# SpaceNexus

> SpaceNexus (spacenexus.us) is an independent space-industry intelligence site for enthusiasts and professionals: the launch schedule with live countdowns, a launch slip ledger and on-time record, the US vs China Race to the Moon tracker, space company profiles and the Space Score, funding rounds, space jobs, space weather, charts and guides. Numbers carry an as-of date and a named source; our own data is CC BY 4.0.

Most pages are free to read without an account. The site sells advertising and labelled partner articles, and money never changes data: no payment affects a score, ranking, data table, search order or fact-check, and paid content never appears in our open feeds, our MCP server or this file. Every computed number is explained on the methodology page; errors can be reported on the corrections page.

## Questions and the page that answers them

- [When is the next launch?](https://spacenexus.us/mission-control): Mission Control: the launch schedule
- [What does a launch cost?](https://spacenexus.us/guide/space-launch-cost-comparison): Space launch cost comparison
- [Which rockets fly, and what can they lift?](https://spacenexus.us/rockets): Every rocket
- [Can I see the ISS tonight?](https://spacenexus.us/tonight): ISS passes tonight
- [Who is hiring in space?](https://spacenexus.us/jobs): Space jobs
- [How do I get SpaceNexus by email?](https://spacenexus.us/newsletter): Newsletters
- [How is the space market doing?](https://spacenexus.us/space-stocks): Space stocks
- [What rules apply, and what is changing?](https://spacenexus.us/compliance): Compliance hub (free to read; some tools on it need a Pro plan)
- [Who is ahead in the race to the Moon, the US or China?](https://spacenexus.us/moon): Race to the Moon tracker
- [When is the next Moon landing?](https://spacenexus.us/moon/next-landing): The next crewed and robotic landing attempts
- [Which rockets and providers are most often delayed?](https://spacenexus.us/launch-slips): Launch slip ledger
- [Which launch providers fly on time?](https://spacenexus.us/launch-ledger): Launch on-time record
- [Which launches are parked on December 31 and slip into next year?](https://spacenexus.us/december-31-cliff/2026): The December 31 Cliff
- [What is the space weather right now?](https://spacenexus.us/space-weather): Space weather now: Kp, solar wind, flare outlook
- [How many satellites are in orbit?](https://spacenexus.us/how-many-satellites): Live orbital census
- [How much are space startups raising?](https://spacenexus.us/funding-tracker): Funding rounds and the funding tracker
- [Which space companies rank highest?](https://spacenexus.us/rankings/space-score-top-25): Space Score Top 25
- [What is happening with Starship?](https://spacenexus.us/starship): Starship tracker
- [Did space agencies and companies keep their promises?](https://spacenexus.us/promises): Promise Ledger
- [How fast is the world launching this year?](https://spacenexus.us/launch-cadence): Launch Cadence Index

## Live data pages

- [Next 50 launches](https://spacenexus.us/mission-control): The next 50 orbital launches on the manifest, plus launches flown in the last 30 days with their outcome (success, partial failure, failure), each with our recorded date changes and a link to its page. JSON: https://spacenexus.us/api/open/launches
- [Launch slip ledger](https://spacenexus.us/launch-slips): Recent launch date changes as our ledger recorded them (moves of one launch on one UTC day netted into one row), with totals since recording began. JSON: https://spacenexus.us/api/open/launch-slips
- [Space Score top 25](https://spacenexus.us/rankings/space-score-top-25): The 25 highest-ranked companies on the current Space Score board, with tier, confidence, data coverage and pillar scores, and a link to the method. JSON: https://spacenexus.us/api/open/space-score
- [Race to the Moon tracker](https://spacenexus.us/moon): US vs China: milestones demonstrated on both 8-rung ladders, the projection call with its headline-scenario date bands, official targets and the next uncrewed landing attempt. JSON: https://spacenexus.us/api/open/moon-race
- [Recent funding rounds](https://spacenexus.us/funding-tracker): Closed private funding rounds into space companies in the last 90 days (up to 50, newest first) with the headline summary. IPOs, offerings, debt, grants, acquisitions and "Raising now" intentions are not included. JSON: https://spacenexus.us/api/open/funding-rounds

## Open data, API and MCP server

- [Open data feeds index](https://spacenexus.us/api/open): free JSON feeds, no key or account, CORS open, 60 requests a minute per IP. Every response carries its licence, per-field credits and dataAsOf.
- [MCP server](https://spacenexus.us/developer/ai): https://spacenexus.us/api/mcp (Streamable HTTP, read-only, no account, 120 requests a minute per IP). Tools: next_launches, launch_slips, launch_on_time_record, recent_funding_rounds, company_lookup, space_weather_now, moon_race_status, space_jobs_count, search_site.
- [Free datasets](https://spacenexus.us/datasets): CSV downloads of companies, funding rounds, the orbital launch log, vehicle reliability, the slip ledger, daily hiring counts and executive moves (free account).
- [Lunar mission catalogue](https://spacenexus.us/moon/missions): CSV https://spacenexus.us/moon/missions.csv (no account)
- [Moon landing attempts](https://spacenexus.us/moon/landings): CSV https://spacenexus.us/moon/landings.csv (no account)
- [Moon promise ledger](https://spacenexus.us/moon/promise-ledger): CSV https://spacenexus.us/moon/promise-ledger.csv (no account)
- [Developer API](https://spacenexus.us/developer): the keyed API for bulk and historical access, with an OpenAPI spec.

## How the numbers are made

- [Money never changes data](https://spacenexus.us/methodology#money-wall): We sell advertising, sponsorships and labelled partner articles. None of it can change a score, ranking, tracker, data table, search order or fact-check.
- [Space Score](https://spacenexus.us/methodology#space-score): A 0 to 1000 composite score for space companies, built from five pillars of measured data.
- [Rankings: Space Score Top 25 and Fastest-Hiring](https://spacenexus.us/methodology#rankings): Dated editions: the quarterly Space Score Top 25 and the monthly fastest-hiring companies.
- [Pure-Play Index](https://spacenexus.us/methodology#pure-play-index): The day's average move of listed space companies, with defense primes and diversified groups left out.
- [Funding rounds and the funding tracker](https://spacenexus.us/methodology#funding-rounds): Every private space funding round we can source, and the totals built from them.
- [Launch schedule and outcomes](https://spacenexus.us/methodology#launch-data): Every upcoming launch, its countdown, and how each flight ended.
- [Launch slips](https://spacenexus.us/methodology#launch-slips): A ledger of every time a tracked launch date moved, recorded as it happened.
- [Launch Cadence Index](https://spacenexus.us/methodology#launch-cadence): Launches flown this year against the same date last year, by provider and country.
- [Jobs counts](https://spacenexus.us/methodology#jobs): The number of open space jobs and the employers behind them.
- [Hiring Index and hiring trends](https://spacenexus.us/methodology#hiring-index): How space hiring is moving, month by month and week by week.
- [Satellite passes and the satellite map](https://spacenexus.us/methodology#satellite-passes): When the ISS and other satellites cross your sky, and whether you can see them.
- [Space weather and aurora](https://spacenexus.us/methodology#space-weather): Kp index, solar wind, flare outlook and aurora forecast.
- [Race to the Moon tracker](https://spacenexus.us/methodology#moon-race): Who leads on demonstrated lunar milestones: the United States or China.
- [Promise Ledger](https://spacenexus.us/methodology#promise-ledger): Dated public commitments about spaceflight by agencies, companies and executives, with the exact words, the primary source, the deadline and the outcome, scored by the same rules for everyone.
- [Recurring releases](https://spacenexus.us/methodology#releases): Named, dated data releases on a fixed calendar.
- [AI-drafted content, and how it is labelled](https://spacenexus.us/methodology#ai-content): Some analysis is drafted by AI. It is always labelled, and it never draws on paid content.
- [Curated assessments](https://spacenexus.us/methodology#curated): A few pages are assessed by hand rather than computed, and say so.
- [Corrections](https://spacenexus.us/methodology#corrections): When a number or a sentence is wrong, we fix it and say so, with a date.

## Key pages

### Launches

- [Launch Schedule & Live](https://spacenexus.us/mission-control): Every upcoming launch, live countdowns and streams
- [Rockets](https://spacenexus.us/rockets): Every rocket: cost, payload, record, next launch
- [Launches by Site](https://spacenexus.us/launches): Cape, Vandenberg, Starbase… month by month
- [Launch Cadence Index](https://spacenexus.us/launch-cadence): Live YoY launch pace by provider and country: citable
- [Slip Explorer](https://spacenexus.us/launch-slips): Announced vs actual launch dates: a ledger nobody can backfill
- [Launch On-Time Record](https://spacenexus.us/launch-ledger): Which rockets fly when they say: on time within 1 and 7 days, by provider, vehicle and site
- [Slip Index editions](https://spacenexus.us/launch-slips/editions): The monthly Launch Slip Index, the weekly Slip Watch and the quarterly On-Time Report, frozen
- [The December 31 Cliff, 2026](https://spacenexus.us/december-31-cliff/2026): Every launch parked on Dec 31 at year precision, and what became of each
- [Launch trip planner: Cape Canaveral](https://spacenexus.us/launches/cape-canaveral/trip-planner): Pick your Florida dates: every launch in them, local times, day or night, where to watch
- [Launch trip planner: Vandenberg](https://spacenexus.us/launches/vandenberg/trip-planner): Pick your California dates: every launch in them, local times, day or night, where to watch
- [Launch trip planner: Starbase](https://spacenexus.us/launches/starbase/trip-planner): Pick your Texas dates: every launch in them, local times, day or night, where to watch
- [Launch trip planner: Wallops](https://spacenexus.us/launches/wallops/trip-planner): Pick your Virginia dates: every launch in them, local times, day or night, where to watch
- [Starship Tracker](https://spacenexus.us/starship): Flight history, program roles and news
- [Artemis Tracker](https://spacenexus.us/artemis): Moon program milestones and hardware
- [Race to the Moon](https://spacenexus.us/moon): US vs China lunar tracker and every Moon mission since 1958
- [Moon Mission Catalogue](https://spacenexus.us/moon/missions): Every lunar mission by country, type and outcome: filterable, with a CSV
- [When Is the Next Moon Landing?](https://spacenexus.us/moon/next-landing): The next crewed and robotic landing attempts, with official targets
- [Every Moon Landing Attempt](https://spacenexus.us/moon/landings): Soft landings, tip-overs and crashes, crewed and robotic, with a CSV
- [Moon Promise Ledger](https://spacenexus.us/moon/promise-ledger): Dated US and Chinese space promises, met or late
- [Satellite Tracker](https://spacenexus.us/satellites): Live orbital map: ISS, Starlink and more
- [How Many Satellites?](https://spacenexus.us/how-many-satellites): Live orbital census: payloads, debris, constellations
- [What's Overhead](https://spacenexus.us/whats-overhead): When the ISS passes over your house
- [Launch Predictions](https://spacenexus.us/predictions): Will it fly this window? Stake your call
- [Alerts](https://spacenexus.us/alerts): Launch reminders, scrubs and outcomes, storms, markets: by email, push or your Slack/Discord
- [ISS Passes Tonight](https://spacenexus.us/tonight): Tonight's visible ISS, Tiangong and Hubble passes, city by city

### News

- [News Feed](https://spacenexus.us/news): Latest space industry news, curated
- [Blog](https://spacenexus.us/blog): Guides, analysis and market reports
- [AI Insights](https://spacenexus.us/ai-insights): Daily analysis, fact-checked before publishing
- [Newsletters](https://spacenexus.us/newsletter): Week in Space Data on Fridays and SpaceNexus AM on weekdays: free by email
- [Charts](https://spacenexus.us/chart): Launches, funding and jobs, drawn from our own trackers
- [Podcasts](https://spacenexus.us/podcasts): Space podcast directory
- [Space Defense](https://spacenexus.us/space-defense): Military space and national security
- [Editorial Calendar](https://spacenexus.us/editorial/calendar): The dated editions our ledgers publish, and when the next one lands
- [Promise Ledger](https://spacenexus.us/promises): Dated spaceflight commitments by agencies, companies and executives: exact words, sources and outcomes
- [Promise Tracker: Starship and Mars](https://spacenexus.us/promises/starship-mars): Starship and the 2026 Mars window: every dated claim, sourced
- [Promise Tracker: Commercial stations](https://spacenexus.us/promises/commercial-stations): Haven-1, Axiom, Starlab and Orbital Reef against the ISS deorbit
- [Promise Tracker: Megaconstellations](https://spacenexus.us/promises/megaconstellations): Amazon Leo, Starlink, AST SpaceMobile, Telesat and Qianfan against their FCC deadlines
- [State of Space 2026](https://spacenexus.us/state-of-space/2026): The year in numbers from our ledgers: launches, real slips, funding, hiring, promises kept

### Markets

- [Space Stocks](https://spacenexus.us/space-stocks): Live quotes, ETFs and industry benchmarks
- [Markets Daily](https://spacenexus.us/markets-daily): The Pure-Play Index and the sector day, free
- [Company Profiles](https://spacenexus.us/company-profiles): The space industry directory
- [Rankings](https://spacenexus.us/rankings): Space Score Top 25 each quarter, fastest-hiring companies each month
- [Recurring Releases](https://spacenexus.us/releases): Named, dated releases on a fixed calendar: investors, launch cadence and slips, supply-chain concentration
- [Funding Rounds & M&A](https://spacenexus.us/funding-tracker): Live rounds, deals and acquisitions
- [Startups & Pre-IPO](https://spacenexus.us/startups): Private companies, rounds and IPO watch
- [Compare Companies](https://spacenexus.us/compare): Head-to-head: SpaceX vs Blue Origin and 50 more
- [Investors](https://spacenexus.us/investors): Investor directory and deal flow
- [Free Datasets](https://spacenexus.us/datasets): Companies, rounds, launch log: CSV, free with attribution

### Business

- [Contracts & Opportunities](https://spacenexus.us/procurement): Contracts, grants, SBIR and budgets
- [Regulatory Radar](https://spacenexus.us/regulatory-radar): Live rules, enforcement and deadlines
- [Jobs](https://spacenexus.us/jobs): Thousands of space jobs, synced daily
- [Hiring Trends](https://spacenexus.us/hiring-trends): Who is hiring: weekly velocity from daily snapshots
- [Service Providers](https://spacenexus.us/marketplace): Verified space service directory

### Learn

- [Learning Zone](https://spacenexus.us/learn): Six tracks, calculators and quizzes
- [Daily Space Puzzle](https://spacenexus.us/puzzle): One sourced space question a day, two tries, a result to share
- [Guides](https://spacenexus.us/guide): Launch costs, schedules, the industry explained
- [Launch Cost Comparison](https://spacenexus.us/guide/space-launch-cost-comparison): Every rocket's price and cost per kg, compared
- [Cost to launch a satellite](https://spacenexus.us/guide/cost-to-launch/satellite): By size and orbit, 2026 prices
- [Launch Cost Calculator](https://spacenexus.us/launch-cost-calculator): Compare launch costs across vehicles
- [Mission Simulator](https://spacenexus.us/mission-simulator): Fly a mission end to end
- [Build Guides](https://spacenexus.us/build-guides): CanSat, balloon and ISS-receiver projects
- [Space History](https://spacenexus.us/history): Searchable milestones
- [Glossary](https://spacenexus.us/glossary): Key terms defined

### Engineering & Operations

- [Space Weather Now](https://spacenexus.us/space-weather): Kp, solar wind, Bz, 3-day flare outlook and the flare log

### Reference & Data

- [Methodology](https://spacenexus.us/methodology): How every computed number is made: Space Score, funding, jobs, launches, passes
- [SpaceNexus in AI assistants (MCP)](https://spacenexus.us/developer/ai): Add our launch, funding, company and space weather data to Claude, ChatGPT or any MCP client: free, read-only

## How to cite SpaceNexus

- Attribution line: "Data: SpaceNexus (spacenexus.us)", with a link to the page the figure came from.
- Quote the as-of date shown beside a number (every open feed and MCP answer carries dataAsOf). Launch dates are UTC and can move; our launch pages show how firm each date is.
- Our own data is CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Third-party facts are credited field by field and are not relicensed: launch facts come from Launch Library 2 by The Space Devs; each funding round names its source; space weather is NOAA SWPC and NASA DONKI data.
- Found an error? Report it at https://spacenexus.us/corrections; corrections are logged with dates.

## Optional

- [Editorial standards](https://spacenexus.us/editorial-standards)
- [Corrections](https://spacenexus.us/corrections)
- [Advertising policy](https://spacenexus.us/advertising-policy)
- [Data sources](https://spacenexus.us/data-sources)
- [About SpaceNexus](https://spacenexus.us/about)
- [Pricing](https://spacenexus.us/pricing): free for enthusiasts; Pro adds business tools
- [Space Tycoon](https://spacenexus.us/space-tycoon/about): a free browser strategy game built on space economics (not a data source)
- [Everything on one page](https://spacenexus.us/llms-full.txt): the full site directory, methods in detail and the MCP tool arguments