Is There an Ether?

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There was never an experiment to show it was there. O so i want to make that distinction. It's a very important one that isn't always embraced when people have this conversation, right? We were measuring stellar spectra before we had a clue what spectra meant,. But we knew it was something there to take pictures of and to measure the size of the spectral features. And and we had good data, even though we didn't know what it was we were documenting. The difference is we we, we presumed there was an ether. There was never an experiments to show it wasthere. An experiment was timately conceived to demonstrate we don't need aneither dark matter dark energy or

In this thought-provoking conversation on life, the universe, and everything, Neil deGrasse Tyson tackles the world’s most important philosophical questions about the universe with wit, wisdom, and cutting-edge science. For science geeks, space and physics nerds, and all who want to understand their place in the universe, this enlightening new book offers a unique take on the mysteries and curiosities of the cosmos, building on rich material from his beloved StarTalk podcast, along with dozens of his most popular tweets on science. Shermer and Tyson discuss: the universe, multiverse, big bang, big rip, dark matter, dark energy, gravity, gravitational waves, origins of morality, hard problem of consciousness, consensus science, the unknown, Fermi’s paradox, extraterrestrials, and artificial intelligence.