Veganism Social

Mark McCaughreanThe peak of solar maximum is behind us now, but the Sun is still putting on a decent show of sunspots 🌞👍Here’s the current status, images by projecting through my binoculars on to some white paper & then photographing with my iPhone 📱From top right (east) to bottom left (west), we have Active Regions 4055 & 4058, then 4056, 4061, & 4060. Current snapshot from <a href="https://www.spaceweatherlive.com/en/solar-activity/sunspot-regions.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.spaceweatherlive.com/en/solar-activity/sunspot-regions.html</a> in the next toot. <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photography</a> <a href="https://mastodon.social/tags/iPhonePhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#iPhonePhotography</a>

☬𝓐𝓶𝓲𝓬𝓐_𝓛𝓾𝓬𝓲𝓢☬ ✅<a href="https://mastodon.online/tags/%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%B5%D1%81%D0%BD%D0%BE%D0%B5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#интересное</a> <a href="https://mastodon.online/tags/spaces" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spaces</a> <a href="https://mastodon.online/tags/spacescience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spacescience</a> С днем космонавтики !

Luke DruryTrump really doesn't like science."Among the proposals were: A two-thirds cut to astrophysics, down to $487 million; a greater than two-thirds cut to heliophysics, down to $455 million; a greater than 50 percent cut to Earth science, down to $1.033 billion; and a 30 percent cut to Planetary science, down to $1.929 billion." Many science missions by ESA, JAXA etc have NASA contributions so not just US.<a href="https://arstechnica.com/space/2025/04/trump-white-house-budget-proposal-eviscerates-science-funding-at-nasa/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://arstechnica.com/space/2025/04/trump-white-house-budget-proposal-eviscerates-science-funding-at-nasa/</a><a href="https://mastodon.dias.ie/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.dias.ie/tags/Astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astrophysics</a> <a href="https://mastodon.dias.ie/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.dias.ie/tags/PlanetaryScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PlanetaryScience</a>

Hacker News'Sun-Like' Stars<a href="https://www.centauri-dreams.org/2025/04/08/on-sun-like-stars/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.centauri-dreams.org/2025/04/08/on-sun-like-stars/</a><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HackerNews</a> <a href="https://mastodon.social/tags/SunLikeStars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SunLikeStars</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/StarFormation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#StarFormation</a> <a href="https://mastodon.social/tags/CosmicExploration" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CosmicExploration</a>

Hacker NewsA Multiwavelength Look at Proxima Centauri's Flares<a href="https://www.centauri-dreams.org/2025/04/01/a-multiwavelength-look-at-proxima-centauris-flares/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.centauri-dreams.org/2025/04/01/a-multiwavelength-look-at-proxima-centauris-flares/</a><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HackerNews</a> <a href="https://mastodon.social/tags/Multiwavelength" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Multiwavelength</a> <a href="https://mastodon.social/tags/ProximaCentauri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ProximaCentauri</a> <a href="https://mastodon.social/tags/Flares" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Flares</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/StellarPhenomena" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#StellarPhenomena</a>

Steve's PlaceDespite the machinations of Trump's evil empire, science marches on!Mostly, in other countries.Here's exciting new space science from Smethurst and collaborators. Hey! That's Dr. Becky, whose team has discovered something surprising about the early universe!<a href="https://www.youtube.com/watch?v=INhHgflGwaE" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=INhHgflGwaE</a><a href="https://mastodon.stevesworld.co/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://mastodon.stevesworld.co/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#space</a> <a href="https://mastodon.stevesworld.co/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://mastodon.stevesworld.co/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.stevesworld.co/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophysics</a> <a href="https://mastodon.stevesworld.co/tags/JWST" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#JWST</a>

Hacker NewsNeutron Stars Hint at Another Dimension<a href="https://nautil.us/neutron-stars-hint-at-another-dimension-1202180/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://nautil.us/neutron-stars-hint-at-another-dimension-1202180/</a><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HackerNews</a> <a href="https://mastodon.social/tags/NeutronStars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NeutronStars</a> <a href="https://mastodon.social/tags/AnotherDimension" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AnotherDimension</a> <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a> <a href="https://mastodon.social/tags/News" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#News</a>

Hacker NewsProtoplanetary Disks Are Smaller Than Expected<a href="https://www.centauri-dreams.org/2025/04/04/protoplanetary-disks-are-smaller-than-expected/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.centauri-dreams.org/2025/04/04/protoplanetary-disks-are-smaller-than-expected/</a><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HackerNews</a> <a href="https://mastodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ProtoplanetaryDisks</a> <a href="https://mastodon.social/tags/SmallerThanExpected" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SmallerThanExpected</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/News" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#News</a> <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/CosmicFormation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CosmicFormation</a>

Mark McCaughreanA nice conjunction during dusk this evening between our Moon at 30% illumination, and Jupiter and its four Galilean moons. I post this as an apology to Callisto, which was the last location to be axed from my forthcoming book, "111 Places in Space You Must Not Miss" during final edits last night 😬I mean, it's a fascinating place & the chapter I'd written had some good stuff in it, but since I'd written 118 chapters, something had to give 🥴<a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> 🔭 <a href="https://mastodon.social/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photography</a> 📷 <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> 🚀

Mark McCaughreanSince this morning, the NASA/ESA/CSA <a href="https://mastodon.social/tags/JWST" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#JWST</a> has been taking near-IR images of Sharpless 305, a star-forming region in the outer reaches of the Milky Way ✨Below is an image taken with the ESO VLT many years ago in poor weather – the JWST images should be better 😉When finished in a couple of hours, that'll be the last of my Guaranteed Time Observations, granted when I was selected as a member of the JWST Science Working Group in 2002 👴 It has been a privilege 🙇‍♂️<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a>

Mark McCaughreanTo further mark the retirement of the ESA's amazingly successful <a href="https://mastodon.social/tags/Gaia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaia</a> Milky Way surveyor spacecraft yesterday, some pictures taken of it during my visit to EADS Astrium in Toulouse on 3 May 2013, 6.5 months before launch.1. Me in front of the large silicon carbide torus with its two large rectangular telescope primary mirrors;2. The torus from below;3. The huge focal plane with its 106 CCD detectors;4. The large "top hat" that covers it all.<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photography</a>

Mark McCaughreanSome memorabilia from yesterday’s event at ESOC as the ESA <a href="https://mastodon.social/tags/Gaia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaia</a> spacecraft was deactivated after running out of propellant & moved off L2 into an Earth-trailing solar orbit.One of these objects might last until the Sun turns into red giant five billion years from now; the other will be lucky to last the weekend 🤷‍♂️🍻Thanks to my ESA colleagues for the former & the fine folk at Oedipus Brewing in Amsterdam for the latter 🙂👍<a href="https://oedipus.com" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://oedipus.com</a><a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photography</a>

Mark McCaughreanPlanets, stars, clusters, & the Milky Way – the view in four directions from our rooftop terrace this evening ✨The perfect way to reflect on the retirement of the astonishing Gaia spacecraft, its 11 year work scanning the skies now at an end 🛰️It’s in one of those pictures 📷And on time spent today with good friends & colleagues from ESA & beyond who made this all possible, celebrating the science, but also the shared purpose & endeavour for all humankind 🙇‍♂️<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a>

st1nger :unverified: 🏴‍☠️ :linux: :freebsd:The <a href="https://infosec.exchange/tags/European" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#European</a> <a href="https://infosec.exchange/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Space</a> Agency <a href="https://infosec.exchange/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESA</a> has powered down its <a href="https://infosec.exchange/tags/Gaia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaia</a> spacecraft after more than a decade spent gathering data that are now being used to unravel the secrets of our home galaxy. On 27 March 2025, Gaia’s control team at ESA’s European Space Operations Centre carefully switched off the spacecraft’s subsystems and sent it into a ‘retirement orbit’ around the Sun. <a href="https://infosec.exchange/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://infosec.exchange/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://infosec.exchange/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a> <a href="https://www.esa.int/Enabling_Support/Operations/Farewell_Gaia!_Spacecraft_operations_come_to_an_end" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.esa.int/Enabling_Support/Operations/Farewell_Gaia!_Spacecraft_operations_come_to_an_end</a>

Mark McCaughreanFittingly the last talk of today’s celebration & wake for the Gaia spacecraft – Anthony Brown of the Sterrewacht Leiden, chair of the Data Processing & Analysis Consortium, presenting some of the science highlights from the mission (so far). I’ve read a lot of these papers & have presented many the committees, but it always amazes me just how broad & revolutionary the science is, including but far beyond the Milky Way archaeology work 🙂👍<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/Gaia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaia</a>

Mark McCaughreanHere’s the moment that we lost radio contact with Gaia today 📡🛰️The memories of the same happening here at the end of the Rosetta mission in 2016 are strong 😭A sad day, but the science continues 👍Ad astra, Gaia ✨<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/Gaia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gaia</a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a>

Mark McCaughreanWow – didn’t think I’d be in tears today, but this message sent home from Gaia as it was shut down forever today hits hard 😭What you’re seeing is a map of the 106 CCD detectors that Gaia used to measure the positions of billions of stars in the Milky Way for the past 11 years 🛰️✨They were turned off in a special sequence … 😕<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a>

Mark McCaughreanA bittersweet but celebratory day at ESOC, the European Space Operations Centre, in Darmstadt 😭🎉📡Later this morning, the final commands will be sent to ESA’s Gaia spacecraft, ending the operational phase of its mission after 11 years 🚀🛰️ But the mission is by no means over – the mission’s amazing scientific insights into the formation & evolution of our Milky Way galaxy will only increase as new data catalogues are released in coming years 🙂👍<a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a>

Mark McCaughreanNiche question for astronomers & historians of astronomy, particularly those at Harvard perhaps.Can anyone tell me the birth & death dates of Edith F. Reilly, who worked with Bart Bok in the 1940's & co-authored the discovery paper on "small dark nebulae", now called "Bok globules"?I've looked online, but have drawn a blank. They'd be good to have for my book. <a href="https://adsabs.harvard.edu/pdf/1947ApJ...105..255B" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://adsabs.harvard.edu/pdf/1947ApJ...105..255B</a><a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://mastodon.social/tags/HistoryOfScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HistoryOfScience</a>

Mark McCaughreanWell, since it’s my binary 1000000th birthday today 🎉👴, it’s time let you know about the book I’ve been writing 📖Titled “111 Places in Space That You Must Not Miss”, it’s a tour guide to some fascinating locations in the Solar System, Milky Way, & beyond. Each “chapter” comes with a full page image & a description of what you’d see & learn if you could travel there 🚀🧑‍🚀Published by Emons Verlag, it’s out in July in the UK, September in the US 👇<a href="https://www.accartbooks.com/uk/book/111-places-in-space-that-you-must-not-miss/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.accartbooks.com/uk/book/111-places-in-space-that-you-must-not-miss/</a><a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceScience</a>

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