to third-party AI agents, starting with KFC, Mixue, and others, and Qwen's app serves 100M daily lifestyle services engagements (Iris Deng/South China Morning Post)
https://www.scmp.com/tech/article/3355850/
@Erikmitk@mastodon.gamedev.place“I'll be marveling at the way a tournament intended to highlight our feudal national borders instead can't help but highlight every player whose mom is from one country and dad is from another but they were born in Brooklyn because of a flight regulation issue and now they play for a different third team because that's how the world has always worked.”
YES! Amen to that post. I could quote the entire thing.
@netzschleuder@social.skewed.deopenflights: Openflights airport network
A network of regularly occurring flights among airports worldwide, extracted from the openflights.org dataset. Nodes represent airports, and direction of edge (i,j) indicates a regularly occurring commercial flight by a particular airline from airport i to airport j. Multiple edges may exist between a pair of airports if multiple airlines offer that flight, or if one airline offers multiple such flights each day.
This network has 3214 node…
@cowboys@darktundra.xyzJerry Jones’ unusual take on Cowboys’ overseas trip is hard to ignore https://www.sportingnews.com/ca/nfl/dallas-cowboys/news/jerry-jones-downplays-nfl-travel-fatigue/d41fed61abccca7c29cf381b
@cosmos4u@scicomm.xyzWhile there was no #Starship launch the #SpaceX webcast contained two unexpected segments, one about a vague plan of a space tourist flight - #Starlink Stargaze system described in https://starlink.com/updates/stargaze and https://breakingdefense.com/2026/01/spacex-unveils-stargaze-space-tracking-system/ and https://smallsatnews.com/2026/02/18/spacex-unveils-stargaze-system-to-revolutionize-space-traffic-management/: apparently there are numerous unlisted satellites in LEO which come so close to the Starlinks that cameras on the latter see them as bright objects. How could those objects have been missed by all space surveillance from the ground?
@michabbb@social.vivaldi.net⚡ Concurrent duplicate protection via #Laravel atomic locks — first request acquires lock, duplicate in-flight requests receive 409 Conflict Retry-After: 1 header
📋 Distinct HTTP responses for different failure modes: 400 = missing header, 422 = key reused with different data, 409 = duplicate in-flight request still processing
🔍 Artisan commands for ops: idempotency:list to insp…
@kurt@nelson.funThe Alaska airlines mobile app and website have been like this for days; it seems like they use auth0 under the hood. The subreddit is filled with reports so not just me. If it's not fixed by my flight Saturday I guess I'm going old school paper the whole way.
@vrandecic@mas.toSecond time this year that my flight got cancelled and I get rebooked on a later flight that ultimately arrives sooner due to routing.
I consider myself slightly stressed but rather lucky.
#traveling
@gwire@mastodon.socialApparently this is the first time the UK Public Health Rapid Support Team has packed a microbiology lab into iM3075s and set up elsewhere.
https://ukhsa.blog.gov.uk/2026/05/15/lab-in-a-bag-how-we-took-di…
@ronaldsnijder@mastodon.social
@memeorandum@universeodon.comHabeas Flight Watch: New tool helps track ICE flights to your city (Gillian Brockell)
https://gillianbrockell.com/habeas-flight-watch-new-tool-helps-track-ice-flights-to-your-city/
http://www.memeorandum.com/260529/p30#a260529p30
@mpsgoettingen@academiccloud.social2 years after the stratospheric flight of #SunriseIII, first results are released today in a #SunriseIIIFocusIssue in The Astrophysical Journal Letters:
@netzschleuder@social.skewed.deopenflights: Openflights airport network
A network of regularly occurring flights among airports worldwide, extracted from the openflights.org dataset. Nodes represent airports, and direction of edge (i,j) indicates a regularly occurring commercial flight by a particular airline from airport i to airport j. Multiple edges may exist between a pair of airports if multiple airlines offer that flight, or if one airline offers multiple such flights each day.
This network has 3214 node…
@domm@social.linux.pizza#potd A "black redstart" getting a snack during flight training in our courtyard. https://domm.plix.at/potd/2026-06-02.html
@servelan@newsie.socialUkrainian cadets complete RAF flight training in UK — now moving to jet aircraft instruction - Euromaidan Press
https://euromaidanpress.com/2026/05/09/ukrainian-cadets-complete-raf-flight-training-in-uk-now-moving-to-jet-aircraft-instruction/
@ian@phpc.socialICYMI, the @… CFP is up through the end of the month. We've had a number of solid submissions but want more! Speaker package, including flight to Austin and hotel for folks who need those, applies as in previous years.
https://
@kexpmusicbot@mastodonapp.uk🇺🇦 #NowPlaying on KEXP's #MiddayShow
Flight of the Conchords:
🎵 Business Time
#FlightoftheConchords
https://flightoftheconchords.bandcamp.com/track/business-time-2
https://open.spotify.com/track/6gpF9X9AliEO6f91LJT8Ej
@jtk@infosec.exchangeAs far as I can tell, United Airlines doesn't have any public #IPv6 space.
https://aws.amazon.com/blogs/networkin
@ruari@velocipederider.comTimes flies
#WristCheck #BinaryWatch #Binary
@EarthOrgUK@mastodon.energyCrows in the Cemetery on a Hot June Afternoon (2024-06) - Corvids chatting in a green space between a suburban recycling centre and a building site under airport flight path #fieldRecording #London #crows
@fanf@mendeddrum.orginteresting to compare these seat-back video displays with wikipedia’s history https://en.wikipedia.org/wiki/In-flight_entertainment … in our timeline they weren’t as good as 2001 until some years later iirc
@simoncox@seocommunity.socialWatching with interest!
https://atlantic-explorer.com
@shriramk@mastodon.socialRE: https://mastodon.social/@shriramk/116823979028172318
Our flight is literally being delayed because of security line delays. People still streaming on board a minute after our scheduled departure time. (Glad I arrived at 8:30 for a noon flight…) Quite …
@davidaugust@mastodon.onlineUkraine has used a balloon to launch a strike drone using very little battery, evading russian air defenses and placing the drone 8km (~27067 ft) up and 42km (~25 miles) down range before powering up its own propulsion.
source: https://xcancel.com/visionergeo/status/2057129294980…
@cosmos4u@scicomm.xyzThe Date of #Eilmer of Malmesbury’s Flight: https://academic.oup.com/nq/advance-article/doi/10.1093/notesj/gjag066/8671576 (about a guy allegedly doing gliding flight experiments - and observing Halley's comet - a millennium ago) -> Did a medieval flying monk spot Halley’s comet, twice? It’s complicated: https://arstechnica.com/science/2026/06/did-a-medieval-flying-monk-spot-halleys-comet-twice-its-complicated/ - yeah, right, because the sources are ... tenuous at best.
@seav@en.osm.town @deabigt@universeodon.comUnited Airlines Offers Free Flight Changes for Passengers Avoiding Trump-Named Airport https://aeroxplorer.com/articles/united-airlines-offers-free-flight-changes-for-passengers-avoiding-trumpnamed-airport.php
@cdarwin@c.im⛔️Are fuel-related flight cancellations happening at the last minute?
In most cases, no.
At least for now, fuel-related cuts are often being made days or weeks in advance.
Lufthansa Group, for example, said this week it is cutting 20,000 short-haul flights across its network through October.
That gives you more time to adjust plans than you’d typically get with weather-related disruptions, which tend to trigger last-minute cancellations.
🆘 My flight was canceled.…
@vrandecic@mas.toHeathrow: Boarding starts at 8:40. It may take up to fifteen minutes to walk to your gate. "Please allow enough time to reach your gate." It's 8:44. We're still not telling you what your gate is. May be the famous British humor.
In seriousness, I don't know any airport that announces gates this late. Is this some deal with the shops to keep people around the central concourse?
#lhr
@michabbb@social.vivaldi.net🎯 Where Atlas pulls ahead on core: concurrent tool execution, reasoning/thinking you can configure, stream & persist, pre-flight token counting (incl. tools & images), and batch processing at ~50% cost (OpenAI, Anthropic, Google) — the last two are Atlas-only.
🤖 Agent framework: first-class agent classes, sub-agents with delegation, depth & cycle guards and lineage, plus true-parallel concurrent sub-agents via forking. Prism offers none of this layer; Laravel AI covers part…
@servelan@newsie.socialTrump gets right in reporter’s face on flight from China and calls him ‘treasonous’ over Iran question | The Independent
https://www.independent.co.uk/news/world/americas/us-politics/trump-reporter-treasonous-iran-war-b2977334.html
@Techmeme@techhub.socialAmerican Airlines picks SpaceX's Starlink for in-flight Wi-Fi on more than 500 planes; SpaceX already has contracts with United Airlines, Southwest, and others (Leslie Josephs/CNBC)
https://www.cnbc.com/2026/05/26/american-airlines-spacex-starlink.html
@arXiv_physicsmedph_bot@mastoxiv.pageTheoretical derivation of blood velocity from TOF-MRA based artery centerline
Abrar Faiyaz
https://arxiv.org/abs/2607.16498 https://arxiv.org/pdf/2607.16498 https://arxiv.org/html/2607.16498
arXiv:2607.16498v1 Announce Type: new
Abstract: Time-of-flight magnetic resonance angiography (TOF-MRA) is widely used for structural vascular imaging, but extracting functional hemodynamics like blood velocity typically requires supplementary phase-contrast scans. This study proposes a novel, physics-informed computational framework to extract variable fluid velocity directly from standard TOF-MRA signal profiles. We analytically expand the Bloch equations into Bloch-McConnell flow equations, establishing a mathematical relationship between the spatial decay of longitudinal magnetization and fluid velocity. To validate this derivation and overcome the limitations of constant-velocity assumptions, a MATLAB simulation framework was developed to model fluid flow in two variable-geometry flowing tube cases i.e continuous tapering and focal stenosis -under synthetic scanner noise. A global inverse optimization approach utilizing Dual-Tikhonov regularization was deployed to stably invert the ill-posed transit time integral, actively penalizing high-frequency numerical ringing while preserving structural curve stiffness. The computational sim-ulations successfully recovered ground-truth point-wise velocities, accurately tracking gradual hemodynamic accelerations and sharp stenotic jets. This theoretical framework provides a robust mathematical proof-of-concept that quantitative, localized functional hemodynamic metrics can be extracted from standard structural MRA imaging, estab-lishing a foundation for advanced flow quantification without requiring additional scan time.
toXiv_bot_toot
@davej@dice.camp@… You missed the pearl-clutching in paragraphs 4-6?
“It’s become so normalised that nobody blinks an eye at the sight of people clinking glasses of prosecco at 7am, but Ryanair boss Michael O’Leary has called to ban the practice.
“He claims that almost one flight a day […] is being diverted due to unruly behaviour, which mostly stems from said …
@netzschleuder@social.skewed.deopenflights: Openflights airport network
A network of regularly occurring flights among airports worldwide, extracted from the openflights.org dataset. Nodes represent airports, and direction of edge (i,j) indicates a regularly occurring commercial flight by a particular airline from airport i to airport j. Multiple edges may exist between a pair of airports if multiple airlines offer that flight, or if one airline offers multiple such flights each day.
This network has 3214 node…
@kexpmusicbot@mastodonapp.uk🇺🇦 #NowPlaying on KEXP's #MiddayShow
Flight of the Conchords:
🎵 Business Time
#FlightoftheConchords
https://open.spotify.com/track/6gpF9X9AliEO6f91LJT8Ej
@mpsgoettingen@academiccloud.socialSunrise III Data Release: 2 years after the flight of the balloon-borne solar observatory Sunrise III, terabytes of data are now online and offer a unique view of our star: #Sun
@cosmos4u@scicomm.xyzNASA has selected a mission concept to research how space weather and dynamics within Earth’s atmosphere influence the space environment and help improve prediction capabilities for impacts on crucial technology, such as GPS and low Earth orbit satellites, as well as astronauts in space: #DAPHNE (Dynamic Atmosphere-Ionosphere Explorer) mission will enter Phase B of development, which includes planning and design for flight and mission operations
@deabigt@universeodon.comSeems like a lot of drones are being sighted that aren’t drones. At least they are getting reported and not ignored out of fear of reporting a UFO. Better to misreport a 1000 balloons than have one crash.
United Flight From San Francisco to San Diego Reports Drone Close Call Near Arrival https://ground.news/article/united-flight-from-san-francisco-to-san-diego-reports-drone-close-call-near-arrival_66b58a
@cosmos4u@scicomm.xyz#Ariane 6 flight VA269 – bigger and more powerful boosters (Official broadcast) from 11:20 UTC today: https://www.youtube.com/watch?v=f457U82D6EY (see https://www.esa.int/Enabling_Support/Space_Transportation/Ariane/Watch_live_bigger_booster_more_powerful_Ariane_6_launch for more).
@vrandecic@mas.toOn the flight to Amsterdam I saw this fire from the plane. A big fire that also hazed Amsterdam.
#fire #amsterdam #netherlands
@cdarwin@c.imWally Funk,
aviation pioneer
and oldest woman to go into space,
dies at 87
https://www.theguardian.com/us-news/2026/jul/09/wally-funk-astronaut-dies?CMP=Share_iOSApp_Other
@cosmos4u@scicomm.xyzAnd in #Starship 13 update: "To be confident of a good flight, 2 Raptors will be removed & replaced. Most probable launch timing is early next week."
@netzschleuder@social.skewed.defaa_routes: FAA Preferred Routes (2010)
A network of air traffic routes, from the FAA (Federal Aviation Administration) National Flight Data Center (NFDC) preferred routes database (www.fly.faa.gov). Date of extraction is prior to 2010. Nodes represent airports or service centers, and a directed edge is the preferred route between airport i and airport j.
This network has 1226 nodes and 2615 edges.
Tags: Transportation, Airport, Unweighted
@cdarwin@c.imKristina Knickerbocker, running to flip Ohio’s 10th Congressional District, is an Air Force veteran and nurse who worked multiple jobs to put herself through school.
Sarah Trone Garriott, running to flip Iowa’s 3rd Congressional District, is a minister, a mom, and the daughter of a nurse and an auto mechanic who worked at Walmart, waited tables, and cleaned hotel rooms to pay for college.
Kaela Berg, running for Minnesota’s 2nd Congressional District, is a union flight attendant …
@cosmos4u@scicomm.xyzThe twelfth flight test of #Starship is preparing to launch as soon as Tuesday, May 19: https://x.com/SpaceX/status/2054304050338750931 - the launch window will open at 22:30 UTC.
@netzschleuder@social.skewed.deus_air_traffic: U.S. air traffic
Yearly snapshots of flights among all commercial airports in the United States from 1990 to today. Metadata include passengers, distance, carrier, airport located city, state, and month of the flight.
This network has 2278 nodes and 6390340 edges.
Tags: Transportation, Airport, Unweighted, Metadata, Temporal
@cdarwin@c.im'Everybody is profiting':
Trump dismisses questions about more than $1 billion in crypto earnings
While fielding questions from reporters ahead of his flight to North Dakota today,
Donald Trump rejected questions about the
$1.2 billion he earned from crypto businesses, according to his latest annual financial disclosure.
“We have funds that run my money well. I’ve made a lot of money before I became president,” Trump said.
“They’re big institutions…
@netzschleuder@social.skewed.deopenflights: Openflights airport network
A network of regularly occurring flights among airports worldwide, extracted from the openflights.org dataset. Nodes represent airports, and direction of edge (i,j) indicates a regularly occurring commercial flight by a particular airline from airport i to airport j. Multiple edges may exist between a pair of airports if multiple airlines offer that flight, or if one airline offers multiple such flights each day.
This network has 3214 node…
@cdarwin@c.imThis is only going to change travel around New York for rich people.
Joby says the price of a flight from Manhattan to JFK airport will be about the same as a “premium car service”.
What constitutes a premium car service is up for debate,
but it appears to cost a minimum of $200, compared to $11.75 on public transport.
The Joby might be quieter than a helicopter, but for now, most New Yorkers will be stuck with the subway.
@cosmos4u@scicomm.xyzA daring mission to lift NASA’s sinking Neil Gehrels #Swift Observatory is now one step closer to launch this June: https://science.nasa.gov/blogs/swift/2026/05/08/katalyst-wraps-testing-at-nasa-goddard-for-swift-boost-mission/ and https://www.katalystspace.com/post/katalyst-robotic-spacecraft-passes-testing-milestone - on May 4, Katalyst Space Technologies completed environmental tests of its LINK robotic servicing spacecraft at NASA’s Goddard Space Flight Center in Greenbelt, Maryland; LINK will meet up with Swift and attempt to raise its orbit.
@cosmos4u@scicomm.xyzNSF Green Bank Observatory Shares Images, Data From #ArtemisII Mission: https://public.nrao.edu/news/there-are-4-people-in-those-pixels-nsf-green-bank-observatory-shares-images-data-from-artemis-ii-mission/ - radar signals received by world’s largest fully steerable radio telescope tracked spacecraft with NASA’s communications network for historic lunar test flight.
