Out of this world: A recap of the stellar talks in Session 4 of TED2015

TED Blog

Joshua Roman performs at TED2015 - Truth and Dare, Session 4. Photo: Bret Hartman/TED Joshua Roman plays Bach to accompany footage from the International Space Station. Photo: Bret Hartman/TED

“When our ancestors looked up at the night sky, they saw tools for navigation. They saw myths, and they saw the heavens,” says June Cohen, the host of Session 4 of TED2015. “But technology has given us so many new clues. … Space exploration has never been as fascinating and relevant as it is today.”

Here’s a recap of the talks in this session:

Bach in the dark. The music of cellist Joshua Roman fills the darkened theater at the start of the session. The TED Senior Fellow plays the prelude to Bach’s cello suite No. 1 in G Major, and as the tempo picks up we see a gorgeous blue orb against the screen behind Roman. It’s Earth. Time-lapse footage from the International Space Station shows our planet’s bright lights shining against its dark blue…

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