96% OF THE UNIVERSE IS MISSING

And even if the great multidimensional, string-theory main switch is shut off, it still seems we only know about 4% of the known universe.

“Astronomers and physicists are now grappling with evidence that suggests, even with the most powerful telescopes, we can only observe four percent of the universe. The rest, they posit, is dark matter and dark energy: " 'Dark,' cosmologists call it, in what could go down in history as the ultimate semantic surrender. This is not 'dark' as in distant or invisible. This is not "dark" as in black holes or deep space. This is 'dark' as in unknown for now, and possibly forever: 23 percent something mysterious that they call dark matter, 73 percent some­thing even more mysterious that they call dark energy. Which leaves only 4 percent the stuff of us. As one theorist likes to say at public lectures, 'We're just a bit of pollution.' Get rid of us and of every­thing else we've ever thought of as the universe, and very little would change. 'We're completely irrelevant,' he adds, cheerfully.
"The 'ultimate Copernican revolu­tion,' as [astronomers] often call it, is taking place right now. It's happening in underground mines, where ultrasensitive detectors wait for the ping of a hypothetical particle that might already have arrived or might never come, and it's happening in ivory towers, where coffee-break conversations conjure multiverses out of espresso steam. It's happen­ing at the South Pole, where telescopes monitor the relic radiation from the Big Bang; in Stockholm, where Nobelists have already be­gun to receive recognition for their encounters with the dark side; on the laptops of postdocs around the world, as they observe the real­time self-annihilations of stars, billions of light-years distant, from the comfort of a living room couch. It's happening in healthy collabora­tions and, the universe being the intrinsically Darwinian place it is, in career-threatening competitions.
"The astronomers who have found themselves leading this revolu­tion didn't set out to do so. Like Galileo, they had no reason to expect that they would discover new phenomena. They weren't looking for dark matter. They weren't looking for dark energy. And when they found the evidence for dark matter and dark energy, they didn't be­lieve it. But as more and better evidence accumulated, they and their peers reached a consensus that the universe we thought we knew, for as long as civilization had been looking at the night sky, is only a shadow of what's out there.” – Richard Panek: The 4 Percent Universe: Dark Matter, Dark Energy and the Race to Discover the Rest of Reality ( Houghton Mifflin Harcourt)

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