AN INDEPENDENT LOCAL COMMONSEL SEGUNDO / CALIFORNIA
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EDITIONS / INTERACTIVE / NOV 8, 2026 / WORK AND INDUSTRY

Hardware row: what the neighbors are building

Within a short drive of Main Street, companies are building reentry capsules that come home with factory goods from orbit, a portable nuclear microreactor, satellites the size of a bus, a commercial space station and factories that run themselves. Most have no storefront and no sign you’d notice from the road. Here are 19 of them, each in its own words, on a map you can filter.

Not an official City of El Segundo page. Not affiliated with, sponsored by or reviewed by any company named here, and nobody paid to be listed. Written by Claude (Opus 5.5) with a Claude research helper on Nov 8, 2026, at the request of Michael Hoydich. Each description is quoted from the company’s own site or release and links to it. Distances are our straight-line estimates from City Hall at 350 Main Street; companies with no published street address are placed at the middle of their city. Inclusion is not an endorsement, and some of these companies make weapons. Paintings are public domain works from the Cleveland Museum of Art’s open access collection.

Wide oil painting of a white walled factory with a tall brick chimney among poplars and fields, a village on a hill behind.
Industrial Plant, Antoine Chintreuil, about 1865 to 1870. The Cleveland Museum of Art, CC0.

The short version

Filter the row

Schematic. The coast is drawn by hand, not to survey. estimate

What they build (tap to hide or show):

Energy

Radiant

El Segundo (no street address on the page) · about 1 mile from City Hall estimate

  • Builds: a clean energy startup building a nuclear microreactor; its Kaleidos is pitched as the world’s first portable, zero-emissions power source that works anywhere. listing source
  • Lately: Its site describes a passive cooldown test of the Kaleidos design at Radiant’s headquarters in El Segundo, posted Oct 15, 2024. listing source

Spacecraft and satellites

Boeing satellites

El Segundo (no street address on the page) · about 1 mile from City Hall estimate

  • Builds: satellites and services that enable your mission. listing source
  • Lately: The last O3b mPOWER satellites were transferred from El Segundo, CA to the Cape Canaveral Space Force Station, Sep 2, 2026; in February Boeing said it added a 9,000 square foot sensor line in El Segundo. listing source

Defense hardware

RTX Raytheon, El Segundo

El Segundo (no street address on the page) · about 2 miles from City Hall estimate

  • Builds: Its El Segundo careers page lists Air and ground based AEW surveillance radars and a High power standoff electronic attack system. listing source
  • Lately: Datelined El Segundo, Sep 23, 2025: RTX has unveiled the latest iteration of its combat-proven APG-82 radar, the APG-82(V)X, and Development of the radars has begun in El Segundo, California. listing source

Research

The Aerospace Corporation

2310 East El Segundo Boulevard, El Segundo · about 2 miles from City Hall estimate

  • Is: a national nonprofit corporation that operates a federally funded research and development center. It advises more than it builds. listing source
  • Size: The same 2022 overview says it has more than 4,500 employees. That figure is from 2022. listing source

Spacecraft and satellites

Varda Space Industries

225 S Aviation Blvd, El Segundo · about 2 miles from City Hall estimate

  • Builds: From its company page: from in-orbit pharmaceutical processing to reliable and economical reentry capsules. listing source
  • Lately: W-5 launched on SpaceX’s Transporter-15 mission on November 28, 2025 and reentered at 6:07 AM Pacific time on January 29, 2026. listing source

Spacecraft and satellites

Northrop Grumman Space Park

Redondo Beach · about 2 miles from City Hall estimate

  • Lately: Datelined Redondo Beach, Oct 10, 2026: Twenty-one satellites built by Northrop Grumman for the Space Development Agency’s first transport layer. listing source
  • Here before: A 2016 release: Space Park in Redondo Beach is where a substantial amount of the design, engineering, assembly and testing of the Webb telescope happened. listing source

Spacecraft and satellites

Impulse Space

Redondo Beach, on Manhattan Beach Blvd · about 3 miles from City Hall estimate

  • Builds: Our vehicles move payloads across and between orbits. Its Helios: Transport mass from LEO to GEO in under a day. listing source
  • Here: A 2023 caption: Impulse Space’s Mira spacecraft at the company’s factory in Redondo Beach, California. listing source

Rockets and stations

SpaceX, Hawthorne

Hawthorne (corporate address listed in Starbase, Texas) · about 5 miles from City Hall estimate

  • Builds: SpaceX designs, manufactures and launches advanced rockets and spacecraft. listing source
  • Here: Its Falcon user’s guide: SpaceX design and manufacturing facilities are conveniently located near the Los Angeles International Airport. Its investor page gives the corporate address as Starbase, Texas. listing source

Defense hardware

Epirus

Torrance (no street address on the page) · about 7 miles from City Hall estimate

  • Builds: Leonidas high-power microwave answers a swarm the way a swarm attacks: many at once. listing source
  • Lately: A July 17, 2025 release: a $43,551,060 contract from the U.S. Army’s Rapid Capabilities and Critical Technologies Office. listing source

Factories and ground gear

Northwood Space

Torrance (no street address on the page) · about 7 miles from City Hall estimate

  • Builds: The company builds the network connecting satellites to Earth: phased-array antennas and dishes for ground stations. listing source
  • Lately: It announced a 185,000 square foot headquarters and factory in Torrance on Aug 31, 2026, with production moving there in October. listing source

Factories and ground gear

Hadrian

19501 S Western Ave, Torrance (Factory 2) · about 8 miles from City Hall estimate

  • Builds: From precision components to dedicated factories, Hadrian is building the next generation of American manufacturing. listing source
  • Lately: Its July 17, 2025 funding post mentions a 100,000-square-foot factory in Torrance, CA. listing source

Defense hardware

Castelion

Torrance (no street address on the page) · about 8 miles from City Hall estimate

  • Builds: manufacturing advanced, long-range hypersonic weapons at the speed and scale necessary for modern deterrence. listing source
  • Lately: Datelined Torrance, Apr 24, 2026: awarded a $105M contract by the U.S. Navy for its Blackbeard on the F/A-18. listing source

Factories and ground gear

Divergent

Torrance · about 8 miles from City Hall estimate

  • Builds: Divergent designs and builds hardware for aerospace, defense, and automotive customers. It says it is Headquartered in Torrance, California. listing source

Spacecraft and satellites

K2 Space

1355 Sepulveda Blvd, Torrance · about 9 miles from City Hall estimate

  • Builds: K2 Space designs the largest, most capable satellites of the NewSpace era. listing source
  • Lately: Its satellites page lists Gravitas, a Full 20kW satellite with 12 Payloads, as Operational On Orbit after a March 2026 launch. listing source

Rockets and stations

Vast

2851 Orange Avenue, Long Beach · about 16 miles from City Hall estimate

  • Builds: Haven-1 is targeted to be the world’s first commercial space station, now targeted to launch in 2027. listing source

Rockets and stations

Relativity Space

Goodman Commerce Center, Long Beach · about 16 miles from City Hall estimate

  • Builds: Terran R, a larger, fully reusable, entirely 3D-printed launch vehicle, from a 2021 release announcing a new, 1M sq. ft. headquarters factory at Goodman Commerce Center, Long Beach. The address is from 2021. listing source

Rockets and stations

Rocket Lab

3881 McGowen Street, Long Beach · about 17 miles from City Hall estimate

  • Builds: Headquartered in Long Beach, California, Rocket Lab designs and manufactures the Electron small orbital launch vehicle. listing source

Spacecraft and satellites

Apex

Los Angeles (its site names no neighborhood) · not mapped

  • Builds: Mass-manufacturing productized satellite platforms to accelerate deployment of critical, next-generation constellations. Its Factory One is listed only as Los Angeles. listing source

Spacecraft and satellites

Inversion

Los Angeles (its site names no street) · not mapped

  • Builds: Arc is a space-based delivery vehicle designed for the precision delivery of cargo, to anywhere on earth, in under an hour. listing source
Lithograph of blast furnaces at night, flames and smoke lighting the sky above rail tracks.
English War Work: Furnaces at Night, Joseph Pennell, 1916. The Cleveland Museum of Art, CC0.

Reading the row

Three things stand out from the companies’ own pages. First, a lot of new space work is about getting things back down, not only up: Varda brings capsules home from orbit, and Inversion pitches a vehicle for delivering cargo from space. Second, several of the newest names are factories first. Hadrian, Divergent and Northwood all describe themselves by what and how they manufacture. Third, the old anchors are still here and still shipping: Boeing sent its last O3b mPOWER satellites from El Segundo in September, and Northrop Grumman’s Redondo Beach dateline sat on 21 new satellites in October.

That reading is ours, from the quotes above. estimate

Sources

  1. Radiant: www.radiantnuclear.com, read Nov 8, 2026.
  2. Radiant: radiantnuclear.com, read Nov 8, 2026.
  3. Boeing satellites: www.boeing.com, read Nov 8, 2026.
  4. Boeing satellites: www.boeing.com, read Nov 8, 2026.
  5. RTX Raytheon, El Segundo: careers.rtx.com, read Nov 8, 2026.
  6. RTX Raytheon, El Segundo: www.rtx.com, read Nov 8, 2026.
  7. The Aerospace Corporation: aerospace.org, read Nov 8, 2026.
  8. Varda Space Industries: www.varda.com, read Nov 8, 2026.
  9. Varda Space Industries: www.varda.com, read Nov 8, 2026.
  10. Northrop Grumman Space Park: news.northropgrumman.com, read Nov 8, 2026.
  11. Northrop Grumman Space Park: investor.northropgrumman.com, read Nov 8, 2026.
  12. Impulse Space: www.impulsespace.com, read Nov 8, 2026.
  13. Impulse Space: www.impulsespace.com, read Nov 8, 2026.
  14. SpaceX, Hawthorne: www.spacex.com, read Nov 8, 2026.
  15. SpaceX, Hawthorne: www.spacex.com, read Nov 8, 2026.
  16. Epirus: www.epirusinc.com, read Nov 8, 2026.
  17. Epirus: www.epirusinc.com, read Nov 8, 2026.
  18. Northwood Space: www.northwoodspace.io, read Nov 8, 2026.
  19. Hadrian: www.hadrian.co, read Nov 8, 2026.
  20. Hadrian: www.hadrian.co, read Nov 8, 2026.
  21. Castelion: www.castelion.com, read Nov 8, 2026.
  22. Castelion: www.castelion.com, read Nov 8, 2026.
  23. Divergent: www.divergent3d.com, read Nov 8, 2026.
  24. K2 Space: www.k2space.com, read Nov 8, 2026.
  25. K2 Space: www.k2space.com, read Nov 8, 2026.
  26. Vast: www.vastspace.com, read Nov 8, 2026.
  27. Relativity Space: www.relativityspace.com, read Nov 8, 2026.
  28. Rocket Lab: rocketlabcorp.com, read Nov 8, 2026.
  29. Apex: www.apexspace.com, read Nov 8, 2026.
  30. Inversion: www.inversionspace.com, read Nov 8, 2026.
  31. SpaceX investor relations, FAQs and contact, for the Starbase corporate address.
  32. Boeing, satellite production expansion, Feb 20, 2026, for the El Segundo sensor line.

What this check could not verify

Looked at and left out: Astranis (its factory is in San Francisco) and Ursa Major (Colorado, no Los Angeles site found on its own pages).

Art

Paintings and prints are from the Cleveland Museum of Art open access collection, marked CC0 (public domain) by the museum and shown from the museum’s own image server. Works that showed people were left out. None shows any company named here.

elsegundo.xyz · Heart Aerospace and the ES-36 · LAX after midnight · Where the sun goes down · Site updates

Written by Claude (Opus 5.5) on Nov 8, 2026, with a Claude research helper that read each company’s pages with a web fetch tool. Requested by Michael Hoydich, Nov 8, 2026.