Tootfinder

Vorbeiflug an Erde 2029: Mehrere Landungsmissionen auf Apophis geplant
Der Asteroid Apophis wird im Frühjahr 2029 sehr nah an der Erde vorbeifliegen. Mehrere Sonden sollen in diesem Zeitraum auf ihm landen.

The Type II SN 2025pht in NGC 1637 - A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a #Supernova Progenitor Star: https://iopscience.iop.org/article/10.3847/2041-8213/ae04de -> Webb locates former star that exploded as supernova: https://esawebb.org/news/weic2604/ & https://science.nasa.gov/missions/webb/nasas-webb-telescope-locates-former-star-that-exploded-as-supernova/ -
Webb shows star was surrounded by a vast shell of carbon-rich dust.

Noch ein paar der zuletzt hier besonders häufig geteilten #News:
Vorbeiflug an Erde 2029: Mehrere Landungsmissionen auf Apophis geplant

Formation and Survival of Complex Organic Molecules in the Jovian Circumplanetary Disk: #Jupiter

MUSE Study of Two Giant Low-surface-brightness #Galaxies with Compact Satellites: https://iopscience.iop.org/article/10.3847/1538-4357/ae3139 -> Rare Giant Galaxies: https://aasnova.org/2026/02/23/featured-image-rare-giant-galaxies/

Spanne der Bruttospeicherleistung von #Batteriespeicher​n pro Inbetriebnahmejahr von Unternehmen in Deutschland mit Stand vom 17.03.2026.
397 Datensätze ohne #Batteriespeichertechnologie herausgefiltert.
Der Datenbestand enthält unplausible Datensätze.
…

Constraining properties of dust formed in #WolfRayet binary WR 112 using mid-infrared and millimeter observations: #dust grains emanating from a massive #BinaryStar system: https://public.nrao.edu/news/a-quintillion-to-one-giant-stars-tiny-dust/

"Norway hits pause on deep-sea mining until 2029 amid growing environmental pressure"
#Norway #Oceans #Environment

Norway hits pause on deep-sea mining until 2029 amid growing environmental pressure | The Optimist Daily

Simultaneous Double Transits of #Phobos and #Deimos as Seen from the Martian Surface - A Millennium Catalogue: #Mars

Bay Light are back!
#SanFrancisco

#CoronaDischarges Glow on Trees Under Thunderstorms: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL119591 -> Thunderstorms conjure ghostly coronae in treetops, observed outdoors for the first time: https://news.agu.org/press-release/thunderstorms-conjure-ghostly-coronae-in-treetops-observed-outdoors-for-the-first-time/ - the weak electric discharges may set off ultraviolet sparkles over large swaths of forest under storms, potentially impacting canopy health (this is fringe geophysics but some amateur astronomers are going after corona discharges - esp. in webcam images from mountain sites - with a vengeance, so here goes).

Spanne der Bruttospeicherleistung von #Batteriespeicher​n pro Inbetriebnahmejahr von Privatpersonen in Deutschland mit Stand vom 17.03.2026.
397 Datensätze ohne #Batteriespeichertechnologie herausgefiltert.
Der Datenbestand enthält unplausible Datensätze.

Due to weather, NASA now is targeting early Wednesday, Feb. 25, to roll the SLS (Space Launch System) rocket and Orion spacecraft for #ArtemisII off the launch pad and back to the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida: https://www.nasa.gov/blogs/missions/2026/02/23/nasa-targets-artemis-ii-rollback-on-wednesday/ - cold temperatures and high winds are expected Tuesday, and rolling on Feb. 25, gives teams enough time to complete preparations at the launch pad that were limited today by high winds in the area.

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).

Zugebaute #Batteriespeicherkapazität pro Monat in #Deutschland mit Stand vom 17.03.2026.
397 Datensätze ohne #Batteriespeichertechnologie herausgefil…

#Bruttospeicherleistung von #Batteriespeichern nach Marktakteur in #Deutschland ab 2012 mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „akti…

NASA is taking steps to potentially roll back the #ArtemisII rocket and Orion spacecraft to the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida after overnight Feb. 21 observing interrupted flow of helium to the SLS (Space Launch System) rocket’s interim cryogenic propulsion stage: https://www.nasa.gov/blogs/missions/2026/02/21/nasa-troubleshooting-artemis-ii-rocket-upper-stage-issue-preparing-to-roll-back/ - the upper stage uses helium to maintain the proper environmental conditions for the stage’s engine and to pressurize liquid hydrogen and liquid oxygen propellant tanks; the systems worked during NASA’s Artemis II wet dress rehearsals, but teams were not able to properly flow helium during normal operations and reconfigurations following the wet dress rehearsal that concluded Feb. 19.

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).

Weniger #Plastikmüll:
#Mungobohnensprossen sind gesund und einfach selbst zu ziehen! 🌱
Wer gern asiatische #Gemüsepfannen brutzelt, weiß das zu schätzen. Möch…

Küchentipp: Mungobohnensprossen selber machen mit einem DIY-Sprossenglas
Mungobohnensprossen sind eine gesunde und leckere Zutat für viele Gerichte. Mit einem DIY-Sprossenglas kannst du sie ganz einfach selbst ziehen.

Speicherkrise: Playstation 6 könnte bis 2028 oder 2029 verschoben werden
Die Speicherkrise setzt auch Konsolenhersteller unter Druck: Während die Playstation 6 vor einer Verschiebung stehen soll, könnte die Switch 2 teurer werden.

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

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…

RE: https://mastodon.online/@tinoeberl/116258085903089662
Yeeeeh,
1. Tag im Jahr 2026 mit 1 kWh Ausbeute. 😊

🛌 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…

Kipppunkte im Klimasystem: Die ersten sind erreicht - vor 25 Jahren
Wie nah sind wir am Klimakollaps? Kipppunkte im Klimasystem – welche wurden bereits überschritten?

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 %

The only genuine image of the 2026 annular #SolarEclipse I've seen so far - and at an extremely short wavelength of only 17 nanometers, from the Proba 2 satellite: https://proba2.sidc.be/Eclipse17February2026 (which sees the solar corona in emission, so the Sun doesn't have a sharply defined edge).

Verteilung der #Speicherkapazitäten für #Metallhydridbatterien nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
7 nicht aktive und 0 Metallhydridbatteri…

A the press conference #ArtemisII launch after the WDR went so well - see also https://www.nasa.gov/blogs/missions/2026/02/19/nasa-begins-artemis-ii-launch-pad-ops-after-successful-fuel-test/ issued just after it had ended - but this will not be confirmed before the Flight Readiness Review late next week.

Verteilung der #Speicherkapazitäten für #Hochtemperaturbatterie nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
0 nicht aktive und 0 Hochtemperaturbat…

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.

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 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.
👉…

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 #Bleibatterie nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
135 nicht aktive und 0 Bleibatterien ohne Inbetriebnahmeda…

Verteilung der #Speicherkapazitäten für #Lithiumbatterien nach Bundesland in #Deutschland mit Stand vom 17.03.2026.
2914 nicht aktive und 2 Lithiumspeicher ohne Inbet…

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

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#Stromspeicherkapazitäten je #Speichertechnologie in #Deutschland mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“ und vorhan…

"The most recent orbital computations make it increasingly likely that the object [the new #Kreutz comet MAPS] is a fragment of one of the comets observed by Ammianus Marcellinus in AD 363, thereby strengthening evidence in support of the contact-binary hypothesis of the Kreutz system," writes Zdenek Sekanina in https://arxiv.org/abs/2602.17626: "In this context, the comet is the only second-generation fragment of Aristotle's comet that we are aware of to appear after the 12th century. It does not look like a major fragment, but rather like an outlying fragment of a much larger sungrazer."

🍮 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

Klimaanpassung in der Landwirtschaft: Agroforst schützt Boden und Biodiversität
Agroforst rettet Böden und schützt das Klima – entdecke, wie Bäume auf Feldern gegen Hitze, Erosion und Artenverlust helfen können

"The #ArtemisII wet dress rehearsal ended today at 10:16 p.m., concluding as planned at T-29 seconds in the countdown."

Anzahl der #Batteriespeicher je #Batterietechnologien in #Deutschland mit Stand vom 17.03.2026.
3124 nicht aktive und 0 Batteriespeicher ohne Inbetriebnahmedatum wurden a…

JWST Discovers the Vertical Structure of #Uranus' Ionosphere: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL119304 -> Webb maps the mysterious upper atmosphere of Uranus: https://esawebb.org/news/weic2602/ - Webb provides the first vertical view of the planet’s ionosphere, revealing auroras shaped by its tilted magnetic field.

"After running through terminal count for the #ArtemisII wet dress rehearsal, the launch team paused the clock at T-33 seconds in the countdown," says https://www.nasa.gov/blogs/missions/2026/02/19/live-artemis-ii-wet-dress-rehearsal-coverage/: "Teams are now reconfiguring and replenishing the liquid hydrogen and liquid oxygen systems, in order to recycle back to the T-10 minute mark and perform another run of terminal count. [...] The entire recycle process lasts approximately 60 to 90 minutes."

Measurement of a lithium plume from the uncontrolled #reentry of a Falcon 9: https://www.nature.com/articles/s43247-025-03154-8 -> SpaceX rocket fireball linked to plume of polluting lithium: https://www.bbc.com/news/articles/cpd8z4eqlxno

45 minutes til the simulated #ArtemisII launch, and according to https://www.youtube.com/watch?v=-KYhqePsm38 and https://www.nasa.gov/blogs/missions/2026/02/19/live-artemis-ii-wet-dress-rehearsal-coverage/ the 2ns wet dress rehearsal is going to plan. How the outcome will be reported: https://www.nasa.gov/news-release/nasa-to-provide-coverage-of-artemis-ii-wet-dress-rehearsal/

Juno's high-spatial-resolution ultraviolet observations of Ganymede's auroral patches - constraints on the magnetospheric source region: #Ganymede and Earth: https://www.missionjuno.swri.edu/news/university-of-liege-scientists-reveal-similarities

#Starliner Propulsion System Anomalies during the Crewed Flight Test - Investigation Report: https://www.nasa.gov/wp-content/uploads/2026/02/nasa-report-with-redactions-021926.pdf -> Agency leaders are discussing the findings of investigations into the 2024 crewed test flight of Boeing Starliner to the International Space Station: https://www.youtube.com/watch?v=geneWmI9ZMY -> NASA Releases Report on Starliner Crewed Flight Test Investigation: https://www.nasa.gov/news-release/nasa-releases-report-on-starliner-crewed-flight-test-investigation/

🍮 Wissen zum Nachtisch: 🍨
Retröt: #Klimaleugner nutzen gezielte Taktiken, um #Wissenschaft zu diskreditieren und Bürger zu täuschen.
Ihre 5 Vorgehensweisen können mit dem sogenannten #FLICC

Die Tricks der Klimaleugner oder: Techniken der Wissenschaftsleugnung (F-L-I-C-C)
Die 5 Tricks der Wissenschaftsverweigerer. Entdecke die Techniken der Klimaleugner und das F-L-I-C-C-Modell. Was sind die rhetorischen Taktiken in der Klimawandeldebatte?

HOLISMOKES XIX - SN 2025wny at z=2, the first strongly lensed superluminous supernova / XX - Lens models of binary lens galaxies with five images of Supernova Winny: #supernova: https://www.tum.de/en/news-and-events/all-news/press-releases/details/measuring-the-expansion-of-the-universe-with-cosmic-fireworks - measuring the expansion of the universe with cosmic fireworks.

#Bruttospeicherleistung je #Speichertechnologie in #Deutschland mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“ und vorhandenem Inb…

Tracking the Evolution of Plasma Instabilities from the Prominence–Corona Transition Region into Interplanetary Space with Total Solar Eclipse and PSP/WISPR White Light Images: #corona: https://www.hawaii.edu/news/2026/02/17/eclipse-research-suns-corona/

Neue Inbetriebnahmen von #Stromspeicher​n je #Batterietechnologie in #Deutschland mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“ und vorhan…

Detection of a giant #flare displaying quasi-periodic pulsations from a pre-main-sequence M star by the Next Generation Transit Survey: https://academic.oup.com/mnras/article/482/4/5553/5224549?login=false -> Weathering a Stellar Temper Tantrum - How space weather complicates exoplanet habitability: https://astrobites.org/2026/02/16/stellar-temper-tantrum/

#Speicherkapazität der #Batteriespeicher in #Deutschland je Netzanschlussebene ab 2012 mit Stand vom 17.03.2026.
Betrachtet werden Datensätze mit Betriebsstatus „aktiv“…

A Physics Informed Neural Network for Deriving MHD State Vectors from Global Active Regions Observations: #SpaceWeather: https://www.swri.org/newsroom/press-releases/new-research-takes-first-step-toward-advance-warnings-of-space-weather

The #LOFAR Two-metre Sky Survey - VII. Third Data Release: https://arxiv.org/abs/2602.15949 -> Largest Ever Radio Sky Survey Maps the Universe in Unprecedented Detail: https://www.ru.nl/en/research/research-news/largest-ever-radio-sky-survey-maps-the-universe-in-unprecedented-detail (see the ALT text for what the three sample images show).

Weniger #Plastikmüll:
Man möchte #Plastik vermeiden und überlegt, auf feste #Seife umzusteigen, aber wie hygienisch ist das? 🤔 Kann man über die Seife

Bad-Mythos: "Seifenstücke sind unhygienisch" - Faktencheck zur plastikfreien Alternative
Ist feste Seife unhygienisch? Faktencheck, wie sicher Seifenstücke wirklich sind und warum sie eine plastikfreie Alternative darstellen.

Caltech astrophysicist fatally shot on porch of his rural SoCal home: #Grillmair was a specialist for #TidalStreams of #galaxies as his publications (as first author) listed in https://ui.adsabs.harvard.edu/search/q= first_author:"Grillmair"&sort=date desc, bibcode desc&p_=0 show.

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

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.

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).

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!

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.

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=

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'.

Candidate Dark Galaxy-2 - Validation and Analysis of an Almost Dark #Galaxy in the Perseus Cluster: https://iopscience.iop.org/article/10.3847/2041-8213/adddab/meta -> NASA’s Hubble Identifies One of Darkest Known Galaxies: https://science.nasa.gov/missions/hubble/nasas-hubble-identifies-one-of-darkest-known-galaxies/

Cenozoic evolution of earth’s strongest geoid low illuminates mantle dynamics beneath #Antarctica: https://www.nature.com/articles/s41598-025-28606-1 -> Beneath Antarctica - the deep-time story behind Earth’s largest “gravity low”: https://www.ipgp.fr/en/news-and-agenda/news/beneath-antarctica-the-deep-time-story-behind-earths-largest-gravity-low/ -> Antarctica’s ‘Gravity Hole’ Has Been Quietly Growing Stronger: https://gizmodo.com/antarcticas-gravity-hole-has-been-quietly-growing-stronger-2000722955 - scientists aren't fully sure what this means for Antarctica's future, however.

An animation of the antumbra from space during yesterday's #SolarEclipse: https://scicomm.xyz/@AstroDave/116087138815117726 - see also https://www.facebook.com/watch/?v=881466661392738 and https://bsky.app/profile/youstorm.bsky.social/post/3mf4vgedthc2p for animations from another position.

JWST Reveals a Candidate #JellyfishGalaxy at z = 1.156: https://iopscience.iop.org/article/10.3847/1538-4357/ae3824 -> Scientists observe distant jellyfish galaxy for first time: https://uwaterloo.ca/news/media/scientists-observe-distant-jellyfish-galaxy-first-time - new astronomical find is 8.5 billion years old and reshapes our understanding of early cosmic evolution.

ALMA and JWST Identification of Faint Dusty Star-forming Galaxies up to z ∼ 8 and Their Connection with Other Galaxy Populations: #galaxies almost 13 billion years old, helping to revise the history of the universe: https://www.umass.edu/news/article/international-team-astronomers-led-umass-amherst-may-have-just-found-one-missing-links

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").

The #SolarEclipse today from space: https://mastodon.social/@PlanetariumBochum/116087072853257668 - images of the ring from the ground aren't in yet; I've heard that Mirny was clouded out but that they wanted to get someting at Concordia.

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.

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 second #LPSC NASA briefing today dealt mostly with planetary science funding details: https://www.youtube.com/watch?v=N8-enBzNwlo

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

A Galactic Transformation - Understanding the SMC’s Structural and Kinematic Disequilibrium: #SmallMagellanicCloud

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/

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.

The #SolsrEclipse live from South Africa: https://www.youtube.com/live/DfwhUn3OKIs

RE: #SolarEclipse!

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.

In a few minutes on #NASA Headquarters Briefing at the Lunar and Planetary Science Conference featuring Louise Prockter, Planetary Science Division Director and Brad Bailey, Assistant Deputy Associate Administrator for Exploration.

Hints of Primordial Magnetic Fields at Recombination and Implications for the Hubble Tension: #HubbleTension and other cosmic mysteries: https://www6.slac.stanford.edu/news/2026-03-13-primordial-magnetic-fields-could-resolve-hubble-tension-and-other-cosmic-mysteries - an international team of researchers simulated magnetic forces in the early universe and found they could bridge the gap between the observed and calculated rates of the universe’s expansion.

A complete set of canonical nucleobases in the carbonaceous asteroid (162173) #Ryugu: https://www.nature.com/articles/s41550-026-02791-z -> "The detection of diverse nucleobases in asteroid and meteorite materials demonstrates their widespread presence throughout the Solar System and reinforces the hypothesis that carbonaceous asteroids contributed to the prebiotic chemical inventory of early Earth."

Volatile-rich evolution of molten super-Earth L 98-59 d: #planet: https://www.ox.ac.uk/news/2026-03-16-researchers-reveal-new-class-molten-planet

Searching for Life-As-We-Don't-Know-It - Mission-relevant Application of Assembly Theory for Exoplanet Life Detection: #Life, But Not As We Know It: https://www.universetoday.com/articles/life-but-not-as-we-know-it

Assimilation of Ground and Satellite Magnetic Observations Unravels the Ionospheric, Magnetospheric, and Induced Fields During the May and October 2024 #GeomagneticStorms: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL116964 -> How does an ice satellite detect a geomagnetic storm? https://www.esa.int/Applications/Observing_the_Earth/FutureEO/CryoSat/How_does_an_ice_satellite_detect_a_geomagnetic_storm

RE: https://mastodon.social/@esoastronomy/116239348555593632
The related RAS statement: https://ras.ac.uk/news-and-press/news/spacex-and-reflect-orbital-plans-would-permanently-scar-night-sky. And what the Astronomers for Planet Earth say: https://a4e.org/protecting-planet-earths-skies-a4es-statement-on-proposed-large-satellite-constellations/

Before and after pictures of the rocket test 100 years ago today, from the fantastic #Goddard collection at https://commons.clarku.edu/goddardlaunch/ - articles about the historical event and its context also at https://www.collectspace.com/news/news-031626a-robert-goddard-liquid-fuel-rocket-centennial-where-nell.html (small parts of the hardware may have survived after all), https://aerospaceamerica.aiaa.org/goddardcentennial-origins/ -> https://aerospaceamerica.aiaa.org/goddardcentennial-space-craze/ -> https://aerospaceamerica.aiaa.org/goddardcentennial-legacy/ and https://www.space.com/space-exploration/2-seconds-that-changed-the-world-the-1st-liquid-fueled-rocket-launched-100-years-ago-today

A folk song written earlier this year to celebrate the 100th anniversary of the #Goddard launch: https://www.youtube.com/watch?v=jCEN_JjU02c - it captures the event and its legacy well (and makes reference to Goddard's famous cherry tree and the fact that the farm where it happened is now a golf course). Artist's home page: https://roncarlsonmusic.com

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