Space exploration returns far more value than most people realize, and it does so at a surprisingly low cost. NASA’s entire budget accounts for roughly 0.35% of U.S. federal spending, yet that fraction of a percent fuels an industry projected to reach $1.8 trillion globally by 2035, up from $630 billion in 2023. The case for investing in space touches everything from the economy and job creation to climate science, medical breakthroughs, and the long-term survival of the species.
The Economic Return Dwarfs the Investment
The global space economy is growing at roughly twice the rate of overall GDP, according to McKinsey’s 2024 analysis. That $630 billion in 2023 splits roughly in half between “backbone” applications (satellite communications, GPS, weather data) and newer “reach” applications (commercial launches, space tourism, in-orbit manufacturing). The projected jump to $1.8 trillion by 2035 is driven largely by private-sector expansion into areas like satellite broadband, Earth observation services, and on-orbit research.
Job creation follows the money. Canada’s space sector, a relatively small player globally, hit an all-time high of nearly 14,000 direct jobs in 2023, a 5.9% jump in a single year. When you count supply-chain and consumer-spending effects, that number nearly doubles to over 26,000 jobs supported. Ninety percent of those positions sit in the private sector. Scale that pattern up to the United States, Europe, and the rapidly growing programs in India, Japan, and the UAE, and space investment supports hundreds of thousands of high-skill jobs worldwide.
Technologies That Come Back to Earth
Space programs have a long track record of producing technologies that end up in hospitals, homes, and everyday products. NASA-funded research originally aimed at tracking ballistic missiles led to breakthroughs in laser eye surgery. Durable polymers developed for high-speed atmospheric re-entry found their way into consumer goods. Cardiac resynchronization devices, which keep failing hearts beating in rhythm, trace part of their development to space-related engineering challenges.
The pattern continues today. Research aboard the International Space Station is advancing drug delivery through nanoparticle encapsulation, a technique that protects medications from breaking down too quickly in the body and improves how much of a drug actually reaches its target. Microgravity also lets researchers run pharmaceutical experiments that are impossible on the ground, comparing how drugs behave in space versus on Earth using tiny dried blood and urine samples. These methods could eventually make personalized medicine more practical, not just for astronauts, but for patients everywhere.
Climate Monitoring Depends on Space
About two-thirds of the essential climate variables scientists use to track global warming can only be measured from space. Sea-level rise, ice-sheet thickness, atmospheric gas concentrations, ocean temperatures: satellites provide the continuous, planet-wide data that ground stations simply cannot. The IPCC’s latest assessment report singled out satellite observation as irreplaceable for understanding climate change.
Without sustained investment in Earth-observing satellites, climate models lose accuracy, early warning systems for extreme weather degrade, and governments lose the data they need to make informed policy. Space investment, in this sense, is climate investment.
Planetary Defense Is No Longer Science Fiction
In 2022, NASA’s DART spacecraft slammed into a small asteroid called Dimorphos at roughly 14,000 miles per hour. The goal was to see whether a kinetic impact could change an asteroid’s orbit. It worked, and it worked dramatically. Dimorphos’ orbital period around its parent asteroid shifted by 32 minutes, more than 25 times the minimum NASA had defined as a success (73 seconds). That result, confirmed with a margin of uncertainty of just plus or minus two minutes, proved that humanity now has a viable tool for deflecting a dangerous asteroid before it reaches Earth.
The cost of a major asteroid impact would be measured in trillions of dollars and potentially millions of lives. The DART mission cost about $325 million. Planetary defense is one of the clearest cost-benefit arguments in all of public spending, but it only works if we invest in the detection systems and deflection technology ahead of time.
Resources Beyond Earth
Earth’s supply of certain critical minerals is finite, and extraction is becoming more environmentally destructive. Near-Earth asteroids contain enormous quantities of metals. The asteroid 16 Psyche, currently being studied by a NASA orbiter, has been estimated to hold $700 quintillion worth of gold alone. That number is so large it’s essentially meaningless as a market value (flooding Earth with that much gold would collapse prices instantly), but it illustrates a broader point: space contains raw materials on a scale that makes terrestrial mining look trivial.
The practical applications are still years away, but the groundwork being laid now in orbital logistics, low-cost launch systems, and robotic operations is what will eventually make asteroid mining viable. Countries and companies investing in these capabilities today are positioning themselves for a resource economy that extends beyond the planet.
The Cost in Context
The most common objection to space investment is that the money would be better spent on problems here on Earth. That framing misses two things. First, the money is spent on Earth. It pays engineers, scientists, manufacturers, and technicians. It funds university research and supports supply chains across dozens of industries. Canada’s data shows that for every direct space job, nearly one additional job is created in the wider economy.
Second, the amount is remarkably small. NASA’s 2025 budget of roughly $24.9 billion represents about 0.35% of total U.S. federal spending. Since the 2010s, that figure has hovered between 0.3% and 0.4%. For context, Americans spend more annually on pizza than the government spends on space exploration. The question isn’t really whether we can afford space investment. It’s whether we can afford not to, given what it returns in economic growth, technological innovation, climate data, and planetary safety.
What’s at Stake Long Term
Every argument above deals with near-term, measurable returns. The longer view is harder to quantify but arguably more important. A species confined to one planet is vulnerable to extinction-level events, whether from asteroid impacts, supervolcanic eruptions, or self-inflicted crises. Establishing a sustainable human presence beyond Earth is the only known hedge against those risks.
Getting there requires decades of sustained investment in propulsion, life-support systems, space medicine, and orbital infrastructure. The work happening now on the ISS, through the Artemis lunar program, and in private companies developing reusable rockets is building the foundation. Cutting that investment doesn’t just slow progress. It erases institutional knowledge, scatters trained workforces, and forces future generations to rebuild capabilities from scratch at far greater cost.