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#spaceenvironment

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Dr. John Barentine FRAS<p>"Satellites in low-Earth orbit eventually have to come down, and companies rely on the upper atmosphere to act as a waste incinerator. That’s exposed a blind spot in environmental laws: They only deal with pollution from human activities near Earth’s surface. But just as carbon dioxide and ozone-destroying compounds drifting up have created problems, so too can pollutants raining down at ever-increasing rates."</p><p> <a href="https://www.bloomberg.com/graphics/2025-space-orbit-satellites-pollution/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">bloomberg.com/graphics/2025-sp</span><span class="invisible">ace-orbit-satellites-pollution/</span></a></p><p><a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/Atmosphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atmosphere</span></a> <a href="https://astrodon.social/tags/Ozone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ozone</span></a></p>
Space Environmentalism<p>“The results presented above suggest these perceived benefits for constellations at low LEO altitudes may not be realised. The large numbers of satellites within these constellations and the extended period over which the constellations are maintained by replenishing satellites will mean that an unstable or even runaway environment at low LEO altitudes will continue to be a possibility.” </p><p><a href="https://www.researchgate.net/profile/Hugh-Lewis/publication/391093502_CRITICAL_NUMBER_O[…]ENT-OF-THE-STABILITY-OF-THE-ORBITAL-DEBRIS-ENVIRONMENT.pdf" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">researchgate.net/profile/Hugh-</span><span class="invisible">Lewis/publication/391093502_CRITICAL_NUMBER_O[…]ENT-OF-THE-STABILITY-OF-THE-ORBITAL-DEBRIS-ENVIRONMENT.pdf</span></a></p><p><a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a></p>
Dr. John Barentine FRAS<p>“Controlled deorbiting of the Falcon 9 second-stage over Arizona generated spectacular disturbances in the ionospheric plasma measured in total electron content ... Conical and concentric signatures, as well as electron depletion, are consistent with radiation of acoustic waves during Falcon 9 deorbit and/or potential release of constituents."<br> <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GL112364" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">agupubs.onlinelibrary.wiley.co</span><span class="invisible">m/doi/10.1029/2024GL112364</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/Atmosphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atmosphere</span></a> <a href="https://astrodon.social/tags/Ionosphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ionosphere</span></a> <a href="https://astrodon.social/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> <a href="https://astrodon.social/tags/Falcon9" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Falcon9</span></a></p>
Dr. John Barentine FRAS<p>"Space is vast, almost incalculably huge. And yet we’ve still found ways to pollute the area immediately surrounding our home planet. Whatever it is, we put it there, and now the area just outside of the Earth’s reach is riddled with garbage." (via <span class="h-card" translate="no"><a href="https://mstdn.social/@Vice" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>Vice</span></a></span>) </p><p><a href="https://www.vice.com/en/article/earths-space-junk-problem-is-getting-out-of-control/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">vice.com/en/article/earths-spa</span><span class="invisible">ce-junk-problem-is-getting-out-of-control/</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a> <a href="https://astrodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a></p>
Space Environmentalism<p>"The ideal of a dark and quiet sky is one many astronomers fight to protect. ... Preservation of the night sky across the electromagnetic spectrum is an extension of the stewardship of a human environment that now goes beyond our planet and reaches toward the cosmic ocean. It is also key to the future of astronomical discoveries."</p><p><a href="https://pubs.aip.org/physicstoday/online/44173/Threats-to-the-dark-and-quiet-sky" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">pubs.aip.org/physicstoday/onli</span><span class="invisible">ne/44173/Threats-to-the-dark-and-quiet-sky</span></a></p><p><a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/RadioAstronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RadioAstronomy</span></a> <a href="https://mastodon.social/tags/LightPollution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LightPollution</span></a> <a href="https://mastodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://mastodon.social/tags/SpaceEnvironmentalism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironmentalism</span></a></p>
Space Environmentalism<p>Proliferating <a href="https://mastodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a> threatens environmental monitoring satellites. </p><p>"About 70% to 80% of all the [<a href="https://mastodon.social/tags/climate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>climate</span></a> and environment] information that we get are from <a href="https://mastodon.social/tags/satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>satellites</span></a>. If those satellites in orbit are in danger, our ability to predict climate changes in the future […] is certainly under threat."</p><p><a href="https://www.dw.com/en/space-junk-damaging-satellites-how-do-we-remove-it/a-72117947" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">dw.com/en/space-junk-damaging-</span><span class="invisible">satellites-how-do-we-remove-it/a-72117947</span></a></p><p><a href="https://mastodon.social/tags/ClimateChange" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ClimateChange</span></a> <a href="https://mastodon.social/tags/RemoteSensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RemoteSensing</span></a> <a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a></p>
Space Environmentalism<p>New research on effects of reentries of 1000's of satellites on the Earth's <a href="https://mastodon.social/tags/atmosphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>atmosphere</span></a>: "We find that depending on reentry latitude and aerosol size distribution, a 20–40-Gg stratospheric burden of Al2O3 aerosols accumulates poleward of 30 N/S between 10 and 30 km. Small but statistically significant changes in mesospheric heating rates lead to 1.5 K-temperature anomalies in the mesosphere and the stratosphere at Southern Hemisphere high latitudes."</p><p><a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024JD042442" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">agupubs.onlinelibrary.wiley.co</span><span class="invisible">m/doi/full/10.1029/2024JD042442</span></a></p><p><a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a></p>
Space Environmentalism<p>It was only a matter of time before someone proposed merging <a href="https://mastodon.social/tags/SpaceWarfare" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWarfare</span></a> with the large satellite constellation model. But at what risk to the <a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a>?</p><p>"The concept would consist of up to 2,000 small satellites [which] would serve dual purposes as both detection systems and 'kill vehicles' that would de-orbit, target, and physically slam into threats without requiring missiles in space." Each satellite would be "roughly the size of a small refrigerator".</p><p><a href="https://spacenews.com/booz-allen-unveils-brilliant-swarms-satellite-concept-for-missile-defense/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">spacenews.com/booz-allen-unvei</span><span class="invisible">ls-brilliant-swarms-satellite-concept-for-missile-defense/</span></a></p>
Space Environmentalism<p>Astrospace interview with Tim Flohrer, head of the European Space Agency's Space Debris Office: "What is actually making our job more difficult today compared to a few years ago, is the rapid increase of active satellites. ... The effort we have to put today in this coordination activities is enormous, and rapidly increasing. And the complexity of the process results also in increased collision risks."</p><p><a href="https://www.astrospace.it/2025/03/26/present-and-future-of-space-debris-management-interview-with-tim-flohrer-head-of-the-esa-space-debris-office/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">astrospace.it/2025/03/26/prese</span><span class="invisible">nt-and-future-of-space-debris-management-interview-with-tim-flohrer-head-of-the-esa-space-debris-office/</span></a></p><p><a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://mastodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a> <a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://mastodon.social/tags/LEO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LEO</span></a></p>
Space Environmentalism<p>"A large glowing spiral visible in the night sky on Monday is believed to have been caused by a <a href="https://mastodon.social/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> rocket launch in the US. The cloud-like shape was visible for several minutes above the UK and elsewhere in Europe before fading."</p><p><a href="https://www.bbc.com/news/articles/c241073v66jo" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">bbc.com/news/articles/c241073v</span><span class="invisible">66jo</span></a></p><p><a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a></p>
Space Environmentalism<p>AST SpaceMobile has announced plans to launch FM1, a second-generation BlueBird satellite. It is about 223 square meters in size, or three times larger than first-gen BlueBirds. They will likely be the brightest artificial objects in the night sky after the ISS.</p><p><a href="https://www.pcmag.com/news/starlink-rival-ast-spacemobile-tips-new-satellite-prototype" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">pcmag.com/news/starlink-rival-</span><span class="invisible">ast-spacemobile-tips-new-satellite-prototype</span></a></p><p><a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a></p>
Space Environmentalism<p>"With the rapid expansion of commercial space flight, thousands of satellites are being launched each year. Yet few owners have plans to remove them from orbit in a controlled way. Everyone, everywhere — on Earth’s surface, flying in aeroplanes, as well as in space — is increasingly at risk from these projectiles. Space-faring nations and companies must urgently address this threat."</p><p><a href="https://www.nature.com/articles/d41586-025-00797-7" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/d41586-025</span><span class="invisible">-00797-7</span></a></p><p><a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://mastodon.social/tags/SpaceEnvironmentalism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironmentalism</span></a> <a href="https://mastodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/SpacePolicy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpacePolicy</span></a></p>
Space Environmentalism<p><a href="https://mastodon.social/tags/HelloWorld" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HelloWorld</span></a> 🌎</p><p>We are proud to announce the launch of the Center for Space Environmentalism! </p><p>CSE is a group of scholars and experts who inform and advocate for issues pertaining to the protection of the increasingly crowded <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> environment. It is intended in part to counter the prevailing narrative about the 'inevitable' commercial development and exploitation of outer space. We welcome dialog and interaction with anyone interested in these topics.</p><p><a href="https://mastodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a><br><a href="https://mastodon.social/tags/SpaceEnvironmentalism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironmentalism</span></a></p>
Dr. John Barentine FRAS<p>🚀 The Center for Space Environmentalism (CSE) has launched! </p><p>🪐 CSE is a group of scholars and experts who inform and advocate for issues pertaining to the protection of the increasingly crowded space environment. It is intended in part to counter the prevailing narrative about the 'inevitable' commercial development and exploitation of outer space. We welcome dialog and interaction with anyone interested in these topics.</p><p>💪🏼 I am proud to participate in this effort with my colleagues <span class="h-card" translate="no"><a href="https://astrodon.social/@salvabara" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>salvabara</span></a></span>, <span class="h-card" translate="no"><a href="https://mastodon.social/@planet4589" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>planet4589</span></a></span>, <span class="h-card" translate="no"><a href="https://mastodon.social/@sundogplanets" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>sundogplanets</span></a></span> and others. </p><p>🐘 Follow us on Mastodon: <a href="https://mastodon.social/@space_environmentalism" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mastodon.social/@space_environ</span><span class="invisible">mentalism</span></a></p><p>🌎 And visit our website: <a href="https://www.spaceenvironmentalism.org/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">spaceenvironmentalism.org/</span><span class="invisible"></span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/SpaceEnvironmentalism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironmentalism</span></a> <a href="https://astrodon.social/tags/SpacePolicy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpacePolicy</span></a> <a href="https://astrodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://astrodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a></p>
Dr. John Barentine FRAS<p>Thanks to Sharmila Kuthunur for this comprehensive Scientific American story on the status quo regarding space advertising, the potential harm to astronomy it poses, and what astronomers are doing to address the issue. </p><p><a href="https://www.scientificamerican.com/article/space-advertising-draws-astronomers-opposition/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">scientificamerican.com/article</span><span class="invisible">/space-advertising-draws-astronomers-opposition/</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceAdvertising" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceAdvertising</span></a> <a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/SpacePolicy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpacePolicy</span></a></p>
Dr. John Barentine FRAS<p>Three pieces by <span class="h-card" translate="no"><a href="https://mstdn.social/@Nature" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>Nature</span></a></span> today on dark and quiet skies.</p><p>A news feature looking at the state of solutions for satellite constellations:<br><a href="https://www.nature.com/articles/d41586-025-00792-y" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/d41586-025</span><span class="invisible">-00792-y</span></a></p><p>A related Editorial:<br><a href="https://www.nature.com/articles/d41586-025-00788-8" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/d41586-025</span><span class="invisible">-00788-8</span></a></p><p>And a Comment piece by two experts on the risk of space debris hitting the ground:<br><a href="https://www.nature.com/articles/d41586-025-00797-7" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/d41586-025</span><span class="invisible">-00797-7</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/Megaconstellations" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Megaconstellations</span></a> <a href="https://astrodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://astrodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a> <a href="https://astrodon.social/tags/DarkAndQuietSkies" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DarkAndQuietSkies</span></a></p>
Dr. John Barentine FRAS<p>"These two <a href="https://astrodon.social/tags/Starship" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Starship</span></a> explosions were a step backward in SpaceX’s development process, as the flights could not even repeat the successes of earlier test flights, and they perhaps show that the company’s engineers are not as infallible as fans of the company sometimes like to think."</p><p><a href="https://www.nytimes.com/2025/03/08/science/starship-spacex-explosion-elon-musk.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nytimes.com/2025/03/08/science</span><span class="invisible">/starship-spacex-explosion-elon-musk.html</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a></p>
Dr. John Barentine FRAS<p>Bad news for the impact of increasing rocket launches on the terrestrial <a href="https://astrodon.social/tags/environment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>environment</span></a>: "Our ‘ambitious’ scenario (2,040 launches/year) leads to a -0.29% depletion in annual-mean, near-global total column <a href="https://astrodon.social/tags/ozone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ozone</span></a>, relative to a simulation with no rocket launches. Antarctic springtime ozone decreases by 3.9%. Our ‘conservative’ scenario (884 launches/year) leads to a -0.17% annual depletion; current licensing rates suggest this scenario may be exceeded sooner than 2030."</p><p><a href="https://www.researchsquare.com/article/rs-5837547/v1" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">researchsquare.com/article/rs-</span><span class="invisible">5837547/v1</span></a></p><p><a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/SpaceEnvironmentalism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironmentalism</span></a> <a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceSustainability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceSustainability</span></a></p>
Dr. John Barentine FRAS<p>"It looks like there's no stopping the march of modern internet satellites, and many more look to be blighting our skies/potentially improving worldwide internet access in the near future."</p><p><a href="https://www.pcgamer.com/hardware/so-long-and-thanks-for-all-the-space-junk-china-based-starlink-competitor-spacesail-plans-to-have-15-000-satellites-deployed-by-2030-and-its-not-the-only-one-with-its-eyes-on-the-skies/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">pcgamer.com/hardware/so-long-a</span><span class="invisible">nd-thanks-for-all-the-space-junk-china-based-starlink-competitor-spacesail-plans-to-have-15-000-satellites-deployed-by-2030-and-its-not-the-only-one-with-its-eyes-on-the-skies/</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/China" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>China</span></a> <a href="https://astrodon.social/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> <a href="https://astrodon.social/tags/Starlink" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Starlink</span></a> <a href="https://astrodon.social/tags/SpaceSail" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceSail</span></a> <a href="https://astrodon.social/tags/Qianfan" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Qianfan</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://astrodon.social/tags/Internet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Internet</span></a></p>
Dr. John Barentine FRAS<p>Here is a run-down on Dark &amp; Quiet Skies activities at the recent UN COPUOS Science &amp; Technology Subcommittee meeting from <span class="h-card" translate="no"><a href="https://bird.makeup/users/iau_cps" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>iau_cps</span></a></span>: <a href="https://cps.iau.org/news/un-meeting-features-satellite-impact-on-astronomy/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">cps.iau.org/news/un-meeting-fe</span><span class="invisible">atures-satellite-impact-on-astronomy/</span></a> </p><p>"The discussion included remarks on the need to find balanced solutions, the urgent need for nations to support research on mitigations, considerations on the cultural heritage of the night sky, and the importance of space sustainability discussions within international bodies."</p><p><a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/UnitedNations" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>UnitedNations</span></a> <a href="https://astrodon.social/tags/COPUOS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>COPUOS</span></a> <a href="https://astrodon.social/tags/STSC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>STSC</span></a> <a href="https://astrodon.social/tags/SpaceEnvironment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceEnvironment</span></a> <a href="https://astrodon.social/tags/SpaceSustainability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceSustainability</span></a></p>
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