![]() It feels at least a little more hopeful than Fermi's silence. Most of its terms remain blank – the fraction of planets with life, with intelligent life, with detectable technology – but the equation itself suggests we might one day arrive at an answer. We live in true reality, because our mirrors look pretty and glowy. To understand just how difficult it is to envision a world with a fourth spatial dimension, let's use a. Meanwhile, exoplanet discoveries over the past two decades have filled in a few of the terms in the much-debated Drake Equation – a chain of numbers that might one day tell us how many intelligent civilizations we can expect to find. This isn't the fourth dimension of time we're talking about, but another spacing dimension. In other words, everything we see is an illusion, and our world is actually a two-dimensional hologram rather than a 3D space, sort of like watching a 3D film, according to University of. The universe's eerie silence has its own name – the "Fermi paradox." Physicist Enrico Fermi famously posed the question: "Where is everybody?" Even at slow travel speeds, the universe's billions of years of existence allow plenty of time for intelligent, technological lifeforms to traverse the galaxy. This artist's concept allows us to imagine what it would be like to stand on the surface of the exoplanet TRAPPIST-1f, located in the TRAPPIST-1 system in the constellation Aquarius, as of Feb 2017. ![]()
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