How the Solar System Formed
About 4.6 billion years ago a cold cloud of gas and dust collapsed, spun up into a flat disk and built the Sun and its planets. This film follows the idea from Kant and Laplace to ALMA's image of HL Tauri, shows how uranium–lead dating gives the oldest solids an age of 4,567 million years, explains the snow line, how dust became planetesimals, how Jupiter and Saturn grabbed their gas before it was cleared, how the giants may have migrated (the Grand Tack and Nice models), where the asteroid and Kuiper belts came from, the giant impact that most likely made the Moon, and what meteorites and the Ryugu and Bennu samples reveal.
Born from one cloud
How the Sun and its planets were built.
The cloud
An idea from the eighteenth century.
Disks and clocks
Seeing the process, and timing it.
Rock and ice
One line split the Solar System in two.
Building worlds
From specks of dust to planets.
Wandering giants
Planets may not have stayed put.
The Moon
Born from a collision, most likely.
Time capsules
Reading the history in leftover rock.
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