Theories About the Large and the Small

Name: Theories About the Large and the Small
Start: 2026-09-16T19:00:00+02:00
End: 2026-09-16T21:00:00+02:00
Location: Roskilde Kongrescenter

took place · 16 Sep 2026

Roskilde Kongrescenter, Roskilde

lecture culture

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Description was written before the event

An evening about the universe with Holger Bech Nielsen and Albert Sneppen at Roskilde Congress & Sports Centre.

About the venue: Roskilde Kongrescenter

Roskilde Congress & Sports Centre is the largest congress centre on Zealand outside Copenhagen. It opened in 1959 as Roskildehallen and has been expanded several times since - most recently in 2013, when Hall D was added, designed by the Danish architecture firm Christensen & Co. The 13,500 m² facility includes four halls, eight meeting rooms and a lecture and concert hall seating 919, hosting conferences, trade fairs, concerts, theatre and sports events. The largest hall holds up to 2,500 seated guests and serves as the home arena for Roskilde Håndbold.

Møllehusvej 15, 4000 Roskilde Get directions

About: Holger Bech Nielsen

One of the physicists who helped lay the groundwork for string theory, Holger Bech Nielsen has spent more than six decades at the Niels Bohr Institute - and is just as at home on a public stage as in a scientific journal. Expect a sharp, witty take on the universe's deepest puzzles.

2001

Humboldt Prize received (year)

1961

Affiliated with Niels Bohr Institute since (year)

Popular science books (including Theory of Everything, Theory of Nothing, Journey to the Smallest)

What's new

2026-02
Holger Bech Nielsen published a new research paper in February 2026 in high-energy physics via the INSPIRE database.
2025-10
In October 2025, Nielsen published the article "Ontological Fluctuating Lattice Cut Off" on arXiv.
2025-11
The lecture "Theories of the Large and the Small" with Holger Bech Nielsen and Albert Sneppen at Bremen Theatre in November 2025 was sold out.

Tour

KøbenhavnRoskildeOdenseHelsingørAarhus

Tracks

Teorien om ingentingPopular science book published by Gyldendal, October 2023, written with Jonas Kuld Rathje

Teorien om altPopular science book from 2019, predecessor to "The Theory of Nothing"

Teorier om stort og småtLecture tour 2025-2026 with Albert Sneppen and Jonas Kuld Rathje - several shows sold out

Strengteorien og universets hemmelighederPopular lecture on string theory and basic research, including held at the State Natural History Museum

About: Albert Sneppen

Astrophysicist Albert Sneppen is a PhD student at the Niels Bohr Institute who has published groundbreaking results on black holes and neutron star collisions in leading international journals since 2021. His public talks bring cutting-edge cosmological research to audiences with no prior background in physics.

peer-reviewed publications (ResearchGate)

2,377

citations of his research

80+

public lectures held since 2021

3,000+

sold copies of the book 'Black Holes' (2nd edition)

What's new

2026-03
Sneppen published a new article in Physical Review D in March 2026 about neutron star collisions and kilonova physics.
2025-09
Sneppen and Jonas Kuld Rathje toured Denmark with the lecture 'The Universe's Beautiful Secrets', including in Aarhus and Copenhagen.
2024-10
On 29 October 2024, the book 'Black Holes: The Hunt for the Universe's Beautiful Secrets' was published, written together with Jonas Kuld Rathje and published by People's Press.

Tour

AarhusKøbenhavn

Tracks

Sorte huller: Jagten på universets smukke hemmelighederPopular science book published October 2024 with Jonas Kuld Rathje, now in 2nd edition

Divergent reflections around the photon sphere of a black holeArticle in Scientific Reports (2021) on light deflection near black holes - attracted international attention

GW170817 kilonova-artikel i NatureFirst Nature article (2022) on the shape of cosmic explosions from colliding neutron stars

Universets smukke hemmelighederLecture tour in Denmark 2025 with Jonas Kuld Rathje

Theories About the Large and the Small

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