HORN
A spacecraft post-mission disposal device that deploys thin-film membranes to help prevent space debris.
Maturity not rated
Startup · Japan
BULL
HQ JapanFounded 20221-10 employees
With our vision of "making interplanetary travel "the norm" both on and off Earth," we are focusing on the cyclical structure of the space industry and planning a business framework that includes the development of anti-debris equipment.
Products1
Newest unveiled first. Open a product for its milestone timeline, components and sources.
Funding1 round
- Disclosed
- Undisclosed
- Latest
- UndisclosedSeed · Nov 25, 2025
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Nov 25, 2025 | Seed | Undisclosed | — | Frontier Innovations | — | Confirmed |
- UndisclosedNov 25, 2025
Totals add known amounts using recorded USD conversions where available; other currencies are shown separately. A ~ marks an estimated amount.
Sources5
Profile3
- 1CompanyBULL | Official Website
BULL · Supports Organization · description, Organization · name, Organization · website
“With our vision of "making interplanetary travel "the norm" both on and off Earth," we are focusing on the cyclical structure of the space industry and planning a business framework that includes the development of anti-debris equipment.”
- 2DatabaseBULL - PitchBook company profile
PitchBook · Supports Organization · employee range, Organization · founded year, Organization · linkedin url, Organization · x url
“employee_range: 1-10 (profile: 3)”
- 3
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "Japan", "hq_iso2": "JP", "id": "8863fa17-a00d-42fd-834f-b57ea570a07e"}”
Products1
- 4CompanySOLUTION｜BULL
BULL · Supports System
“HORN Debris prevention Device to prevent space debris / Preventing the deterioration of the space environment BULL is developing a device that autonomously prevents the generation of space debris from satellites and other spacecraft. This device, called PMD (Post Mission Disposal), when pre-installed on spacecraft, deploys thin-film membranes after its operation ends. Using atmospheric drag as braking forces, it slows down the spacecraft, significantly shortening its orbital lifetime and preventing the creation of space debris in the future”
Funding1
- 5
PR TIMES (BULL) · Nov 25, 2025 · Supports Funding round
“シードラウンドのリード投資家として出資させて頂きました”
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