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Hrvoje Tkalčić

Hrvoje Tkalčić

The Conversation

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In the outback, we’re listening for nuclear tests – and what we hear matters more than ever

05.02.2026 10

Pearls and Irritations

Hrvoje Tkalčić

In the Australian outback, we’re listening for nuclear tests – and what we hear matters more than ever

As the United States and Russia signal a return to nuclear testing, Australia’s remote monitoring station plays a crucial role in global verification.

04.02.2026 10

The Conversation

Hrvoje Tkalčić

Meteorites and marsquakes hint at an underground ocean of liquid water on the Red Planet

What happened to all the water on Mars? The answer may lie underground.

12.05.2025 10

The Conversation

Hrvoje Tkalčić

Why is one half of Mars so different to the other? ‘Marsquakes’ may have just revealed the answer

The ‘Martian dichotomy’ is one of the Solar System’s greatest mysteries – but new research in closing in on a solution.

17.01.2025 10

The Conversation

Hrvoje Tkalčić