2026-03-17 01:19:01
On Monday the discovery of four new #moons of #Jupiter was announced - #Saturn: https://www.minorplanetcenter.net/mpec/K26/K26F14.html (this brings the known total to 101 and 285, respectively).
On Monday the discovery of four new #moons of #Jupiter was announced - #Saturn: https://www.minorplanetcenter.net/mpec/K26/K26F14.html (this brings the known total to 101 and 285, respectively).
Also from the #LPSC #NASA HQ Briefing: the science riding along on #ArtemisII - I think "verbal descriptions" of the Moon haven't been defined science objectives since the Apollo days.
So my „Made for Siri AI“ iPhone 16 pro is gonna be unable to run the first version of Siri AI that’s coming out.
I mean, it’s unable anyway because I’m in the EU, but sheesh.
So I'm finally figuring out what YouTube was *really* invented for ... bringing you documentaries about the convoluted fates of long gone SF TV shows you had enjoyed decades ago - like #AlienNation: https://www.youtube.com/watch?v=0CQhphu3VjE
A second #LPSC NASA briefing today dealt mostly with planetary science funding details: https://www.youtube.com/watch?v=N8-enBzNwlo
#Elektroauto RANT über führenden Mineralölkonzern in D:
ARAL bzw die Europazentrale des Weltkonzerns BP ist nicht in der Lage eine funktionierende App herzustellen, die man zum Laden benötigt. Ich konnte mich tagelang nicht anmelden, jedes Mal brach der Vorgang nach erfolgreichem Einloggen mit Fehlermeldung ab und man wird vertröstet: "Versuche es noch einmal"
Aufgrund de…
Exploring the Interior Structure of (16) Psyche Through Basin-Scale Collisions: #Psyche: https://news.arizona.edu/news/large-craters-offer-clues-origin-asteroid-16-psyche
@… lt's the best.
A Galactic Transformation - Understanding the SMC’s Structural and Kinematic Disequilibrium: #SmallMagellanicCloud
Ecstatic scenes at the household as Daniel is zooming happily through the apartment because his emotional support millionaire won a race 🏎️
Haltbar bis 2029 am Hintern #SilikonKrümmel
Dynamical Origin of (469219) Kamo‘oalewa of Tianwen-2 Mission from the Main Belt - ν6 Secular Resonance, Flora Family or 3:1 Resonance with Jupiter: #Tianwen2 Mission: http://english.pmo.cas.cn/newsroom/news/202603/t20260317_1152750.html and https://www.chinadaily.com.cn/a/202603/17/WS69b8af2da310d6866eb3e309.html
Preliminary Nucleus Size Estimate for #Kreutz Sungrazer C/2026 A1 (MAPS): https://iopscience.iop.org/article/10.3847/2515-5172/ae5220 -> "JWST imagery of the approaching Kreutz sungrazer C/2026 A1 (MAPS) appears sufficient to distinguish the comet’s nucleus from the surrounding dust. Coma model fitting indicates the morphology is compatible with a ∼0.4 km diameter nucleus—likely larger than those of the minor Kreutz fragments routinely discovered with coronagraphs, and comparable to or slightly smaller than that of C/2011 W3 (Lovejoy). However, since C/2026 A1 is the only Kreutz sungrazer whose nucleus has been directly observed, these comparisons should be treated with caution" -> https://groups.io/g/comets-ml/message/35035 / https://scicomm.xyz/@qicheng@cometary.org/116245251072721081
Low thermal inertia of carbonaceous asteroid #Bennu driven by cracks observed in returned samples: https://www.nature.com/articles/s41467-026-68505-1 -> Asteroid Bennu’s Rugged Surface Baffled NASA, We Finally Know Why: https://science.nasa.gov/missions/osiris-rex/asteroid-bennus-rugged-surface-baffled-nasa-we-finally-know-why/ and https://www.nasa.gov/image-article/solving-asteroid-bennus-mysteries/
Im watching the #f1 Barcelona Catalunya GP and it feels so cool to watch a race where I’ve been to the track before! Way more real and less videogamey. 🤩
Mamdani has already started fundraising for his 2029 reelection run (Chris Sommerfeldt/Politico)
https://www.politico.com/news/2026/06/11/mamdani-has-already-started-fundraising-for-his-2029-reelection-run-00959145
http://www.memeorandum.com/260611/p119#a260611p119
Das hannoversche Medienunternehmen #heise verlängert vorzeitig seine Partnerschaft mit #Hannover96 um drei weitere Jahre bis einschließlich der Saison 2029/30. Die Entscheidung fiel auf Eigeninitiative von heise und unabhängig von der Liga-Zugehörigkeit des Klubs.
You just know the first place to figure out mind reading is gonna be like, some fuckin restaurant. They'll be like 'we can guess your order' or some shit
The FCC says foreign-made routers and drones can now receive software updates at least until 2029, extending its earlier 2027 cutoff (Michael Kan/PCMag)
https://www.pcmag.com/news/fcc-extends-update-deadline-for-foreign-made-routers-drones-un…
The Transamerica building is beaming tonight. #SanFrancisco
Netflix says it is adding three NFL games, in addition to Christmas Day rights, plus the NFL Honors awards as it extends its NFL deal through the 2029 season (Alex Weprin/The Hollywood Reporter)
https://www.hollywoodreporter.com/tv/tv-news/n…
#Bruttospeicherleistung von #Batteriespeichern nach Marktakteur in #Deutschland ab 2012 mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „akti…
De gezamenlijke netbeheerders hebben bij toezichthouder ACM hun voorstel voor tijdsvariabele nettarieven voor kleinverbruikers ingediend.
De netbeheerders denken dat invoering op zijn vroegst per 2029 kan, maar misschien ook pas 2030
https://www.
Nothing like working really late and just as you're about to leave the fire alarm goes off in the building.
An hour later, false alarm. Definitely not coming to the office tomorrow.
"Egypt installs 800 MW of solar in 2025"
#Egypt #SolarPower #Energy #Renewables
dnc: DNC emails (2016)
A network representing the exchange of emails among members of the Democratic National Committee, in the email data leak released by WikiLeaks in 2016.
This network has 2029 nodes and 12085 edges.
Tags: Social, Communication, Unweighted, Multigraph
https://networks.skewed.de/net/dnc
Netflix streaming 5 NFL games in 2026, including Week 1 Rams-49ers, 2 Christmas matchups https://www.nytimes.com/athletic/7276673/2026/05/13/nfl-netflix-streaming-five-games-christmas/
@… imagine if Chonkers strolled over to the financial district!
Super Bowl expected to return to Las Vegas in 2029; vote coming next week https://www.reviewjournal.com/sports/football/super-bowl/super-bowl-expected-to-return-las-vegas-in-2029-vote-coming-next-week-3729501/
«Post-Quanten-Verschlüsselung — Google peilt 2029 statt 2035 an:
Google hat angekündigt, die Umstellung seiner Produkte auf Post-Quanten-Kryptografie deutlich zu beschleunigen.»
Nicht das Google unrecht hat aber dies ist auch ein Teil ihres Marketing um das Vertrauen ihreren Kunden zu erhöhen.
🔐 https://www.
Weniger #Plastikmüll:
#Mungobohnensprossen sind gesund und einfach selbst zu ziehen! 🌱
Wer gern asiatische #Gemüsepfannen brutzelt, weiß das zu schätzen. Möch…
Google sets a 2029 deadline for its post-quantum cryptography migration, aiming to "secure the quantum era" as "frontiers may be closer than they appear" (Dan Goodin/Ars Technica)
https://arstechnica.com/security/2026/
The Transamerica building is beaming tonight. #SanFrancisco
From the #LPSC #NASA HQ Briefing: the four American robotic #Moon landings planned for this year - the Blue Origin HLS demonstrator for #Artemis should go first, as early as next month. (There is a little #VIPER looking at the latter because this homeless rover might fly on a second demonstrator - if they can figure out how to get it from the 8 meters high lander to the surface.)
From today's #LPSC #NASA briefing: #AI will play a role even in #Artemis ... The two cited abstracts on the #LunarFoundationModel are https://agu.confex.com/agu/agu25/meetingapp.cgi/Paper/1930954 and https://agu.confex.com/agu/agu25/meetingapp.cgi/Paper/1929889
Nothing like working really late and just as you're about to leave the fire alarm goes off in the building.
An hour later, false alarm. Definitely not coming to the office tomorrow.
@… @… Imagine how great it would be if both things could happen!
Verteilung der #Speicherkapazitäten für sonstige #Batterien nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
59 nicht aktive und 0 sonstige Batterien ohne Inbetrieb…
Don't Call It Project 2029 If It's Not A Fighting Document (Brian Beutler/Off Message)
https://www.offmessage.net/p/project-2029-fight-trump-democracy-health-care-doge-project-2025
http://www.memeorandum.com/260529/p63#a260529p63
Noch ein paar der zuletzt hier besonders häufig geteilten #News:
Vorbeiflug an Erde 2029: Mehrere Landungsmissionen auf Apophis geplant
RE: https://mastodon.online/@tinoeberl/116258085903089662
Yeeeeh,
1. Tag im Jahr 2026 mit 1 kWh Ausbeute. 😊
TSMC unveils its process technology roadmap through 2029, aiming to launch a new node yearly for client applications and every two years for AI and HPC (Anton Shilov/Tom's Hardware)
https://www.tomshardware.com/tech-…
🛌 Wissen fürs Kopfkissen: 📖
Wie erkennt man eigentlich, ob #Kipppunkte im #Klimasystem bereits überschritten wurden? Wenn sich das #Klima schleichend verändert, ist der genaue Zeitpunkt zunäc…
@… I have the shirt which I forgot to bring when I went to LA last weekend to ride the D. it would be pretty funny if they actually made underwear.
Die #Kernfusionskollektoranlage hat heute 1,006 kWh Energie eingefangen.
Gesamtleistung: 480 Wp
Ausrichtung: West
Anstellwinkel: 58 Grad
Diese #Balkonsolaranlage wurde durch das Berliner SolarPLUS-Programm gefördert.
Einspeiseverlust: 4.31 %
Interesting article on the art in the D Line Wilshire/Fairfax Station, directly across the street from LACMA https://unframed.lacma.org/2026/05/13/ken-gonzales-day-excavates-lacma-collection-new-metro-d-line-station
Interesting article on the art in the D Line Wilshire/Fairfax Station, directly across the street from LACMA https://unframed.lacma.org/2026/05/13/ken-gonzales-day-excavates-lacma-collection-new-metro-d-line-station
Verteilung der #Speicherkapazitäten für #Metallhydridbatterien nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
7 nicht aktive und 0 Metallhydridbatteri…
Microsoft says it is on track to invest $5.5B in cloud and AI infrastructure in Singapore through 2029, after announcing plans to invest $1B in Thailand (Kimberley Kao/Wall Street Journal)
https://www.wsj.com/tech/ai/microsoft…
Verteilung der #Speicherkapazitäten für #Hochtemperaturbatterie nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
0 nicht aktive und 0 Hochtemperaturbat…
🍮 Wissen zum Nachtisch: 🍨
Wie kann man #Ackerflächen widerstandsfähiger gegen #Extremwetter machen?
Ein altes Anbausystem rückt wieder stärker in den Fokus und eröffnet Chancen für den #Bodenschutz
Anzahl der #Batteriespeicher je #Batterietechnologien in #Deutschland mit Stand vom 17.03.2026.
3124 nicht aktive und 0 Batteriespeicher ohne Inbetriebnahmedatum wurden a…
Spanne der Bruttospeicherleistung von #Batteriespeichern pro Inbetriebnahmejahr von Unternehmen in Deutschland mit Stand vom 17.03.2026.
397 Datensätze ohne #Batteriespeichertechnologie herausgefiltert.
Der Datenbestand enthält unplausible Datensätze.
…
Whatever eagerly awaited #Kreutz #comet C/2026 A1 (MAPS) is up to - see also https://groups.io/g/comets-ml/topic/118409957 and https://nitter.net/JAtanackov/status/2035718257060036738 and https://scicomm.xyz/@qicheng@cometary.org/116262858373488354 - less than two weeks from perihelion, it has developed a long plasma tail now: https://www.facebook.com/photo/?fbid=25816609931372735 (Rhemann & Jäger yesterday with a 12 inch telescope; full and detail).
Spanne der Bruttospeicherleistung von #Batteriespeichern pro Inbetriebnahmejahr von Privatpersonen in Deutschland mit Stand vom 17.03.2026.
397 Datensätze ohne #Batteriespeichertechnologie herausgefiltert.
Der Datenbestand enthält unplausible Datensätze.
Launch of #Progress MS-33 in a few minutes: https://www.youtube.com/watch?v=O1OaCfLTPnw
Only four days after the Ohio event another daylight #fireball yesterday, this time over Texas and again with at least one meteorite fall: https://ares.jsc.nasa.gov/meteorite-falls/events/houston-tx (with early strewnfield map) and https://fireball.amsmeteors.org/members/imo_view/event/2026/1959. Videos of the fireball: https://www.facebook.com/groups/meteoriteclub/posts/10164095912741620/ and https://www.facebook.com/groups/meteoriteclub/posts/10164095916361620/ and https://www.facebook.com/groups/meteoriteclub/posts/10164095412946620/. And the meteorites: https://www.fox26houston.com/news/houston-meteor-reports-rock-woman-home-crash-2026-march and https://www.facebook.com/Fox4DFW/posts/pfbid0xBvNspDzKjdKqeGGoZXRVgEAYAQ3sUxM5WsESReTux2kV9SVTZKkMfnwRB8rJp83l
Zugebaute #Batteriespeicherkapazität pro Monat in #Deutschland mit Stand vom 17.03.2026.
397 Datensätze ohne #Batteriespeichertechnologie herausgefil…
Ground penetrating radar observations of ancient large-scale deltaic structures in Jezero crater, #Mars: https://www.science.org/doi/10.1126/sciadv.adz6095 -> Perseverance’s radar revealed ancient subsurface river delta on Mars: https://arstechnica.com/science/2026/03/perseverances-radar-revealed-ancient-subsurface-river-delta-on-mars/ - there may be a river delta hidden under the obvious delta in a Martian crater.
Verteilung der #Speicherkapazitäten für Redox-Flow-Batterie nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
9 nicht aktive und 0 Redox-Flow-Batterien ohne Inbetriebnahmedatum wurden ausgefiltert.
Der Datenbestand enthält ggf. unplausible Datensätze.
👉…
Experimental evidence for granular shear-flow instability in the Epstein regime: #planets - a turbulent story: https://mediarelations.unibe.ch/media_releases/2026/media_releases_2026/evolution_of_planets/index_eng.html
Verteilung der #Speicherkapazitäten für #Bleibatterie nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
135 nicht aktive und 0 Bleibatterien ohne Inbetriebnahmeda…
The #ArtemisII stack arrived back at the pad today, with a launch on April 1st (Europe: April 2nd) still a possibility: https://www.nasa.gov/blogs/missions/2026/03/20/nasas-artemis-ii-rocket-arrives-at-launch-pad-39b/ and https://www.esa.int/ESA_Multimedia/Images/2026/03/Artemis_II_rolls_again and many more roll-out pictures in https://www.flickr.com/photos/nasahqphoto/albums/72177720332614865/
Verteilung der #Speicherkapazitäten für #Lithiumbatterien nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
2914 nicht aktive und 2 Lithiumspeicher ohne Inbet…
RE: #LunarEclipse the darker it gets - but the correlation isn't that good and more factors are in play (which are difficult to determine because eclipses - with good data - are so rare).
Anzahl von #Stromspeichern als #Notstromaggregate in #Deutschland mit Stand vom 17.03.2026.
3125 nicht aktive und 24 Speicher ohne Inbetriebnahmedatum wurden ausgefiltert. Ein…
📰 Mit Deiner Hilfe teile ich täglich #Forschungserkenntnisse und Neuigkeiten, die uns u. a. vor gesundheitlichen und finanziellen Risiken warnen und Fortschritte in #Klimaanpassung, #Energiewende
Theory of striped dynamic spectra of the #CrabPulsar high-frequency interpulse: https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/theory-of-striped-dynamic-spectra-of-the-crab-pulsar-highfrequency-interpulse/66FDEA9FA0464343A7EAA1E2EFF44A29 -> Study reveals cosmic tug-of-war behind the Crab Pulsar’s zebra stripes: https://news.ku.edu/news/article/study-reveals-cosmic-tug-of-war-behind-the-crab-pulsars-zebra-stripes
@… That's sweet. I grew up on the beach in LA and I love the blue lifeguard station so much!
#Stromspeicherkapazitäten je #Speichertechnologie in #Deutschland mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“ und vorhan…
Today it took Michael Jäger and Gerald Rhemann a 12-inch telescope and 27 minutes of total exposure time to show #comet C/2025 R3 (PANSTARRS) this nicely: https://www.facebook.com/photo/?fbid=2382646772252141 - but if it stays the course (brightness-wise speaking) it could be quite impressive for much smaller gear as well as the human eye just a month from now.
🍮 Wissen zum Nachtisch: 🍨
Retröt: #Klimaleugner nutzen gezielte Taktiken, um #Wissenschaft zu diskreditieren und Bürger zu täuschen.
Ihre 5 Vorgehensweisen können mit dem sogenannten #FLICC
A rubbish challenge: how do we dump space junk? Modern life depends on space-based infrastructure, but there’s a lot of junk orbiting alongside working spacecraft. Katherine Courtney and Alice Gorman talk to Margaret Harris about the danger of #SpaceDebris – and what we need to do about it: https://physicsworld.com/a/a-rubbish-challenge-how-do-we-dump-space-junk/ (looong).
@… it's not it was a little north of that I think, Shasta was on the other side of the train from me and I think it was still dark when we got there. I'll try to figure out where it is. I went north about a month ago and then LA twice since then.
#Bruttospeicherleistung je #Speichertechnologie in #Deutschland mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“ und vorhandenem Inb…
A super long #NovayaZemlya #mirage phenomenon at #sunset in real-time: https://www.youtube.com/watch?v=98cU4zjmSbs with stills in https://spaceweathergallery2.com/indiv_upload.php?upload_id=231610 - the Sun was still visible when more than 3° below the geometrical horizon!
Neue Inbetriebnahmen von #Stromspeichern je #Batterietechnologie in #Deutschland mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“ und vorhan…
@… what a nice house!
Confirming Nunki as the closest #CoreCollapse progenitor candidate to the Sun: https://arxiv.org/abs/2603.17011 -> it's a pair of 6 M_Sun stars at 69 parsec that will merge into a 10 M_Sun star and thus end as a supernova.
#Speicherkapazität der #Batteriespeicher in #Deutschland je Netzanschlussebene ab 2012 mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“…
The dramatic transition of the extreme Red #Supergiant WOH G64 to a Yellow Hypergiant: https://arxiv.org/abs/2411.19329 - this 2024 paper, already mentioned by me in connection with other observations of that star in https://skyweek.wordpress.com/2024/11/24/allgemeines-live-blog-ab-dem-24-11-2024/ ("Die enge zirkumstellare Umgebung des Roten Überriesen WOH G64 ..."), has now been formally published: https://www.nature.com/articles/s41550-026-02789-7.epdf?sharing_token=7UR_XvTAZerqnMHPRyA0LtRgN0jAjWel9jnR3ZoTv0N7FejDObMF3AkHA10E71tuouxDX6yP8bM1QCFKGVVZLl8bT37LMadR8u4ukhACilFI60-Zxl0e00Bc0v3qXkG29yIQr7uTE0sd644q7We4d6ay5Tblhxc-UABROlAnuDs=
Weniger #Plastikmüll:
Man möchte #Plastik vermeiden und überlegt, auf feste #Seife umzusteigen, aber wie hygienisch ist das? 🤔 Kann man über die Seife
Distinct Rotational Evolution of Giant Planets and Brown Dwarf Companions: #exoplanet spins confirms long-predicted relationship between planetary mass and rotation: https://keckobservatory.org/kpic-spin-survey/ with https://www.dropbox.com/scl/fo/w5f4ntav4pybpale8c6p6/ANbPpoQxnCEIG2i-0vL5Ll8?rlkey=cxblu3u2n3ovocew0qch46opt&e=1&st=fgpk8v3u&dl=0
Probing the limits of #habitability - a catalogue of rocky exoplanets in the habitable zone: https://academic.oup.com/mnras/article/547/3/stag028/8526432?login=false -> The best places to look for alien life: https://ras.ac.uk/news-and-press/research-highlights/best-places-look-alien-life-scientists-identify-45-earth-worlds - scientists identify 45 Earth-like worlds to explore for a 'Project Hail Mary'.
Also, Amtrak clearly knows I'm going to ride the new Metro D line extension when I get there, there are signs everywhere!
#Amtrak #CoastStarlight #Tågskryt
A second-generation star in a relic dwarf galaxy: #Star Discovered Inside Ancient Relic Dwarf Galaxy: https://noirlab.edu/public/news/noirlab2607/ - the star is the first unambiguous example of chemical enrichment by the first stars in the Universe within a primordial environment.
Back on the train to LA for ⚽️! The light on the bay is lovely today.
#Amtrak #CoastStarlight #Tågskryt
The increasingly dominant role of climate change on #LengthOfDay variations: https://www.pnas.org/doi/10.1073/pnas.2406930121 (and a newer paper, stupidly paywalled) -> Climate change slows Earth's spin - day lengthening unprecedented in 3.6 million years: https://www.univie.ac.at/en/news/detail/climate-change-slows-earths-spin-day-lengthening-unprecedented-in-36-million-years and https://baug.ethz.ch/en/news-and-events/news/2026/03/climate-change-slows-earths-spin-day-lengthening-unprecedented-in-3-point-6-million-years.html
0.33g mitigates muscle atrophy while 0.67g preserves muscle function and myofiber type composition in mice during #spaceflight: https://www.science.org/doi/10.1126/sciadv.aed2258 -> New Research on Muscle Loss Suggests Humans Will Really Suffer on Mars: https://gizmodo.com/mars-doesnt-have-enough-gravity-to-keep-humans-healthy-study-suggests-2000733286
A rare daylight #fireball coming with a loud bang was seen and heard Tuesday morning over the U.S. and Ohio in particular: https://www.youtube.com/watch?v=dHBjApk3d6w - see https://skyweek.wordpress.com/2026/03/12/allgemeines-live-blog-ab-dem-12-marz-2026/ for links to many more reports. And https://ares.jsc.nasa.gov/meteorite-falls/events/windfall-oh says: "Signatures of falling meteorites are seen in data from three weather radars [...] NASA Meteoroid Environment Office finds that this was a 2m diameter object weighing around 6 metric tons - more of a small asteroid than a large meteoroid. [...] There are meteorites on the ground around Windfall, OH towards River Styx, OH."
A scary milestone was reached on Tuesday when for the first time more than 10,000 #Starlink satellites were in LEO simultaneously: https://spaceflightnow.com/2026/03/16/live-coverage-spacex-to-launch-25-starlink-satellites-on-falcon-9-rocket-from-california/ - see https://www.planet4589.org/space/con/star/stats.html for the hard numbers, namely 10,049 satelltes in orbit (with 10,039 of them working of which 7903 are in operational orbits) out of 11,558 launched in total since 2018.
Sequential Fragmentation of C/2025 K1 (ATLAS) After Its Near-Sun Passage: #comet breaking up: https://esahubble.org/news/heic2606/ and https://science.nasa.gov/missions/hubble/nasas-hubble-unexpectedly-catches-comet-breaking-up/ (the paper as submitted had been discussed by me last November in https://skyweek.wordpress.com/2025/11/26/heute-beginnt-die-tagung-des-esa-ministerrats/ - "So sah Hubble den Kometen C/2025 K1 (ATLAS) zerbrechen").
China has unveiled an AI-powered humanoid robot that it plans to send to the #Moon as part of its 2029 Chang’e-8 mission: https://www.independent.co.uk/space/china-robot-moon-mission-humanoid-b2974130.html - the 100 kilogram robot will act as a porter to transport and install instruments at various lunar locations ahead of a crewed landing.