In the News

New Theory Suggests We’ve Been Wrong About Black Holes for 60 Years SciTechDaily 2 Dec, 2025

What if general relativity never actually tells us that black holes already exist, but only that their formation is inevitable in an infinite future we can never observe? In a new theory, Daryl Janzen, a physicist at the University of Saskatchewan in Saskatoon, Canada, questions whether we’ve mistaken mathematical inevitability for physical reality, and shows how much of our black hole story rests on that quiet leap.

Physicists and philosophers have long struggled to understand the nature of time: Here’s why The Conversation 19 Nov, 2025

Time feels obvious, yet almost impossible to articulate. That tension, from Heraclitus to modern physics, comes from a subtle mistake: we blur the boundary between existence and occurrence. Once that distinction is restored, familiar paradoxes evaporate and the nature of time becomes surprisingly straightforward.

Also published as:

• Pourquoi les physiciens et les philosophes ont-ils eu tant de mal à comprendre la nature du temps ? The Conversation
• Physicists and philosophers have long struggled to understand the nature of time: Here’s why Phys.org
• Physicists and philosophers have long struggled to understand the nature of time: Here’s why Space.com
• Pourquoi les physiciens et les philosophes ont-ils eu tant de mal à comprendre la nature du temps ? RTBF

Space-time doesn’t exist — but it’s a useful concept for understanding our reality The Conversation 24 Sep, 2025

Space-time is our most powerful tool for mapping where and when things happen — but that doesn’t make it something that exists. Modern physics, philosophy and science fiction often treat events as if they were places, turning a descriptive model into an ontology. Clarifying the difference between what exists and what merely occurs dissolves familiar paradoxes, reshapes debates about time and reveals why space-time itself is not part of reality, but a framework for describing it.

Also published as:

• L’espace-temps n’existe pas, mais c’est un cadre qui permet de comprendre notre réalité The Conversation
• Space-time doesn’t exist, but it’s a useful framework for understanding our reality Phys.org
• Space-Time Doesn’t Actually Exist RealClearScience
• Space-Time Does Not Exist – Here’s Why That Matters SciTechDaily
• The bold idea that spacetime doesn’t exist ScienceDaily
• L’espace-temps n’existe pas, mais c’est un cadre qui permet de comprendre notre réalité RTBF

What, exactly, is space-time? The Conversation 24 Aug, 2025

Space-time is often treated as the “fabric of reality,” but our language about it is riddled with hidden assumptions. What does it actually mean for space-time to exist? And how did a linguistic slip between what exists and what merely occurs shape a century of confusion about time, physics and reality itself?

Also published as:

• O que é exatamente o espaço-tempo? The Conversation
• Qu’est-ce que l’espace-temps, exactement ? The Conversation
• What, exactly, is space-time? Phys.org
• Space-time, the interwoven fabric of space and time EarthSky
• Does Space-Time Really Exist? SciTechDaily
• Is space-time structure, substance or metaphor? Mapping Ignorance
• Qu’est-ce que l’espace-temps, exactement ? RTBF