The Nauka Za Mlade website was created in collaboration with the EDUKOS Citizens’ Association, the First Kragujevac Grammar School and teacher Miloš Milosavljević, with the aim of popularizing and promoting science, technology and critical thinking.

NZM / How and why?

History of science

People, experiments and ideas that changed how we see the world.

History of science

Serial: A History of Astronomy

A serial about how our knowledge of the universe developed, from the earliest skywatching to modern astronomy.

Artist’s impression of a hypothetical Planet Nine, not a photograph.
Space

The search for Planet Nine

The full feature is currently published in Serbian. This page summarises its verified findings.

Aerial view of the two LIGO observatory arms at Hanford
Physics

Gravitational waves: from Einstein's equation to an observatory in space

When two black holes collide, the Earth does not shake like an earthquake. An almost imperceptible change in distance passes through it. Scientists have waited a century to measure that trace, and now they are building an instrument that will listen to the much slower "rhythm" of space.

A portrait of Emmy Noether as a young woman, showing her face and figure.
Physics

Why are symmetry and energy conservation connected?

Release a pendulum and its speed changes, yet energy does not disappear without a trace. Repeat the experiment tomorrow and we expect the same rules of motion. There is a deep connection between these observations: the fact that physical laws do not change when we shift an experiment in time is linked to the conservation of energy. In 1918, mathematician Emmy Noether showed how such connections can be proved. Her idea helps us understand familiar experiments while also making us more careful when we ask about the energy of the entire universe.

Portrait of Isaac Newton.
Physics

Newton and Leibniz: who invented calculus?

The famous quarrel turns on manuscripts, publication, notation and what it means to be “first” in science.

Seventeenth-century artistic depiction of Archimedes
Physics

Archimedes: buoyancy, levers and ideas ahead of their time

Behind the “Eureka” story stand rigorous geometry, problems of balance and questions that still matter in physics.

Photograph of Charles Darwin from 1868
Living world

Charles Darwin: how did evolutionary theory emerge?

From notebooks aboard the Beagle to natural selection: how the idea that transformed biology developed, and what it actually says.

Portrait of Michael Faraday
Physics

How did Faraday discover electromagnetic induction?

An 1831 experiment showed that a changing magnetic field can produce an electric current.