A planetary system made through disruption
Milestones of the Solar System treats the familiar arrangement of planets as the result of a turbulent history. The six-part series follows formative events involving stars, debris, collisions and planetary change. Its central idea is that destruction and creation are connected: the forces that wreck earlier worlds can also establish the conditions for new ones.
How It Begins examines the young Sun and the surrounding disk of debris. The Great Divide then contrasts rocky inner worlds with the gas-rich outer planets, exploring the consequences of a changing orbit for Jupiter. The Moon chapter turns to the collision associated with the formation of Earth's satellite.
Earth, Mars and the future of the Sun
A Tale of Two Worlds compares early Earth and Mars, asking why planets that began with similarities developed such different environments. The Era of Bombardment considers the impact scars visible across the Solar System and asks how that violent period relates to the emergence of oceans and the conditions for life. These are presented as scientific questions, rather than direct observations of an accessible past.
The final chapter, How it Ends, extends the timeline into the future of the Sun and its orbiting worlds. Autentic lists six 52-minute instalments, giving the series room to move from the birth of the system through its major transformations instead of concentrating on a single planet or mission.
