
Reflections about life, challenges, changes and tales from my life
NoCertainties is my personal Blog. Here I write about personal growth, reflection, my experiences physically, metnally and emotional.
One important aspect for me is about accepting uncertainties – believing that there are no certainties and that‘ ok. I also enjoy philosophy and physics, so these topics also have a home here.
About me

Peter Niksa
Author and Physicist
I studied physics with a focus on theoretical cosmology. After that, I worked in life insurance and now I work in long-term safety research for a deep geological repository in Germany.
My hobbies used to revolve around cycling, video games, and movies — today, they’ve expanded into cycling, hiking, running, climbing, mountaineering, strength training, dragon-boat paddling, swimming, and now also writing.
Through some rather unusual hardships and challenges, I’ve developed what I hope is a rare but valuable perspective on life — one that might help others feel a little more hopeful about the difficulties life inevitably brings.
Uncertainty has always been one of my biggest struggles — as it is for many people. I hope that by sharing my experiences, you might find something that helps you navigate your own path a little more gently, and with a bit more trust in the unknown.
Entdecke Einsichten zu Leben, Unsicherheiten und mehr.
NoCertainties bietet tiefgründige Gedanken zu Herausforderungen, Abenteuern und philosophischen Fragen.
Persönliche Reflexionen
Tiefe Einblicke, die persönliche Erfahrungen mit philosophischen und physikalischen Perspektiven verbinden.
Abenteuer und Entdeckungen
Berichte über spannende Erlebnisse, die Perspektiven erweitern und zum Nachdenken anregen.
Philosophie und Physik
Gedanken zu komplexen Themen, die das Leben in all seinen Facetten hinterfragen.
