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Relativity Space (YC W16) — Building humanity’s multiplanetary future

Relativity is building humanity’s multiplanetary future. We invented a new approach to design, build, and fly our own rockets, starting with Terran 1 – the world’s first entirely 3D printed rocket, and Terran R, our next generation medium-heavy lift reusable launch vehicle.

Relativity Space is a Y Combinator company in the Winter 2016 batch. Its directory entry describes it as: Building humanity’s multiplanetary future. The founder listed is Tim Ellis (Founder/CEO) (Y Combinator directory entry, November 21, 2015).

6 more companies from YC Winter 2016 ↓

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Relativity Space

New accelerator entry · 2015-11-21 · the record

Winter 2016
batch
2500
people
Growth
stage
United States of America
region
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What the record says

BatchWinter 2016
Announced2015-11-21
StageGrowth
StatusActive
Team size2500
IndustryIndustrials
Sub-industryIndustrials -> Aviation and Space
SectorsMachine Learning, Space Exploration, Rocketry, 3D Printing, Manufacturing
RegionsUnited States of America, America / Canada
BasedLos Angeles, CA, USA
HiringYes
Sitehttp://relativityspace.com
Founded2016
Previously known asRelativity Space, Relativity

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Also in YC Winter 2016

Same batch, Industrials first.

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In their words

Relativity is building humanity’s multiplanetary future. We invented a new approach to design, build, and fly our own rockets, starting with Terran 1 – the world’s first entirely 3D printed rocket, and Terran R, our next generation medium-heavy lift reusable launch vehicle. As a vertically integrated technology platform, Relativity is at the forefront of an inevitable shift toward software-defined manufacturing. By fusing 3D printing, artificial intelligence, and autonomous robotics, we are pioneering the factory of the future. Disrupting 60 years of aerospace, Relativity offers a radically simplified supply chain, building a rocket with fewer parts and faster iteration. We believe in a future where interplanetary life fundamentally expands the possibilities for human experience. Our long-term vision is to upgrade humanity’s industrial base on Earth and on Mars.

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What the Full Report on Relativity Space covers

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  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

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Relativity Space: Accepted into Y Combinator Winter 2016
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Permanent URL: https://mentionfox.com/funding/yc-relativity-space
Last updated 2026-10-29
Primary record: Y Combinator directory entry
Relativity Space (YC W16) — Building humanity’s multiplanetary future. MentionFox, 2026-10-29. https://mentionfox.com/funding/yc-relativity-space