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.
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NASA launches its most ambitious hunt for traces of life on Mars, landing a car-sized rover in a rocky, ancient river delta. The rover will stow samples for possible return to Earth and test technology that may pave the way for human travel to Mars.
Brian Cox discusses the elements of which all living things, including humans, are made. He explores the beginnings of the universe and the origins of humanity, going far back in time to look at the process of stellar evolution.
S1E2 • Wonders of the Universe • Astronomy
The only reason life on Earth is possible is because of our stable orbit around the Sun. Elsewhere in the Universe, orbits are chaotic, violent and destructive. On the largest scale, orbits are a creative force and construct the fabric of the Universe.
S4E4 • How the Universe Works • 2015 • Astronomy
Is there another Earth out there with liquid oceans, rocky continents and life like us? Astronomers seek the answer with spectroscopy, direct imaging and telescopes. They hope to find evidence of atmospheres, magnetospheres and signs of life.
S3E9 • How the Universe Works • 2014 • Astronomy
Astronaut Mike Massimino leads a journey to Jupiter where he investigates the planet's deepest mysteries and tries to discover if its origins make it the sun's secret twin.
S1E1 • The Planets (US) • 2017 • Astronomy
Saturn's secrets are out. The ferocious weather, the evolving ring system and the discovery of active geology on Saturn's moons has rewritten the textbooks. Scientists are looking for life on Saturn's moons and they may have found it on Titan.
S3E5 • How the Universe Works • 2014 • Astronomy