Over billions of years, planet Earth has become home to an amazing interdependent ecosystem, containing a dizzying variety of animals and plants. But how did life here begin? And does it exist anywhere outside of our solar system? We uncover the secrets of our world by tracking the evolution of the cosmos itself, from the Big Bang onwards. Follow scientists responsible for some of the major breakthroughs in understanding the origins of life and witness how their discoveries are fundamentally changing the way we perceive the universe.
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Now that we’re done with the planets, asteroid belt, and comets, we’re heading to the outskirts of the solar system. Out past Neptune are vast reservoirs of icy bodies that can become comets if they get poked into the inner solar system. The Kuiper Belt is a donut shape aligned with the plane of the solar system; the scattered disk is more eccentric and is the source of short period comets; and the Oort Cloud which surrounds the solar system out to great distances is the source of long-period comets. These bodies all probably formed closer into the Sun, and got flung out to the solar system’s suburbs by gravitational interactions with the outer planets.
22 • Crash Course Astronomy • 2015 • Astronomy
History in the making; the inside story of the Artemis II mission around the moon and back. Four astronauts - Reid Wiseman, Victor Glover, Christina Koch and Jeremy Hansen - have just completed a ten-day mission going deeper into space than anyone has gone before. They are the first humans to circumnavigate the moon since 1972.
2026 • Astronomy
A scientist figures out how to go to the moon while fighting for his life in a war trench.
8/13 • Cosmos: Possible Worlds • 2020 • Astronomy
Professor Brian Cox explores the solar system’s wildest weather, encountering powerful lightning, strange metallic frosts and monsoon rains on a moon a billion kilometres from Earth.
S1E3 • Solar System • 2024 • Astronomy
Neutrinos are the most mysterious particles in the universe, and they power some of the most explosive events in the cosmos; new discoveries reveal how these ghosts pass through objects undetected and why they could be the reason we exist.
S9E8 • How the Universe Works • 2021 • Astronomy
In unpredictable freshwater environments, parents must time births and adapt to shifting elements to keep their young alive.
S1E4 • Parenthood • 2025 • Astronomy