Field
The laws governing matter, energy, space, and time. From classical mechanics and thermodynamics to quantum field theory, general relativity, and cosmology. Physics provides the foundational framework from which all other natural sciences are built.
Fusion's greatest achievement is not the plasma temperature or the confinement geometry. It is seventy years of open, international collaboration across the Cold War divide — and what that model reveals about how civilisation-scale problems actually get solved.
The sun has been running a fusion experiment for four billion years on the same fuel. Søren Bang Korsholm explains the physics, the engineering challenge of confinement, why fusion cannot run away like fission, and what the history of international collaboration reveals about how large problems actually get solved.
The most powerful advances in astronomy come from smarter signal extraction, not bigger hardware. A spectrograph on a modest telescope can reveal more about a distant star than a raw image from a larger one, because what you extract from the light matters more than how much of it you gather.
The classroom solar system poster implies a closed system ending at Neptune. That implication shapes how people understand science, exploration, and discovery. It is worth correcting.
Modern telescopes do not just magnify. They extract meaningful signal from noise. Mads Fredslund Andersen explains how spectrographs, adaptive optics, and indirect detection have transformed what we can know about the universe.
The classroom poster shows eight planets and a clean edge at Neptune. The solar system extends halfway to the nearest star. Mads Fredslund Andersen explains what is actually out there, how it formed, and why the boundary question matters for exploration.
In 2019, we photographed one black hole. We know millions more exist in the Milky Way alone. That gap is not a problem of knowledge — it is a gap in detection technology, and indirect evidence is not a lesser form of evidence.
Black holes are among the best-supported objects in physics — and among the strangest. Ole Eggers Bjælde explains what they actually are, how time behaves near one, and what the next generation of research will require to resolve what remains unknown.
The 'root cause' argument against geoengineering research is not scientific caution. It is a form of moral symbolism that mistakes the starting point for the conclusion. Blocking half a percent of sunlight is technically achievable, cost-competitive, and deserves serious parallel investigation.
The Sun's relationship with Earth's climate is one of the most layered problems in planetary science. Christoffer Karoff walks through orbital mechanics, sunspot cycles, measurement difficulties, and the geoengineering options now receiving serious government funding.
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