Former NASA Science Chief Thomas Zurbuchen Returns to Zurich to Boost Europe’s Space Ambitions

From James Webb to ETH Zurich: Thomas Zurbuchen’s Return

Thomas Zurbuchen is the Swiss physicist who spent years running NASA science missions, including the James Webb Space Telescope, the project he calls one of the most important in history because it shows the sky in an entirely new way. The telescope cost around $10 billion and took 25 years of planning before its launch from French Guiana on Christmas Day 2021. But it was only one piece of a much larger portfolio: since becoming NASA’s science director in 2016, Zurbuchen worked on almost 130 missions, from the Parker Solar Probe and the DART asteroid-deflection test to Mars rovers and the Juno mission.

Zurbuchen grew up in a religious household in Switzerland and studied astrophysics in Bern against his parents’ wishes, earning his doctorate in 1996. After years at NASA, he returned home in 2023 to lead the space programme at ETH Zurich, one of Europe’s top universities. His stated goal is to bring the experience and ambition of the US space agency to a continent he believes underestimates its own potential in space entrepreneurship.

The numbers underline the gap he describes. NASA’s budget was $4.251 billion in 1969, the year of the Moon landing, then rose to $19.3 billion in 2016 and $23.271 billion in 2021. In the same year, the European Space Agency’s budget was around €6.49 billion. Zurbuchen estimates that global space research spending now stands at roughly $300 billion and expects it to triple over the next 20 to 30 years. That projected growth is the opportunity he wants Europe to take seriously.

Why Zurbuchen Sees Europe Missing a Growing Space Economy

Zurbuchen’s move from NASA to ETH Zurich is a personal career change, but it also marks a strategic bet on European space research. The story’s real weight lies in three tensions: a widening transatlantic funding gap, the rise of private launch and satellite companies, and the growing link between space data and climate science.

The NASA–ESA funding gap

NASA’s budget of $23.271 billion in 2021 was more than three times ESA’s €6.49 billion. Zurbuchen’s estimate that global space spending could triple to roughly $900 billion within two or three decades assumes that demand for space-based science and services keeps rising. If that happens, Europe’s current spending level would leave it a small player in a much larger market. Zurbuchen is clear that Europe has the potential to become an important actor, but only if it stops underestimating its own entrepreneurial capacity.

Commercial players are changing the cost curve

SpaceX, Rocket Lab and Planet Labs appear in the article as evidence that private capital can accelerate space science. Rocket Lab operates a launch site in New Zealand and regularly sends satellites and rockets into orbit. Planet Labs produces daily Earth imagery that has documented sea-level change, weather patterns and wartime destruction in occupied Ukraine. Zurbuchen argues that when private companies invest alongside states, more science can be done for less public money because private capital joins the pot. This is a structural shift, not just a tourism story.

Climate research is the strongest industrial argument

NASA has been observing Earth since its first weather satellite, Tiros, launched in 1960. Zurbuchen argues that many problems, especially climate problems, can only be solved from space. The article also notes the longer history of spin-offs: memory foam came from Apollo pilot seat development, and digital image sensors now used in every smartphone were first built for Apollo 11 cameras. That record gives space spending an economic justification beyond scientific discovery.

The Mars timeline exposes a competitive gap

NASA is planning Mars flights in the 2030s, with 2035 technically attractive because the Earth–Mars distance will be at its shortest. SpaceX, by contrast, says it wants uncrewed and crewed Mars flights during the 2020s. Zurbuchen sees commercial space as broadly positive, but the different timelines show how private players can set a faster operational pace than state agencies.

What Europe’s Space Sector Should Do Next

The actionable implications depend on which part of the space economy a reader sits in. The following moves follow directly from the facts and figures in the article.

• For European space startups: Zurbuchen’s leadership of ETH Zurich’s space programme is a concrete signal that European research infrastructure wants to become more entrepreneurial. Startups seeking technical talent, mission experience or academic partnerships now have a clear hub in Zurich.
• For European policymakers and budget planners: Closing the gap means more than announcing ambition. ESA’s 2021 budget of €6.49 billion compares with NASA’s $23.271 billion, while Zurbuchen expects global space spending to triple to roughly $900 billion. Budget decisions in the next few years will determine how much of that growth Europe captures.
• For climate-focused buyers of satellite data: Planet Labs’ daily imagery is already operational, having shown sea-level and weather changes and documented destruction in occupied Ukraine. That record makes Earth observation a usable climate and security tool today, not a future experiment.
• For companies in the space supply chain: The Mars timeline matters commercially. NASA targets the 2030s, with 2035 as an ideal orbital window, while SpaceX states it wants Mars flights in the 2020s. Suppliers should treat private-sector timetables as potentially faster than official agency schedules.