New startup ideas · Physical world · Defense and space

startup idea

Nightglass

Subscription collision warnings for small satellite operators, from our own global sensor grid.

Nightglass builds and operates a worldwide grid of optical and passive RF sensor sites and sells the output as a per-satellite monthly subscription to small operators: custody tracking, orbit determination, conjunction warnings and maneuver screening in one console.

Software subscription
Small business
$1-10B market
Creates a new category
Global from day one

3/5

venture judge

231

similar startups, last 2 years (868 all-time)

83%

of 4 nearest real companies still alive

yes

8 matching federal grants and programs

Direction supported by government programs and grants

Test it before you build it

$800 · 4 weeks · 15 prospects

For $800 and 4 weeks, prove small satellite operators will prepay $1,500 for conjunction triage sharper than the free government screening they fly on today.

Riskiest assumption · An ops lead at a 5 to 50 person satellite operator finds free government conjunction screening too coarse to act on and will prepay real money for sharper, faster warnings.

1Focus group: who and where

The operations or GNC lead at a 5 to 50 person US satellite operator with 1 to 20 spacecraft in LEO, launched on a recent Transporter rideshare, who personally reads the conjunction data messages and has maneuvered, or agonized over not maneuvering, in the last quarter.

where to find 15 · FCC IBFS space station and experimental license filings plus published SpaceX Transporter rideshare manifests, a public directory of exactly who just launched (a list); SmallSat Alliance member companies (an association); warm introductions through YC space company founders and space focused investors such as the Space Capital portfolio network (a channel).

2Sell first, build later

A 90 day design partner pilot starting October 1: daily human reviewed conjunction triage on the operator's screening feed fused with their GPS telemetry, maneuver screening answered within 4 hours, and a weekly fleet risk summary for up to 3 spacecraft, delivered by the founders before any sensor site is built.

the ask · $1,500 prepaid for the 90 day pilot, converting to $300 per spacecraft per month afterward.

a real yes · A real yes is the $1,500 invoice paid or a countersigned pilot agreement with an October start date; interest, requests for a free evaluation of the data, and unpaid pilots do not count.

3Small experiments

The first one attacks the riskiest assumption; each ends with a number that says whether to run the next.

1. Conjunction pain audit calls
$200 · 14 days
Book 15 calls with ops leads sourced from warm intros and the FCC and Transporter lists. Structured 20 minute script: walk their last close approach, count engineer hours spent on conjunction triage in the past 90 days, and ask what the free screening failed to tell them. Close every call that reports real hours with an invitation to a paid pilot scoping session.
keep going if · 8 of 15 report 4 or more engineer hours a month on conjunction triage and 5 of 15 book a paid pilot scoping session
2. Prepaid design partner close
$500 · 21 days
Send each scoped prospect a one page pilot agreement: 90 days, daily founder run triage of their conjunction feed fused with their own GPS telemetry, a maneuver screening answer within 4 hours, weekly risk summary, up to 3 spacecraft, $1,500 invoiced up front. Founders deliver it manually with existing public catalogs, which is the point: the buyer is paying for the judgment before any sensor site exists. Budget covers the agreement template and a clickable console demo in Streamlit.
keep going if · 3 of 10 scoped prospects pay the $1,500 invoice or countersign with an October start date
3. Maneuver sharing pool test
$100 · 14 days
Ask every pilot buyer and 10 non buyers to sign a one page mutual data agreement contributing planned maneuvers and ephemerides into a common screening pool. This tests the network effect claim before any capex: if operators will not share into a pool of 13, the clearinghouse thesis is dead.
keep going if · 6 of 13 operators sign the data sharing agreement

4Collect a deposit up front

Tesla took $1,000 refundable reservations for the Model 3 and $100 for the Cybertruck before building either: the deposit is the measurement, not the revenue.

$1,500

per prospect, refundable

how · A paid design partner pilot invoiced 100 percent up front at $1,500 under a one page agreement signed by the operations lead; chosen because a 5 to 50 person operator can approve $1,500 without procurement, and prepayment is the only evidence that free government screening is not good enough for them. set up: Stripe Invoicing ↗

what it reserves · A slot in the first design partner cohort, priority sensor tasking for their orbits when the grid goes live, and a locked $300 per spacecraft per month rate for year one of the full service

refund · Full refund on request within the first 30 days if the warnings are not more actionable than their current screening.

target · 3 prepaid $1,500 pilots from 15 conversations within 30 days

Go: build it if

3 or more prepaid $1,500 pilots from 15 conversations within 4 weeks, and 6 or more of 13 operators signed onto the shared maneuver pool.

Kill: stop if

0 or 1 pilots prepaid from 15 conversations, or fewer than 4 of 15 operators report 4 or more engineer hours a month lost to conjunction triage, or fewer than 3 of 13 will sign the data sharing agreement.

5 Scripts to run itoutreach message, landing copy, deposit terms · click to open

outreach message

Your first spacecraft are up and the conjunction messages land at 2am with covariances too wide to act on. I run a conjunction desk for small operators: we fuse your GPS telemetry with your screening feed and hand you one clear act or ignore call per event, with maneuver screening answered inside 4 hours. I am taking 5 design partners at $1,500 for a 90 day pilot starting October 1. Do you have 20 minutes this week to walk me through your last close approach?

landing page

Conjunction warnings you can act on, for small operators $1,500 prepaid 90 day pilot: daily triage, 4 hour maneuver screening, and $300 per spacecraft per month locked for year one Book a scoping call

deposit terms

The $1,500 pilot fee is invoiced up front and covers 90 days of daily conjunction triage and maneuver screening for up to 3 spacecraft, starting October 1. It reserves your slot in the first design partner cohort and locks a $300 per spacecraft per month rate for year one of the full service. Full refund on request within the first 30 days if our warnings are not more actionable than your current screening.

Would you run this test?

One tap. The yes-share feeds the Demand pillar of this idea's score; nobody sees who answered.

Budgets are out-of-pocket estimates for a team of one to three, US market. Size the deposit to the deal, and check the terms before taking money in a regulated line.

Scorecard

One score that balances how trendy the idea is, the demand for it and its potential for 100x, with competition measured relative to every other idea in the catalog. Recent startup trends first, government priorities second.

Idea Score, 0-100 · raw 38.4 x 1.61

Crowded

competition: more crowded than 100% of ideas · headwind x0.50

+4.9

government priorities, secondary (205 matching grants)

Trend

Is the wave forming now? 2025-26 entrants vs 2023-24, rounds since 2025, the sector's live-batch direction, the 2026 trend analyst.

Entrants 2025-26 vs 2023-24 (similar companies)55
Rounds announced 2025+ in the sector16
Rounds announced 2025+ matching the idea99
Sector direction (live batch)100
2026 trend analyst25

Demand

Does anyone want it? YC's current RFS, companies already paid for something similar, the operator judge, founders' yes-rate in decks, readers who would run the test.

YC asks for it (current RFS: idea / sector)100
Someone already pays (similar companies, recent / all-time)100
Operator judge: real pain50

100x potential

Can it return a fund? The venture judge (double weight), market-size and moat axes, neighbours still alive, the technologist judge.

Venture judge50
Market size axis33
Moat axis100
Neighbours still alive59
Technologist judge75

Score = 100 x cbrt(Trend x Demand x 100x) x (1 - 0.5 x crowding) + government bonus (max 5), calibrated so the 95th-percentile idea scores 90 (order never changes). A geometric mean: a weak pillar cannot be papered over. Percentiles are among the 272 ideas in the catalog; the terms matched were subscription, collision, warnings, satellite, operators, global, builds, operates.

The idea in full

What: Nightglass builds and operates a worldwide grid of optical and passive RF sensor sites and sells the output as a per-satellite monthly subscription to small operators: custody tracking, orbit determination, conjunction warnings and maneuver screening in one console. The buyer is a 5 to 50 person satellite company that cannot afford its own tracking and currently relies on free government screening that is too coarse to act on. Subscribers upload planned maneuvers and their own GPS telemetry, which feeds back into the catalog, so every operator's warnings sharpen as more operators join.
Why now: The last three cohorts are stacking objects into orbit faster than anyone is tracking them: Dispatch is putting satellites up for manufacturing in space, Beyond Reach Labs is growing football-field-sized solar arrays in orbit, Exosat is building a sovereign constellation, and GRU Space is planning lunar construction. Cascade Space raising the idea of a commercial alternative to the Deep Space Network shows ground infrastructure is now venture-fundable, and 25 new companies entered this cluster in 2026 alone.
Wedge: first customer and entry point: Stand up four sensor sites across three longitudes and sell custody-and-conjunction subscriptions to ten YC-adjacent satellite operators launching their first constellation, priced per spacecraft per month.
Path to 100x: Space situational awareness and traffic coordination is a $1-10B subscription market today and grows with every object launched, and it is a network business because the value of a catalog is the fraction of operators who share their maneuver plans into it. The first grid to reach majority participation becomes the clearinghouse everyone must join to be screened against, which creates the coordination category and the underwriting dataset behind orbital insurance.
Ceiling: Sensor site capital and operations scale with coverage while small-operator subscription budgets stay thin, keeping gross margin and revenue per customer below what a $1B outcome needs.
Closest real companies, as the generator saw them: Cascade Space builds ground stations for commanding deep space missions, which is a communications service; Nightglass never talks to the spacecraft and sells observation and warning instead. Constellation Space sells operating software to large network operators and would consume Nightglass data rather than produce it.
Main risk: Government space traffic coordination improves enough that free public conjunction data is good enough to fly on.

Five judges

Each judge scores every idea in the catalog with a named rubric; the venture judge decides whether a card is shown at all (4-5 is venture-grade).

Venture investor
3/5
Clearinghouse network effect is real, but sensor site capex scaling against thin 5-to-50-person operator budgets fights the $1B outcome.
Bootstrapper
2/5
Building four sensor sites across three longitudes is heavy capex against ten small operators with thin per-spacecraft budgets.
Operator
3/5
A 5 to 50 person operator has a real conjunction problem, but free government screening is the incumbent and sensor sites are capital-heavy.
Technologist
4/5
Operating a passive optical and RF grid across three longitudes and doing real orbit determination from it is deep work that improves per subscriber telemetry.
Risk
3/5
Owns its own sensor grid rather than renting data, but free government conjunction screening improving is a policy event it cannot hedge.
trends
2/5
Congestion has grown since 2021 and tracking incumbents exist; citing 25 new space companies is demand context, not a 2025-2026 enabling shift.

Similar startups in the directory

Companies whose pitch matches most of the idea's terms (subscription, collision, warnings, satellite, operators, global, builds, operates): 868 all-time, 231 from the last two years. Same matching as Idea Check.

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Instinctyc W26 · 2026 · Fintechalive
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Constellation Spaceyc W26 · 2026 · Defense and spacealive
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Run this as an Idea Check →

The generator's reference companies

Real companies the model named as closest when it wrote the card, with their fate. A check mark is a company the radar could verify in its directory.

Public money in this direction

US federal grants, SBIR/STTR awards and open opportunities from the radar's public-money feed, matched to the idea's terms; the sector totals give the context.

grants and programs matching the idea

startup-relevant grants in Defense and space

$41M

awarded in the sector, tracked

opportunities open now in the sector

SBIR Phase II: Development of a Modular Ultrasound Transducer Array Drying Systemawardhigh relevance
National Science Foundation · SBIR Phase II · $1M · posted 2026-09-14
SBIR Phase II: Dynamic OneSource Geospatial Information Systemawardhigh relevance
National Science Foundation · SBIR Phase II · $1M · posted 2026-08-27
SBIR Phase II: Advanced Manufacturing for Aerogels for Battery Safety Applicationsawardhigh relevance
National Science Foundation · SBIR Phase II · $1M · posted 2026-08-04
Pioneering continuous cell disruption for efficient commercial scale virus-like particle (VLP) biomanufacturingawardhigh relevance
NIH / NIAID · SBIR phase II · $306K · posted 2025-08-21
Pioneering continuous cell disruption for efficient commercial scale virus-like particle (VLP) biomanufacturingawardhigh relevance
NIH / NIAID · SBIR phase II · $1M · posted 2025-08-21
High-flow portable oxygen concentrator for long-term oxygen therapyawardhigh relevance
NIH / NHLBI · SBIR phase II · $1M · posted 2025-08-01
Collaborative Research: VINES: Track 2: VICEROY: Vehicular Integrated Sensing and Communications for Enhanced Road Safetyawardhigh relevance
National Science Foundation · TIP-CHIPS KTA-6 Communications · $4M · posted 2026-09-22
Automated Platform for Critical Quality Analytics in Cell Therapy Manufacturingawardhigh relevance
NIH / NCI · SBIR phase I · $307K · posted 2026-09-22

All public money by sector →

Market signal

What the radar sees in Defense and space: new companies by cohort year, the forming YC batch, and outcomes since the February snapshot.

Defense and space · 16 → 27 → 45 → 41 → 39 new companies 2022 → 2026 · 94% aliveYC F26 live: 4 in this cluster, 3% of the batch (was 4% in S26)Since February, of 63 YC companies here: 0 acquired, 0 shut down, 10 rewrote their pitch

Defense and space: companies, trend and grants →

Design attributes

The card is one cell of a designed set: every axis below was chosen before the text was written, and the text had to realize it.

Buyer: Small business
Business model: Software subscription
Path to 100x: Creates a new category
Market size: $1-10B market
Capital intensity: Capital-heavy (hardware, bio, infra)
Speed to revenue: Revenue in 1-3 years
Technical depth: Deep tech: ML, hardware, bio
Go-to-market: Founder-led sales
Moat: Network effects
Geography: Global from day one
Regulation: Some regulation
Vibe: Boring business