"Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option"
About this Quote
Then he pivots to the seduction: "anything near the speed of light". That’s not a practical goal so much as a rhetorical pressure test. By framing the destination as relativistic travel, he exposes the inadequacy of incrementalism. Better engines won’t save you; you need a paradigm shift: "a new energy source and a new propellant". It’s the inventor’s credo, smuggled in as prediction.
The kicker is the flat, unadorned "Nuclear fission is not an option". Not because it’s impossible in principle, but because it’s politically, ethically, and operationally radioactive. Fission in space drags behind it a whole freight train of risk: launch failures scattering fuel, militarization anxieties, public fear, treaties, and the mismatch between "near light speed" ambitions and fission’s comparatively modest payoff.
Context matters: Greatbatch helped create the implantable pacemaker, a technology where reliability, safety margins, and unintended consequences are life-or-death. That sensibility comes through. He isn’t selling a fantasy. He’s setting boundaries so the future, if it arrives, has to earn its way there.
Quote Details
| Topic | Science |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Greatbatch, Wilson. (2026, January 16). Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option. FixQuotes. https://fixquotes.com/quotes/rocket-scientists-agree-that-we-have-about-87169/
Chicago Style
Greatbatch, Wilson. "Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option." FixQuotes. January 16, 2026. https://fixquotes.com/quotes/rocket-scientists-agree-that-we-have-about-87169/.
MLA Style (9th ed.)
"Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option." FixQuotes, 16 Jan. 2026, https://fixquotes.com/quotes/rocket-scientists-agree-that-we-have-about-87169/. Accessed 13 Feb. 2026.




