Why Is 95% Of The Universe Invisible?
How did our universe emerge from a single mathematical point of infinite density? In this episode of SpaceTime, astronaut and scientist Ulrich Walter joins top cosmologists to retrace 13.8 billion years of cosmic history. We investigate the "Dark Ages" of the universe, the violent birth of the first stars, and the mysterious "Dark Matter" that holds galaxies together despite defying the laws of Newtonian physics.
Courtesy of Spark on YouTube. Watch on YouTube ↗
More Space & Cosmos Documentaries
Life Beyond II: The Museum of Alien Life (4K)2020•38m•4K•★9.2
Life Beyond: Visions of Alien Life (4K)2024•1h 48m•4K•★9.1
Death of the Universe (4K)2019•29m•4K•★9
Shouting at Stars: A History of Interstellar Messages2022•32m•HD•★8.8
How Does Gravity Escape A Black Hole?2022•18m•HD•★7.7
How Quantum Entanglement Creates Entropy2021•20m•4K•★7.7
An Epic Journey to the Brightest Stars in the Sky 20262026•1h 33m•4K•★8.3
Black Star: Self-repatriation From Oakland to Ghana2018•37m•HD•★8.0
An Inside Look Into the Planets in Our Solar System2023•3h 14m•HD•★8.0
Saving Apollo 13: The Untold Story of NASA’s Greatest Rescue2025•47m•HD•★8.0
Next-Gen Solar Energy: Tapping Into the Sun’s Full Power | FD Engineering2024•52m•HD•★7.9
Mars Once Had Oceans2026•52m•HD•★7.7