EM2 in the Pub Part 11: space communications

How will we send selfies from Mars back to our friends on Earth? How will we call into those important work meetings? Dmitrios Tsifakis takes us through the practicalities of getting information back and forth across the solar system. Spoiler: it’s not that easy…

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EM2 in the Pub, part 5: oxygen is weird

Dr Phil is horrified that Earth is shrouded in a corrosive, dangerous chemical called oxygen. It’s unstable and it burns things. But if we lived in a stable unreactive gas atmosphere we wouldn’t be able to get energy to power our life.

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