The Andromeda - Milky Way Collision • 2018 • PBS Space Time

11:13

Today we’re talking about our galactic neighborhood: The Milky Way. It’s a disk galaxy, a collection of dust, gas, and hundreds of billions of stars, with the Sun located about halfway out from the center. The disk has grand spiral patterns in it, formed by the traffic jams of stars and nebulae, where stars are born. The central region is shaped like a bar, and is mostly old, red stars. There’s also a halo surrounding us of old stars.

37 • Crash Course Astronomy • 2015 • Astronomy

49:58

This is the story of the James Webb Space Telescope, told by the people who have devoted their lives to it. It is the world’s largest, most advanced, and most expensive telescope, and building it has been fraught with challenges. But it will all be worth it if the December 2021 launch is successful.

Secrets of the Universe (Curiosity) • 2022 • Astronomy

80:03

"This film documents an event that has never taken place – man's first encounter with intelligent life from space". We've been fantasizing about an extraterrestrial visit for decades, but what would happen if it actually took place? How would we cope? Should we be afraid? These and many other questions are addressed in this philosophical film about a hypothetical initial contact with aliens. Scientists and space affairs specialists at the UN and NASA and in the British government cooperate in this cinematic simulation of the undoubtedly exciting meeting between extraterrestrial life and humanity. The interviewees speak directly to the unknown entities as if they've already arrived. From their own fields – politics, theology, sociology, biology or space science – they ask probing questions. What are you doing here? Do you have a sense of right and wrong? Do you carry bacteria that could make us sick? Are we hazardous to your immune system? Information specialists in the British government show how a first summit in this situation could go. How do you inform the public? Will countries work together? Is there a danger involved? Above all, the alien visit raises questions about the relation between our own history of exploration, colonization and warfare, and the expectations with which we approach the unknown. This is a journey beyond terrestrial perspective, revealing the fears, hopes, and rituals of a species forced not only to confront alien life forms, but also its own self image.

2015 • Astronomy

83:44

Nasa intends to send astronauts to Mars. To succeed, crew members will have to overcome unprecedented, life-threatening challenges, and while many of these hazards are physical, the most elusive are psychological. Throughout the expected three-year absence, crew members won't be able to communicate with Earth in real time due to the immense distance. The psychological impact of this level of disconnectedness and isolation - both from mission control and loved ones - is impossible to predict and endangers the mission itself. Directed to mitigate this threat is Dr Al Holland, a Nasa psychologist whose job is to keep astronauts mentally stable in space. The Longest Goodbye follows Holland, rookie astronauts Kayla Barron and Matthias Maurer and former astronaut Cady Coleman, among others, as they grapple with the tension between their dream of reaching new frontiers and the basic human need to stay connected to home.

2023 • Astronomy

28:06

Professor Brian Cox probes our moment of creation. How did our Universe come into existence? Was there a time before the Big Bang? Do our laws of physics inexorably lead to the existence of us?

S1E1 • Brian Cox: Life Of A Universe • 2017 • Astronomy

42:29

Dark matter and dark energy are locked in an epic battle for control of the cosmos, and the winner will determine the fate of the universe. New discoveries might reveal which force will emerge victorious.

S7E7 • How the Universe Works • 2019 • Astronomy