# Google Project Suncatcher: orbital data center program

> United States (United States), big tech. Stage 5 of 7: Own satellite flown. Its first prototype satellite, built with Planet, launched on SpaceX Transporter-18 on 2026-10-01 and Google says it is operating as expected.

- Canonical page: https://spacenexus.us/orbital-data-centers/google-project-suncatcher
- This Markdown version: https://spacenexus.us/orbital-data-centers/google-project-suncatcher.md
- Data as of: 2026-10-05 (last evidence review)
- How the numbers are made: https://spacenexus.us/orbital-data-centers#method

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## Stage evidence

- Its first prototype satellite, built with Planet, launched on SpaceX Transporter-18 on 2026-10-01 and Google says it is operating as expected. Sources: [Google](https://blog.google/innovation-and-ai/models-and-research/google-research/project-suncatcher-prototype/)

## Key figures

- TPUs on the prototype: 4 Trillium TPUs. Sources: [Tech Times](https://www.techtimes.com/articles/328482/20261002/google-project-suncatcher-reaches-orbit-cooling-not-radiation-now-defines-mission.htm); [Runtime Wire](https://runtimewire.com/article/google-project-suncatcher-tpu-satellite-orbit); [Payload](https://payloadspace.com/transporter-18-tests-the-building-blocks-of-orbital-data-centers/)
- Prototype solar power: 1 kW (approx., reported). Sources: [Tech Times](https://www.techtimes.com/articles/328482/20261002/google-project-suncatcher-reaches-orbit-cooling-not-radiation-now-defines-mission.htm); [Payload](https://payloadspace.com/transporter-18-tests-the-building-blocks-of-orbital-data-centers/)
- Launch price needed for cost parity: 200 USD per kg, mid-2030s (company claim). Sources: [Google Research](https://research.google/blog/exploring-a-space-based-scalable-ai-infrastructure-system-design/)
- Bench optical link: 1.6 Tbps (800 Gbps each way). Sources: [Google Research](https://research.google/blog/exploring-a-space-based-scalable-ai-infrastructure-system-design/)

## Approach

- Orbit: Dawn-dusk sun-synchronous LEO, about 650 km
- Architecture: Research moonshot: compact clusters of solar-powered TPU satellites flown hundreds of meters apart and linked by free-space optical links to act as one ML cluster
- Power: Prototype: about 1 kW solar (reported); full scale not specified
- Cooling: Passive radiative; prototype reportedly computes in about 15-minute bursts, then cools
- Compute: Google Trillium (v6e) TPUs; prototype reportedly carries 4 TPUs
- Customers: Internal research; no external customers

## Milestones

| Date | Status | Confidence | Milestone | Sources |
| --- | --- | --- | --- | --- |
| 2025-11-04 | achieved | Confirmed | Project Suncatcher announced with a preprint. TPU proton radiation results, a 1.6 Tbps bench optical link, an illustrative 81-satellite cluster and launch-cost analysis. | [Google Research](https://research.google/blog/exploring-a-space-based-scalable-ai-infrastructure-system-design/); [arXiv](https://arxiv.org/abs/2511.19468) |
| 2025-11-04 | achieved | Confirmed | Planet named as prototype partner; plan of two prototypes by early 2027 | [Google](https://blog.google/innovation-and-ai/technology/research/google-project-suncatcher/) |
| 2026-05-12 | achieved | Reported | Google reported in preliminary launch talks with SpaceX. Wall Street Journal report; no deal announced. | [GV Wire (WSJ report)](https://gvwire.com/2026/05/12/google-spacex-in-talks-to-explore-data-centers-in-orbit-wsj-reports/) |
| 2026-10-01 | achieved | Confirmed | First Suncatcher prototype launched on Transporter-18; contact confirmed. A single prototype satellite. Google says it is operating as expected. The New York Times (via IEEE ComSoc) and Payload describe it as an added minimum viable product ahead of the promised two-satellite mission, now stated as 2027. Reports (not Google) describe 4 TPUs, about 1 kW and 15 to 20 minute compute bursts. | [Google](https://blog.google/innovation-and-ai/models-and-research/google-research/project-suncatcher-prototype/); [Planet (Business Wire)](https://www.financialcontent.com/article/bizwire-2026-10-1-planet-launches-suncatcher-tanager-2-and-18-superdove-satellites); [Tech Times](https://www.techtimes.com/articles/328482/20261002/google-project-suncatcher-reaches-orbit-cooling-not-radiation-now-defines-mission.htm); [Payload](https://payloadspace.com/transporter-18-tests-the-building-blocks-of-orbital-data-centers/) |

## Announced next steps (as the organisation stated them)

- 2027 (Nov 2025 plan said "by early 2027"): Two-satellite mission testing inter-satellite laser links. Sources: [Tech Times](https://www.techtimes.com/articles/328482/20261002/google-project-suncatcher-reaches-orbit-cooling-not-radiation-now-defines-mission.htm); [The Motley Fool](https://www.fool.com/investing/2026/10/02/why-planet-labs-stock-popped-on-friday/)

## What to watch (SpaceNexus note, not a prediction)

What Google publishes from the prototype, especially thermal duty cycle, and whether the two-satellite laser-link mission flies in 2027.

## Cautions

- The 4-TPU, about 1 kW and 15 to 20 minute burst details come from secondary press (Tech Times, SiliconANGLE, Payload); Google's post only says "operating as expected".
- Google calls Suncatcher a long-horizon research project, not near-term infrastructure.
- Google's separate ~$920M/month SpaceX compute deal (TechCrunch, 2026-06-05) is ground-based, not orbital.

## People

- Travis Beals (lead author)
- Blaise Aguera y Arcas
- James Manyika

## Sources

- [Google](https://blog.google/innovation-and-ai/models-and-research/google-research/project-suncatcher-prototype/)
- [Tech Times](https://www.techtimes.com/articles/328482/20261002/google-project-suncatcher-reaches-orbit-cooling-not-radiation-now-defines-mission.htm)
- [Runtime Wire](https://runtimewire.com/article/google-project-suncatcher-tpu-satellite-orbit)
- [Payload](https://payloadspace.com/transporter-18-tests-the-building-blocks-of-orbital-data-centers/)
- [Google Research](https://research.google/blog/exploring-a-space-based-scalable-ai-infrastructure-system-design/)
- [arXiv](https://arxiv.org/abs/2511.19468)
- [Google](https://blog.google/innovation-and-ai/technology/research/google-project-suncatcher/)
- [GV Wire (WSJ report)](https://gvwire.com/2026/05/12/google-spacex-in-talks-to-explore-data-centers-in-orbit-wsj-reports/)
- [Planet (Business Wire)](https://www.financialcontent.com/article/bizwire-2026-10-1-planet-launches-suncatcher-tanager-2-and-18-superdove-satellites)
- [The Motley Fool](https://www.fool.com/investing/2026/10/02/why-planet-labs-stock-popped-on-friday/)

## Licence and credits

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