spaceflight,

The troposphere contains 75–80 per cent of the mass of the #atmosphere. The height varies between 17km at the equator and 7.0km at the poles https://en.wikipedia.org/wiki/Atmosphere#Earth

Picture : :ccby: :cc_sa: https://commons.wikimedia.org/wiki/File:Earth%27s_atmosphere.svg

image/png

spaceflight,

"Above 30 km is too high for 🎈and too low for 🛰️. Some refer to it as the -o-sphere. We know it has large implications on models and 🌪️ models." https://arstechnica.com/science/2023/04/a-new-zealand-company-has-started-flying-a-rocket-powered-spaceplane

Picture : :ccby: :cc_sa: https://commons.wikimedia.org/wiki/File:Atmosphere_structure-en.svg

spaceflight,

#WashingtonPost 📆 February 12, 2022 A #SolarStorm caused #Earth’s #atmosphere to inflate, or puff out.

Think of Earth’s atmosphere like a bicycle tire. When the first solar storm hit, its #magnetic 🧲 field drove currents that caused Earth’s upper atmosphere and particles to move in one direction. When the second surprise solar storm hit, it was oriented in such a way as to cause the motion of Earth’s upper atmosphere to reverse direction. The friction and energy of the two opposing forces released heat in quantities more than models had anticipated https://www.washingtonpost.com/weather/2022/02/12/spacex-starlink-explainer-storm-sun/

spaceflight,

The #Sun’s ☀️ activity has already surpassed the forecast, reaching levels not seen in 20 years, and #solar maximum 📈 may arrive within the next year, months ahead of its presumed schedule. At peak activity, the Sun more often unleashes particle storms that crash into #Earth, threatening #satellites 🛰️ , jamming #radio transmissions, and overloading #power 🔌 grids. Because the previous cycle was unusually mild, “We’ve been lulled into a false sense of #complacencyhttps://www.science.org/content/article/peak-solar-activity-arriving-sooner-expected-reaching-levels-not-seen-20-years

#SpaceWeather #SolarStorm

spaceflight,

#Reuters #Evidence of the largest-known #SolarStorm 14,300 years ago, one that might have fried #satellites 🛰️ and knocked out #electricity 🔌 grids had it occurred today https://www.reuters.com/science/huge-ancient-solar-storm-revealed-by-tree-rings-french-alps-2023-10-09/

spaceflight, (edited )

#Computer errors 🐞 from #OuterSpace from a vote-counting machine that added thousands of non-existent votes to a candidate's tally, to a commercial #airliner ✈️ that suddenly dropped hundreds of feet mid-flight ⤵️, injuring dozens of passengers. A pacemaker's ❤️ built-in computer data got corrupted mid-flight. A group of researchers investigated more than 2,000 bit errors logged by a #satellite 🛰️ over roughly two years in #orbit. A huge number of the errors were clustered in an area called the South Atlantic Anomaly. According to #Nasa, #astronauts 👨‍🚀 on the #SpaceShuttle used to notice that their #laptops 💻 sometimes crashed when the space shuttle passed through the #SAA https://www.bbc.com/future/article/20221011-how-space-weather-causes-computer-errors

#SpaceWeather #SolarStorm #CosmicRays #RadiationProtection

spaceflight,

#NASA 📆 Mar 30, 2023 #DAGGER can predict geomagnetic disturbances worldwide, 30 minutes ⏱️ before they occur. The risk of #geomagnetic storms and devastating effects on our society is presently increasing 📈 as we approach the next “solar maximum” ☀️ https://www.nasa.gov/science-research/heliophysics/nasa-enabled-ai-predictions-may-give-time-to-prepare-for-solar-storms

Image : https://sdo.gsfc.nasa.gov/gallery/potw/item/492

#SolarStorm #RadiationProtection

spaceflight,

#UCAR* : #SpaceWeather 🌌 prediction 🔮 is still very challenging, and researchers are currently exploring ways to increase the amount of lead time ⏱️ before a #SolarStorm reaches Earth. Effects of #geomagnetic storms can last ⏳ for several days. #SpaceWeather can also interfere with electrical #PowerGrids ⚡ on #Earth. https://scied.ucar.edu/learning-zone/sun-space-weather/what-space-weather

Picture : #NASA Heliophysics missions https://science.nasa.gov/heliophysics

spaceflight,

🌌 "#SpaceWeather is in its infancy, and an international effort is working towards developing a robust forecast system. We are in a race against time ⏱️, since we cannot know when the ‘perfect storm’ may occur – and it seems as if we are overdue a large event."

What space weather does (4:25, power grid at 5:30) https://youtu.be/wEs1Q8geNNc?t=265&feature=shared

Dr Huw Morgan leads the #SolarSystem Physics group at Aberystwyth #University 🗺️ https://graphhopper.com/maps/?point=Aberystwyth+University+Penglais+Campus

spaceflight,

Thursday's flare temporarily disrupted radio 📻 communication on #Earth for a couple of hours, with multiple #pilots 🛬 reporting #communication problems.

#SolarFlares ☀️ are powerful bursts of energy known to impact electric #PowerGrids, #navigation signals, radio #communications and can pose risks to #spacecraft and #astronauts 👩‍🚀. https://www.bbc.com/news/av/world-67734790

spaceflight,

📆 December 31 2023 : Most potent eruption the ☀️ has produced since 📆 2017. The new window for maximum 📈 will be between 📆 January and October 2024 https://www.forbes.com/sites/jamiecartereurope/2024/01/01/2023-ends-with-strongest-x-class-solar-flare-for-six-years-get-ready-for-aurora/

spaceflight,

Delaying crewed #Moon landings into the late 2020s could increase the chances that lunar #astronauts 👩‍🚀 will be exposed to more extreme #SpaceWeather ☢️ and its damaging effects. While extreme storms are less likely between now and 📆 2026, the #researchers say, the interval between 2026 and 📆 2030 will carry a higher likelihood of big events that mission planners may have to consider. https://www.astronomy.com/observing/could-hazardous-space-weather-threaten-nasas-artemis-program/

#Artemis #RadiationProtection

spaceflight,

"Human judges can show mercy. But against the laws of #nature ☢️, there is no appeal" https://en.wikiquote.org/wiki/Arthur_C._Clarke

spaceflight,

Advance notice ⚠️ of events is critical to rerouting of high latitude flights ✈️, and to alert in flight of possible loss of communications 📶 https://www.metoffice.gov.uk/weather/learn-about/space-weather/impacts

nyrath,
@nyrath@spacey.space avatar

@spaceflight

"Stupidity cannot be cured. Stupidity is the only universal capital crime; the sentence is death. There is no appeal, and execution is carried out automatically and without pity."

Robert Heinlein

spaceflight,

@nyrath Men are born ignorant, not stupid; they are made stupid by education. One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision. https://en.wikiquote.org/wiki/Bertrand_Russell

spaceflight,

📆 December 22, 2023 “NASA and its contractors still face multiple challenges with development”, the #GAO found in a recent audit of the #Artemis mission. As a result, takeoff 🚀 “is unlikely to occur in 2025.” The GAO’s auditors project a launch date in early 📆 2027.
Various complications can thwart on-time air travel from one city to the next, but that’s nothing compared with moving a crew of people 238,855 miles away to an #inhumane environment.
In 📆 August 2021, #NASA’s Office of Inspector General documented #spacesuit development delays https://www.washingtonpost.com/politics/2023/12/22/nasa-artemis-moon-delay-gao-report/

spaceflight,

In this case, part of the shield 🛡️ that protects 🌏 from the formidable dangers of 🌌 was restored, keeping the planet and its inhabitants safe awhile longer from the deadly ☠️ the ☀️ would otherwise send our way https://www.nytimes.com/2023/11/14/science/gamma-ray-burst-ozone-depletion.html

spaceflight,

From #satellite 🛰️ imagery for monitoring 👀 vast forest areas to #GPS 🧭 systems essential for precise data collection and effective communication, technology is at the heart of contemporary #forest 🌲🌳 management. Beyond technological disruptions, #solar ☀️ superstorms could also have a profound impact on the ecological balance within forest ecosystems. The #downtime ⛔ in forest management and conservation efforts, coupled with the potential #ecological impacts, could have far-reaching consequences for the global economy 〽️ https://forestry.com/editorial/the-hidden-threat-of-solar-superstorm-a-forestry-perspective/

Picture : #Aurora over the forest https://commons.wikimedia.org/wiki/File:Aurora_over_the_boreal_forest_(57be20e1-a3cf-453e-9632-2d38df39b643).jpg

#SolarStorm
#RadiationProtection

spaceflight,

#SpaceWeather events

#SolarStorm of 📆 1859 (#Carrington Event) caused widespread disruption of telegraph 🗼 service.
• Aurora of 📆 1882 disrupted telegraph 🗼service.
• 📆 1921 geomagnetic storm disrupted telegraph 🗼service and damaged electrical 🔌 equipment worldwide.
#SolarStorm of 📆 1972, a large #SEP ☀️ event. If #astronauts 👨‍🚀 had been in #space 🌌 at the time, the dose could have been life-threatening ☠️.
• 📆 1989 geomagnetic storm included multiple #SpaceWeather effects: SEP, CME, Forbush decrease, ground level enhancement, geomagnetic storm, etc..
• 📆 2000 Bastille Day event coincided with exceptionally bright aurora.
• 📆 2002, the Nozomi #Mars Probe was hit by a large SEP ☀️ event that caused large-scale #failure. The mission, which was already about 3 years behind schedule, was abandoned in December 2003.
• 📆 2003 Halloween #SolarStorms, a series of coronal mass ejections and solar flares in late October and early November 2003 with associated impacts
https://en.wikipedia.org/wiki/Space_weather#Notable_events

Coronal mass ejection https://commons.wikimedia.org/wiki/Category:Coronal_mass_ejection

spaceflight,

deleted_by_author

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  • spaceflight,

    Recent auroral displays have been observed from northern #US
    🇺🇸 to southern #Europe 🇪🇺. Currently, the sun ☀️ is experiencing a solar cycle, predicted to peak in 📆 2024, and we may expect enhanced 📈 solar activity in the coming years https://www.forbes.com/sites/davidbressan/2023/12/03/extreme-geomagnetic-storms-may-be-more-frequent-than-previously-thought/

    #SolarStorm

    spaceflight,

    🌌 📆 15 December 2023 EXTENDED WARNING: Geomagnetic K-index of 4 expected
    ⚡ fluctuations can occur.
    may be visible at high latitudes such as 🇨🇦 and 🇺🇸.
    https://www.spaceweatherlive.com/en/reports/noaa-swpc-alerts-watches-and-warnings.html

    spaceflight,

    📆 December 15, 2023 Today's flare "caused a deep shortwave radio 📻 #blackout over the #Americas". We could see more #solar action soon, for the #sun ☀️ is getting more and more active these days. https://www.scientificamerican.com/article/sun-unleashes-most-powerful-solar-flare-since-2017

    #SpaceWeather

    spaceflight,

    A period of high activity on the #Sun ☀️, known as #SpaceWeather or #SolarStorms, can affect technology 💻 on #Earth and #astronauts 👩‍🚀 in #space. On Earth #solar storms can disrupt #satellites 🛰️ and also different forms of #electronic devices, such as #phones 📱. https://www.bbc.co.uk/newsround/67705788

    #infrastructure #RadiationProtection

    spaceflight,

    #NOAA could do more to address challenges like creating “#operations-ready” research data. The Compact Coronagraph #SpaceWeather instrument is scheduled for launch next April, the #SWFO mission in early 📆 2025. “We want to get to a resilient posture, and that’s going to take another 10 years to get there” https://spacenews.com/agencies-sign-agreement-to-collaborate-on-space-weather-activities/

    spaceflight,

    One hundred amperes is equivalent to the electrical service provided to many households 🏠. Currents ⚡ this size can cause internal damage in the components, leading to large scale power 🔌 outages. In addition to electrical failures, #communications 📱 would be disrupted on a worldwide scale. #Internet 📶 service providers could go down. One other area of disruption that would potentially affect everyday life is #navigation 🧭 systems https://www.astronomy.com/science/a-large-solar-storm-could-knock-out-the-internet-and-power-grid-an-electrical-engineer-explains-how/

    #US Department of Energy - #Geomagnetic Storms and Long-
    Term Impacts on #PowerSystems https://www.pnnl.gov/main/publications/external/technical_reports/PNNL-21033.pdf

    #SpaceWeather #SolarStorm

    spaceflight,

    As #SpaceCompanies set records for #launches 🚀 and #satellites deployed, #scientists 👩‍🔬 are starting to quantify the potential effects. The exact amounts of soot emitted by different #rocket engines used around the globe are poorly 🤔 understood. #SpaceX’s future rocket #Starship, for example, uses a mix of liquid #methane and liquid oxygen propellants. Once #satellites 🛰️ in #LEO reach the end of their operational lifetimes, they plunge through the #atmosphere and disintegrate, leaving a stream of #pollutants in their wake. #Scientists 👨‍🔬 do not yet know how this will influence #Earth’s 🌍 #environment https://www.nytimes.com/2024/01/09/science/rocket-pollution-spacex-satellites.html

    Tergenev,
    @Tergenev@mastodon.social avatar

    @spaceflight
    starship burns methane.
    CH4 +2 O2 —> CO2 + 2 H2O
    No soot. Carbon dioxide and water. But no soot.

    spaceflight,

    @Tergenev I know https://everydayastronaut.com/rocket-pollution. The problem is to shorten an article's main topic to a couple of sentences (here it's "we haven't a clue what launches do to the upper atmosphere"). One of the examples was soot (and that doesn't produce any)

    spaceflight,

    #Satellites 🛰️ provide essential observational #atmospheric details.The #weather ⛅ models are just mathematical simulations churned through a computer 💻. Data is ingested, digested and the plumes of atmospheric possibilities then projected. They never should be interpreted by the public as the definitive forecast https://www.washingtonpost.com/weather/2022/01/21/forecasts-weather-model-limitations/

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