AstroLab
The story of our atoms
From the first nuclei to stars and their ejecta: understand why the elements that make us have several origins.
3 min 25 s · Interactive subtitled film
Takeaway: The primordial Universe supplies the first nuclei; generations of stars then transform and recycle matter.
Useful background
None; nuclei, fusion and recycling are introduced.
Why does iron change a star’s fate?
The journey · 4 chapters
- Before and inside stars
- Why the core collapses
- Beyond iron
- Evidence and our inheritance
Why explore it?
French and English subtitles. Adjustable playback speed, free navigation and sequence reframing. AI-assisted editorial review.