The Big Bang
How expansion and cooling transformed the early universe from a hot plasma into a transparent cosmos of atoms—and what its oldest light can tell us.
THE SERIES COMPANION
From Cosmos
to Civilization.
The sources behind the story.
Research, visual credits, and how each film is made.
24 films · Episodes and full chapters
CHAPTER 01
The universe
20 min
The First Stars
How the first stars formed from primordial gas, ended the cosmic dark ages, and began changing the universe around them.
Dark Matter
Rotation curves, gravitational lensing, galaxy clusters, and the cosmic web reveal the effects of dark matter, while its identity remains unknown.
How the Atoms Were Made
How stars and stellar explosions build the chemical elements, and why the heaviest nuclei require processes beyond ordinary fusion.
The Origin of the Universe
The complete first chapter brings together the early universe, the first stars, dark matter, and the stellar origins of the elements.
CHAPTER 02
A planet takes shape
How the Solar System Was Made
From a collapsing cloud to a young Sun and a disk of forming planets, with meteorites preserving the chronology of the Solar System’s birth.
How the Moon Was Made
What lunar samples and the Earth–Moon system reveal about the giant impact that most likely formed the Moon—and which details remain unsettled.
The Early Earth
How the early Earth cooled, developed a crust and oceans, and left fragments of its first 500 million years in ancient zircon crystals.
Plate Tectonics
How seafloor spreading, magnetic stripes, earthquakes, and subduction revealed a planet whose surface is continually rebuilt.
How Earth Was Made
The complete second chapter follows the formation of the Solar System, the Moon-forming impact, the early Earth, and plate tectonics.
CHAPTER 03
The origins of life
The Origin of Life
The early Earth’s chemical ingredients, energy gradients, membranes, and catalysts—and the settings in which nonliving chemistry could begin to acquire life’s capabilities.
RNA Before Cells
RNA copying, chemical cycles, metabolism, and dividing compartments illuminate possible routes toward the first cells, along with the gaps experiments have yet to close.
The Genetic Code
How cells translate genetic information into proteins, why RNA sits at the heart of the ribosome, and what today’s shared genetic code reveals about its origins.
The Ancestor of All Cells
What the shared machinery of living cells reveals about LUCA, the last universal common ancestral population, and the deep split between bacteria and archaea.
The Origin of Life
The complete third chapter follows the chemistry of the early Earth through RNA, the genetic code, and the common ancestry of cellular life.
CHAPTER 04
Life changes Earth
Earth’s First Ecosystems
How microbes built Earth’s first ecosystems by using chemical energy and sunlight, cycling nutrients, and changing the chemistry of rock, water, and air.
How Earth Got Oxygen
Why oxygen accumulated long after oxygen-producing photosynthesis began, and how the Great Oxidation Event transformed the atmosphere, oceans, climate, and life.
Where Mitochondria Came From
The ancient partnership between an archaeon and a bacterium that gave rise to mitochondria, explored through living relatives, genomes, and competing models of the merger.
Why Sex Persists
How meiosis reshuffles inheritance, what sexual reproduction costs, and the leading explanations for why sex persists across complex life.
How Plants Got Chloroplasts
How a cyanobacterium became a chloroplast, how photosynthetic partnerships spread through other cells, and how cells began forming multicellular bodies.
Snowball Earth
The evidence for the Cryogenian ice ages, the feedbacks that froze and thawed Earth, and the refuges where life may have endured.
Early Life: How Cells Changed Earth
The complete fourth chapter connects microbial ecosystems, oxygenation, mitochondria, sex, chloroplasts, multicellularity, and Snowball Earth.
CHAPTER 05
Animal worlds
The First Animals: Life in the Ediacaran
The Ediacaran seafloor, from the fronds of Mistaken Point to mobile grazers, early reefs, and burrows, records the emergence of large and increasingly active organisms.
The Cambrian Explosion
The Cambrian transformation of marine ecosystems: deeper burrows, skeletons, jointed legs, eyes, and predators, seen through Chengjiang and Burgess Shale fossils.
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BEHIND THE SERIES
Human editorial direction.
A custom production system.
Developed and directed by Anders Lunde, with AI-assisted research and production, text-to-speech narration, and custom scientific animation.
How the films are made →