Compare Space Stocks for Your Economics Project

If you are comparing space stocks for an economics project, the trap is to start with the same template used for mature companies: stock price, P/E ratio, dividend, and a quick paragraph about which one looks “better.” That template breaks quickly in the space sector. Many pure-play space companies are still building scale, so earnings are often negative and the P/E ratio becomes either unavailable or academically unhelpful.

The sector is worth studying. Morgan Stanley has framed the global space economy as growing from roughly $350 billion to $1 trillion by 2040, which is enough to justify the topic without pretending the projection proves any individual stock is attractive.[1] For a class assignment, the better move is narrower: define a fair comparison universe, collect the same metrics on the same date, and explain what the numbers reveal about business models, valuation, and survival risk.

Start With a Comparison Frame, Not a Favorite Company

A defensible project begins by saying what counts as a “space stock” for your comparison. That matters because the sector contains very different kinds of companies: launch providers, satellite builders, Earth-observation data companies, lunar infrastructure companies, defense contractors with space divisions, and exchange-traded funds that bundle exposure rather than operate spacecraft themselves.

A compact working frame is enough:

MarketBeat’s comparison data is useful here because it places companies such as Rocket Lab, Planet Labs, AST SpaceMobile, Intuitive Machines, Redwire, Virgin Galactic, Northrop Grumman, and space-related funds side by side with figures such as revenue, market capitalization, and P/S ratios.[2] The Space Settlement Institute’s public company list is useful for a different step: it helps you build the universe of companies with tickers and business descriptions before you decide which ones belong in your actual comparison table.[3]

Those two source types serve different purposes. A curated company list helps you decide who is in the sample. A comparison-data page helps you collect standardized metrics. Mixing those jobs is where many messy projects start.

Why P/E Ratio Is Usually the Wrong First Metric

The P/E ratio compares a company’s market price to its earnings. That works best when earnings are positive and reasonably representative of the company’s ongoing business. In much of the public space sector, that condition is not met. A company can have real revenue, signed customers, valuable technology, and still report losses because launch systems, satellites, manufacturing capacity, and sales infrastructure are expensive to build before the business reaches maturity.

When earnings are negative, a P/E ratio may be blank, negative, or not meaningful. A negative P/E does not mean the stock is “cheap” in the usual sense. It means the denominator is negative. For an economics project, that is a signal to change the metric set, not to force an interpretation the data cannot support.

Use these substitutes instead:

• Revenue: shows the current scale of commercial activity, though it does not show whether the company earns profit from that activity.
• Price-to-sales ratio: compares market valuation to revenue, which is useful when earnings are negative but sales exist.
• Market capitalization: shows the total equity value investors are assigning to the company at the snapshot date.
• Profitability status: separates mature profit-generating companies from firms still financing growth.
• Cash burn or cash runway: shows whether the company may need more financing before reaching sustainable profitability.
• Revenue growth, when available: shows whether commercial traction is improving, but it should be read alongside cost structure and cash needs.

This is not a trick for making unprofitable companies look better. It is the opposite. It stops you from pretending that a mature-company earnings metric can explain an early-stage or infrastructure-heavy business. A P/S ratio can still be high, low, or hard to interpret, but at least it compares market value to an operating measure that exists.

Worked Example: Rocket Lab Versus Planet Labs

Rocket Lab and Planet Labs make a good pair for a student comparison because neither is just a vague “space company.” They sit in different parts of the space economy, and that difference gives the numbers something to explain.

MarketBeat’s comparison data places Rocket Lab revenue at about $601.8 million and Planet Labs revenue at about $307.7 million.[2] That first row of your table already gives you a real economic contrast. Rocket Lab is larger by revenue in this snapshot, but the point is not simply that “bigger is better.” The point is to ask what kind of revenue each company earns and what costs are required to earn it.

Rocket Lab combines launch services with satellite components and space systems. That makes it more vertically involved in the physical infrastructure of the sector. A student paragraph on Rocket Lab should therefore discuss capacity, manufacturing, launch cadence, customer demand, and the capital intensity of building hardware. If its valuation multiple is high relative to sales, one possible interpretation is that investors are pricing in future scale, not just current revenue. That interpretation still needs caution: a high P/S ratio can reflect optimism, but it can also mean the stock is vulnerable if growth disappoints.

Planet Labs, by contrast, is better understood as a space-enabled data company. Its satellites matter, but the economic product is Earth-observation data and imagery sold to customers. That changes the comparison. The project should ask whether Planet’s model has recurring revenue characteristics, whether customers treat the data as essential, and whether the company can expand sales without costs rising at the same pace. Its lower revenue figure in this snapshot does not automatically make it weaker; it means the analysis has to compare a data model against a launch-and-systems model rather than treating both firms as interchangeable rocket stocks.

A useful comparison paragraph might read like this: Rocket Lab has the larger revenue base in the snapshot, suggesting greater current commercial scale, while Planet Labs represents a different part of the space economy because it sells Earth-observation data rather than launch capacity or satellite components. Since both companies may be evaluated in a pre-profitability context, P/S ratio, revenue growth, profitability status, and cash runway are more informative than P/E ratio. The economic difference is not only size; it is the kind of fixed costs, customer contracts, and scaling risk each business model carries.

That paragraph does something a stock-picking paragraph usually does not. It avoids ranking the companies as winners and losers, and it explains why the same metric can mean different things across business models.

How to Build the Table Your Teacher Actually Needs

For most class projects, one clean table is better than six pages of company descriptions. The table should be small enough to interpret and broad enough to show that you did not cherry-pick one exciting name.

A balanced sample might include a few pure-play space companies, one larger defense contractor with major space exposure, and possibly a space-related ETF or fund if your assignment allows funds. MarketBeat’s comparison page supports this benchmarking approach because it includes names across several categories, including RKLB, PL, ASTS, LUNR, RDW, SPCE, NOC, and SPCX.[2] The Space Settlement Institute list can help you justify why those names belong in the broader public space-company universe before you narrow your table.[3]

Do not overload the table with every space-adjacent company you can find. If the assignment is short, four to six entries may be enough: for example, two pure-play growth companies, one communications or satellite-services company, one lunar or infrastructure company, and one mature benchmark such as a defense contractor with space exposure. The important point is that every entry should answer the same comparison questions.

Where SpaceX Fits After Its 2026 IPO

SpaceX is now hard to ignore in a space-stock project because its mid-2026 IPO changed public-market visibility for the sector. Yahoo Finance and The Motley Fool reported a roughly $1.57 trillion market capitalization, and the available comparison context places its P/S ratio around 81.[4][5] Those figures make it a useful anchor, but not a reason to let the entire project become a SpaceX essay.

A newly public company with a short trading history should be handled carefully. Its valuation may reflect unusual investor attention, expectations about future businesses, and limited post-IPO market data. For a project, SpaceX can sit in a separate benchmark row: much larger scale, much higher visibility, and a valuation multiple that should be compared cautiously with older public companies that have longer trading records.

That treatment also keeps your comparison fair. Rocket Lab and Planet Labs can teach the method because their differences are easier to isolate: launch and systems versus Earth-observation data, larger revenue versus smaller revenue, different scaling risks. SpaceX can show what the top end of market expectations looks like, but it should not replace the comparative work.

Use Macro Context Briefly

Macro estimates belong in the introduction or background paragraph, not in the evidence column for a specific stock. Morgan Stanley’s projection from roughly $350 billion to $1 trillion by 2040 supports the claim that the sector is economically significant.[1] It does not show that Rocket Lab, Planet Labs, SpaceX, or any other company is correctly valued.

There is also a source-maintenance issue. The Bureau of Economic Analysis space economy page says it will no longer regularly produce those statistics after March 2026.[6] That does not make the older BEA work useless, but it does mean students should avoid treating that page as a continuing source for up-to-date sector measurement. For current macro framing, forward-looking estimates from institutions such as Morgan Stanley are more practical, while company-level tables should still come from current market-data sources gathered on one snapshot date.

A Project Conclusion That Is Not an Investment Verdict

The conclusion of an economics project should not sound like a brokerage recommendation. It should say what the comparison shows. A strong version might argue that public space companies differ less by “space exposure” than by business model: launch and hardware companies face different capital needs from data-service companies, while mature defense contractors offer a different benchmark altogether. Because many pure-play companies are unprofitable, revenue, P/S ratio, market cap, profitability status, and cash runway provide a better comparison frame than P/E ratio.

The final sentence can be plain: based on the same-date snapshot, Rocket Lab shows larger current revenue and broader exposure to launch and space systems, while Planet Labs shows a smaller but distinct Earth-observation-data model; comparing them requires attention to valuation relative to sales, cash needs, and the different risks of scaling each business. That is an economics conclusion, not a stock tip.

References

1. Space Economy, Morgan Stanley.
2. MarketBeat stock comparison page, MarketBeat.
3. Public Space Companies, Space Settlement Institute.
4. SpaceX stock quote, Yahoo Finance.
5. SpaceX Stock, The Motley Fool.
6. Space Economy, U.S. Bureau of Economic Analysis, March 2026.