Depends. If you use a fission fragment rocket based on sustaining a chain reaction, yeah, the fragments are typically also radioactive. But you can do a fission fragment rocket based on radioactive ...

A nuclear fission fragment rocket engine (FFRE) that is exponentially more propellent efficient than rocket engines currently used to power today’s space vehicles and could eventually achieve very ...

Fission Fragment Rocket Engine Concept Puts Planets 100 Light Years Away Within Reach. Published: 21 Feb 2023, 11:43 UTC • By: Daniel Patrascu. 6 photos. Photo: NASA/Ryan Weed/Positron Dynamics.

What Is a Fission Fragment Rocket Engine? FFREs are not a new concept in themselves, but many have massive technical hurdles to overcome before they can be considered useful.

Physicists have solved a long-standing puzzle about mercury’s nuclear fission by using a five-dimensional model that ...

A five-dimensional model has successfully predicted the asymmetric fission of mercury isotopes, offering new insights into ...

A similar but more far-off idea is the fission fragment rocket. This type of vehicle would eject nuclear fission products from a reactor engine using magnetic fields. This could theoretically ...

While we’ve discussed them here at UT before, NASA’s Institute of Advanced Concepts has provided a grant to a company called Positron Dynamics for the development of a novel type of nuclear fission ...

NIAC: Positron Dynamics' Aerogel Fission Fragment Rocket Engine. Image of Aerogel for Aerogel Core Fission Fragment Rocket Engine NASA, Ryan Weed. Back in early January, NASA's IAC ...

A five-dimensional (5D) Langevin approach developed by an international team of researchers, including members from Science Tokyo, accurately reproduces complex fission fragment distributions and ...

A similar but more far-off idea is the fission fragment rocket. This type of vehicle would eject nuclear fission products ...