--- title: Muon Space raises $250m from backers including Google... description: Muon Space closed a $250m Series C led by Eclipse, with Google and Salesforce among the backers, marking the largest funding round yet for a company best known... canonical: https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Muon Space raises $250m from backers including Google and Salesforce | daily.dev og:description: Muon Space closed a $250m Series C led by Eclipse, with Google and Salesforce among the backers, marking the largest funding round yet for a company best known... og:url: https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr og:image: https://api.daily.dev/og/posts/bOtAOnIwR.png og:image:alt: Muon Space raises $250m from backers including Google and Salesforce og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Muon Space raises $250m from backers including Google and Salesforce **[The Next Web](https://daily.dev/sources/tnw)** · 4 min read · 0 upvotes · 0 comments ## Summary Muon Space closed a $250m Series C led by Eclipse, with Google and Salesforce among the backers, marking the largest funding round yet for a company best known for the FireSat wildfire detection constellation built with Google Research and the Earth Fire Alliance. The company's real product is Halo, a platform for mass-manufacturing mission-specific satellite constellations, targeting 500 spacecraft a year from a San Jose facility, and it acquired thruster maker Starlight Engines to bring propulsion in-house. Muon has also shifted from climate and Earth observation toward defense work, building the Víndler RF-sensing constellation for Sierra Space. No valuation or equity/debt split was disclosed, and Salesforce's investment appears tied to a sustainability thesis rather than a product use case. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How much funding did Muon Space raise in its Series C round and who backed it? Muon Space raised $250m in a Series C round led by Eclipse, with Google and Salesforce among the backers. The round follows a $146m Series B closed in stages between August 2024 and June 2025, led in its final tranche by Congruent Ventures. No valuation or equity-to-debt split has been disclosed for the new round. _Track funding rounds shaping the satellite and climate tech industry as they happen on daily.dev._ ### What is Muon Space's Halo platform and what is the company's manufacturing target? Halo is Muon Space's platform for designing mission-specific satellite constellations, described by CEO Jonny Dyer as aiming to be the world's first automated, high-mix, high-volume constellation manufacturing system. The company targets producing 500 spacecraft a year from a 130,000-square-foot facility in San Jose, and acquired thruster maker Starlight Engines to bring propulsion in-house. _Engineers evaluating satellite manufacturing platforms follow developments like Halo on daily.dev._ ### What does the FireSat wildfire detection constellation do and who built it? FireSat is a wildfire detection satellite constellation built by Muon Space with the Earth Fire Alliance and Google Research, designed to spot fires while they are still classroom-sized rather than neighborhood-sized, and to revisit the same ground frequently enough for the detection to be actionable. Muon deployed the first three operational FireSat satellites in July. _Follow how climate-focused space infrastructure projects like FireSat evolve on daily.dev._ ## Similar posts on daily.dev - [Starcloud raised $250mn to buy rockets it cannot yet book](https://daily.dev/posts/starcloud-raised-250mn-to-buy-rockets-it-cannot-yet-book-wcfrv5smz) · The Next Web · 0 upvotes · 0 comments - [Rocket engine startup Impulse raises $500 million to hire people, not AI](https://daily.dev/posts/rocket-engine-startup-impulse-raises-500-million-to-hire-people-not-ai-zyeam9ydl) · TechCrunch · 0 upvotes · 0 comments - [Impulse Space raises $500M at $4.26B for orbital transfer vehicles](https://daily.dev/posts/impulse-space-raises-500m-at-4-26b-for-orbital-transfer-vehicles-qqmpnfde4) · The Next Web · 0 upvotes · 0 comments - [Helion, the Sam Altman-backed fusion startup, raises $465M to build a power plant for Microsoft](https://daily.dev/posts/helion-the-sam-altman-backed-fusion-startup-raises-465m-to-build-a-power-plant-for-microsoft-5ccb6ds0c) · TechCrunch · 0 upvotes · 0 comments --- Tags: [#google](https://daily.dev/tags/google), [#space-technology](https://daily.dev/tags/space-technology), [#venture-capital](https://daily.dev/tags/venture-capital) [View this post on daily.dev](https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Muon Space raises $250m from backers including Google and Salesforce","url":"https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr"},"datePublished":"2026-08-20T11:41:15.085Z","dateModified":"2026-10-15T02:23:39.059Z","description":"Muon Space closed a $250m Series C led by Eclipse, with Google and Salesforce among the backers, marking the largest funding round yet for a company best known...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e79caef3768a1d6fa32c4c4dbb4d0c09?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e79caef3768a1d6fa32c4c4dbb4d0c09?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The Next Web","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The Next Web","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tnw","url":"https://daily.dev/sources/tnw"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"google,space-technology,venture-capital","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Next Web","item":"https://daily.dev/sources/tnw"},{"@type":"ListItem","position":3,"name":"Muon Space raises $250m from backers including Google and Salesforce"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/muon-space-raises-250m-from-backers-including-google-and-salesforce-botaoniwr#faq","mainEntity":[{"@type":"Question","name":"How much funding did Muon Space raise in its Series C round and who backed it?","acceptedAnswer":{"@type":"Answer","text":"Muon Space raised $250m in a Series C round led by Eclipse, with Google and Salesforce among the backers. The round follows a $146m Series B closed in stages between August 2024 and June 2025, led in its final tranche by Congruent Ventures. No valuation or equity-to-debt split has been disclosed for the new round. Track funding rounds shaping the satellite and climate tech industry as they happen on daily.dev."}},{"@type":"Question","name":"What is Muon Space's Halo platform and what is the company's manufacturing target?","acceptedAnswer":{"@type":"Answer","text":"Halo is Muon Space's platform for designing mission-specific satellite constellations, described by CEO Jonny Dyer as aiming to be the world's first automated, high-mix, high-volume constellation manufacturing system. The company targets producing 500 spacecraft a year from a 130,000-square-foot facility in San Jose, and acquired thruster maker Starlight Engines to bring propulsion in-house. Engineers evaluating satellite manufacturing platforms follow developments like Halo on daily.dev."}},{"@type":"Question","name":"What does the FireSat wildfire detection constellation do and who built it?","acceptedAnswer":{"@type":"Answer","text":"FireSat is a wildfire detection satellite constellation built by Muon Space with the Earth Fire Alliance and Google Research, designed to spot fires while they are still classroom-sized rather than neighborhood-sized, and to revisit the same ground frequently enough for the detection to be actionable. Muon deployed the first three operational FireSat satellites in July. Follow how climate-focused space infrastructure projects like FireSat evolve on daily.dev."}}]} ```