Deadlines

Terms Used

June 10, 2025 - Contest Announced

June 23, 2025 - Open to Submissions

October 29, 2025 (10 AM US Eastern Time) - Extended Deadline for Submissions

December 1, 2025 (10 AM US Eastern Time) - Essay Rating Deadline

December 2 – January 9, 2026 - Expert Judges' Evaluation Period

By January 23, 2026 - Prize Winners Announced; All Entrant/Commentator Names Revealed

Everyone who submits an entry to the Competition through the submission form will be regarded as a Competition Entrant; however only those whose essays are deemed eligible and posted to the site will be regarded as "Essay Authors." Each eligible essay will be read and rated (scored between 1 and 10) by at least two Expert Readers (chosen by FQxI). FQxI Members and other Essay Authors will also have the ability to score essays. Essay Author Finalists will be those achieving the highest scores and/or those recommended by the Expert Readers. Essays can also be "liked" and commented on by the public.

For further clarity, see below for definitions of types of Competition participant:

  • Competition Entrant: Anyone who enters the Competition by submitting an entry through the submission form.

  • Essay Author: All Competition Entrants who receive a confirmation of eligibility from FQxI. Essay Authors have essays posted in the Competition. All Essay Authors will be anonymous, with names and bios withheld until the winners are announced.

  • FQxI Members: Scientists and outreach specialists FQxI has invited to be Members. A current list of FQxI Members is available here.

  • Expert Reader: Two or more people, selected by FQxI, to read and rate eligible essays. This review will happen during the general voting period to ensure all essays are read. Expert Readers provide FQxI with more than one fair assessment of each essay in case of any rating fraud.

  • Competition Evaluator: This includes Essay Authors, FQxI Members, and Expert Readers. These three groups can rate essays on a scale of 1 to 10 during the general voting period ending December 1, 2025, at 10 AM US Eastern Time.

  • Public Reader: Anyone who is not a Competition Evaluator. Public Readers can comment on (when logged in) and rate essays by clicking the thumb icon to "Like" an essay.

  • Essay Author Finalist: This includes Essay Authors with the top Competition Evaluator scores, and Expert Readers' recommendations. These groups are only eligible to be Essay Author Finalists if they have, at a minimum, rated the three essays assigned upon confirmation of eligibility.

  • Expert Judge: This panel evaluates Essay Author Finalists between December 2 and January 9, 2026, after the general voting period ends. They will meet after this period to review and select the Prize Winners based on the Evaluation Criteria shared on the Competition Rules page.


FQxI Competition: What's Ultimately Possible in Physics?

First Prize
Stardrives and Spinoza
by Louis Crane
Competition Theme
What's Ultimately Possible in Physics?
Second Prize
On the impossibility of superluminal travel: the warp drive lesson
by Stefano Finazzi
Competition Theme
What's Ultimately Possible in Physics?
Second Prize
At the Frontier of Knowledge
by Sabine Hossenfelder
Competition Theme
What's Ultimately Possible in Physics?
Third Prize
The fairness principle and the ultimate theory of not everything
by Giovanni Amelino-Camelia
Competition Theme
What's Ultimately Possible in Physics?
Third Prize
The limits of cosmology
by Amedeo Balbi
Competition Theme
What's Ultimately Possible in Physics?
Third Prize
Unification and Emergence in Physics: the Problem of Articulation
by Ian Durham
Competition Theme
What's Ultimately Possible in Physics?
Third Prize
Might black holes reveal their inner secrets?
by Ted Jacobson
Competition Theme
What's Ultimately Possible in Physics?
Third Prize
On the (im)possibility of quantum computing
by Gheorghe Sorin Paraoanu
Competition Theme
What's Ultimately Possible in Physics?
Third Prize
On Explaining Existence
by Dean Rickles
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Unification of Nuclear Structure Theory Is Possible
by Norman D. Cook
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Mountains on the Moon: The Multiverse and the Limits of Physics
by Richard Easther
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Spacetime and Matter - a duality of partial orders
by Hans-Thomas Elze
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
UNIFICATION AND THE LIMITS OF KNOWLEDGE
by Marcelo Gleiser
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
What is possible in physics depends on the chosen representational formalism
by Lev Goldfarb
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Heuristic rule for constructing physics axiomatization
by Florin Moldoveanu
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Mission Impossible
by Maulik Parikh
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Lessons from failures to achieve what was possible in the twentieth century physics
by Vesselin Petkov
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
Quantum theory, gravity, and the standard model of particle physics : using the hints of today to build the final theory of tomorrow
by Tejinder Singh
Competition Theme
What's Ultimately Possible in Physics?
Fourth Prize
A Computational Anthropic Principle: Where is the Hardest Problem in the Multiverse?
by Navin Sivanandam
Competition Theme
What's Ultimately Possible in Physics?