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Mikko TuomiProxima Centauri is our nearest stellar neighbor and is known to be a very active M dwarf <a href="https://scicomm.xyz/tags/star" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#star</a>.Known to host a potentially <a href="https://scicomm.xyz/tags/habitable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#habitable</a> <a href="https://scicomm.xyz/tags/planet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#planet</a>, the star <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> exhibits very active <a href="https://scicomm.xyz/tags/flare" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#flare</a> activity in optical wavelengths.Depending on the energy and frequency of these flares, nearby planets in the habitable zone might be rendered uninhabitable as the flares strip planetary atmospheres of necessary ingredients such as ozone and water.<a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://scicomm.xyz/tags/astrobiology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrobiology</a> <a href="https://phys.org/news/2025-03-small-star-mighty-flares-alma.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://phys.org/news/2025-03-small-star-mighty-flares-alma.html</a>

Mikko TuomiExtremely Large Telescope should be able to gather spectra not just on <a href="https://scicomm.xyz/tags/exoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#exoplanets</a> that transit their <a href="https://scicomm.xyz/tags/star" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#star</a>, but also from non-transiting exoplanets via reflected starlight.It should be possible to make clear and accurate distinctions for nearby star systems.For the closest star, <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> Centauri, we could detect <a href="https://scicomm.xyz/tags/life" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#life</a> on an Earth-like world Proxima b with only 10 hours of observations.<a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://scicomm.xyz/tags/astrobiology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrobiology</a> <a href="https://phys.org/news/2025-03-extremely-large-telescope-hints-life.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://phys.org/news/2025-03-extremely-large-telescope-hints-life.html</a>

Mikko TuomiThe upcoming extremely large telescopes will provide the first opportunity to search for signs of <a href="https://scicomm.xyz/tags/habitability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#habitability</a> and <a href="https://scicomm.xyz/tags/life" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#life</a> on non-transiting <a href="https://scicomm.xyz/tags/terrestrial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#terrestrial</a> <a href="https://scicomm.xyz/tags/exoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#exoplanets</a>.For the most accessible nearby target, <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> Centauri b, we may be able to rule out a sub-Neptune <a href="https://scicomm.xyz/tags/atmosphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#atmosphere</a> in as little as a single hour of observing, and some <a href="https://scicomm.xyz/tags/biosignature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#biosignature</a> disequilibrium pairs may be accessible in 10 hours.<a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://scicomm.xyz/tags/astrobiology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrobiology</a> <a href="https://arxiv.org/abs/2503.08592" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://arxiv.org/abs/2503.08592</a>

ButterWordEntrar en su próxima reunión de clientes armados con estos 4 principios y salir con un cliente que paga <a href="https://mastodon.social/tags/armados" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#armados</a> <a href="https://mastodon.social/tags/cliente" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cliente</a> <a href="https://mastodon.social/tags/clientes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#clientes</a> <a href="https://mastodon.social/tags/con" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#con</a> <a href="https://mastodon.social/tags/Entrar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Entrar</a> <a href="https://mastodon.social/tags/Estos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Estos</a> <a href="https://mastodon.social/tags/PAGA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PAGA</a> <a href="https://mastodon.social/tags/principios" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#principios</a> <a href="https://mastodon.social/tags/pr%C3%B3xima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#próxima</a> <a href="https://mastodon.social/tags/reuni%C3%B3n" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reunión</a> <a href="https://mastodon.social/tags/salir" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#salir</a> <a href="https://mastodon.social/tags/ButterWord" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ButterWord</a> <a href="https://mastodon.social/tags/Spanish_News" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Spanish_News</a> Comenta tu opinión 👇 <a href="https://butterword.com/entrar-en-su-proxima-reunion-de-clientes-armados-con-estos-4-principios-y-salir-con-un-cliente-que-paga/?feed_id=13019&_unique_id=67de21629e346" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://butterword.com/entrar-en-su-proxima-reunion-de-clientes-armados-con-estos-4-principios-y-salir-con-un-cliente-que-paga/?feed_id=13019&_unique_id=67de21629e346</a>

Mikko TuomiThe closest <a href="https://scicomm.xyz/tags/star" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#star</a> system to the Sun is the Alpha <a href="https://scicomm.xyz/tags/Centauri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Centauri</a> system.Of the three <a href="https://scicomm.xyz/tags/stars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stars</a> in the system, the dimmest -- called <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> Centauri -- is actually the nearest star.The bright stars Alpha Centauri A and B form a close <a href="https://scicomm.xyz/tags/binary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#binary</a> as they are separated by only 23 times the Earth- Sun distance - slightly greater than the distance between Uranus and the Sun.<a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://scicomm.xyz/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://apod.nasa.gov/apod/ap250101.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://apod.nasa.gov/apod/ap250101.html</a>

BahnblogstelleProxima schließt Vertrag mit Alstom über Hochgeschwindigkeitszüge<a href="https://mastodon.social/tags/Alstom" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Alstom</a> <a href="https://mastodon.social/tags/AveliaHorizon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AveliaHorizon</a> <a href="https://mastodon.social/tags/Bahnindustrie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Bahnindustrie</a> <a href="https://mastodon.social/tags/Frankreich" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Frankreich</a> <a href="https://mastodon.social/tags/Hochgeschwindigkeitszug" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Hochgeschwindigkeitszug</a> <a href="https://mastodon.social/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> <a href="https://mastodon.social/tags/Vertrag" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Vertrag</a> <a href="https://bahnblogstelle.com/223280/proxima-schliesst-vertrag-mit-alstom-ueber-hochgeschwindigkeitszuege/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://bahnblogstelle.com/223280/proxima-schliesst-vertrag-mit-alstom-ueber-hochgeschwindigkeitszuege/</a>

Mikko TuomiAnimation showing the tiny spacecraft approaching <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> b.I wish I could live to see data from an encounter like this.<a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://scicomm.xyz/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#space</a> <a href="https://scicomm.xyz/tags/exoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#exoplanets</a> <a href="https://www.universetoday.com/168534/new-video-shows-how-tiny-spacecraft-will-swarm-proxima-centauri/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.universetoday.com/168534/new-video-shows-how-tiny-spacecraft-will-swarm-proxima-centauri/</a>

Mikko TuomiAnother poster by Suárez Mascareño et al., a summary of what we know about <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> Centauri planetary system.<a href="https://scicomm.xyz/tags/Exoplanets5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Exoplanets5</a> <a href="https://scicomm.xyz/tags/exoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#exoplanets</a>

Andy AldridgeI just watched Proxima (Alice Winocour, 2019) and rated it 6/10 ~ <a href="https://en.wikipedia.org/wiki/Proxima_%28film%29?wprov=sfla1" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Proxima_%28film%29?wprov=sfla1</a> <a href="https://mas.to/tags/films" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#films</a> <a href="https://mas.to/tags/cinema" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cinema</a> <a href="https://mas.to/tags/cinemastodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cinemastodon</a> <a href="https://mas.to/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> <a href="https://mas.to/tags/AliceWinocour" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AliceWinocour</a> <a href="https://mas.to/tags/EvaGreen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#EvaGreen</a>

Mikko TuomiTiny gram-scale <a href="https://scicomm.xyz/tags/interstellar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#interstellar</a> probes pushed by laser light are likely to be the only technology capable of reaching another <a href="https://scicomm.xyz/tags/star" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#star</a> this century.This requires a laser beamer to boost a few grams to relativistic speed, lasersails robust enough to survive launch, and terrestrial light buckets big enough to catch optical signals.The mission is to fly by the potentially <a href="https://scicomm.xyz/tags/habitable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#habitable</a> world <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> b, with a large autonomous swarm of 1000s of tiny probes.<a href="https://www.nasa.gov/general/swarming-proxima-centauri/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.nasa.gov/general/swarming-proxima-centauri/</a>

Mikko TuomiOur neighboring solar system is an odd one by any measure.It’s a triple system consisting of Alpha <a href="https://scicomm.xyz/tags/Centauri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Centauri</a> A and B, <a href="https://scicomm.xyz/tags/stars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stars</a> some 50% brighter and fainter than the Sun, respecticely.The third star in the system, <a href="https://scicomm.xyz/tags/Proxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proxima</a> Centauri, is a faint red dwarf about 0.2 light-years away.Proxima is the nearest of the three to Earth. It has two confirmed planets, including one in the habitable zone.<a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://scicomm.xyz/tags/exoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#exoplanets</a> <a href="https://daily.jstor.org/the-hunt-for-life-in-alpha-centauri/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://daily.jstor.org/the-hunt-for-life-in-alpha-centauri/</a>

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