Can Alternate Universes Exist? But if the universe began at a finite point, as nearly every physicist agrees that it did, an alternate version of you likely doesn’t exist, according to astrophysicist Ethan Siegel’s 2015 Medium article. How many alternate universes are there? One obvious question that arises, then, is exactly how many of these
Will Dark Energy Run Out? Dark energy, as we know it, is an extra form of energy in the Universe apart from matter, antimatter and radiation. … As time goes on and the Universe expands — if dark energy behaves in the simplest fashion that are consistent with observations — the energy density of dark
Why Is The Universe Created? During the Big Bang, all of the space, time, matter, and energy in the Universe was created. This giant explosion hurled matter in all directions and caused space itself to expand. As the Universe cooled, the material in it combined to form galaxies, stars, and planets. Why was universe formed?
Why Was There Probably No Life In The Galaxy 12 Billion Years Ago? There were no heavy elements. Why was there probably no life in the galaxy 12 billion years ago? Orbiting at a perfect balance. Why can’t we see a galaxy 15 billion light-years away? C. Because looking 15 billion light-years away means looking
Will Our Universe End? Astronomers once thought the universe could collapse in a Big Crunch How long until the universe ends? 22 billion years in the future is the earliest possible end of the Universe in the Big Rip scenario, assuming a model of dark energy with w = −1.5. False vacuum decay may occur
Why Does The CMB Appear So Uniform In All Directions? The CMB gives a snapshot of the universe when, according to standard cosmology, the temperature dropped enough to allow electrons and protons to form hydrogen atoms, thereby making the universe nearly transparent to radiation because light was no longer being scattered off free electrons. Why
Who Created The 12 Universal Laws? In tribute to his predecessors, Isaac Newton (1643–1727) once wrote: “If I have seen further it is by standing on the shoulders of giants.”1 In the first half of the 17th century, two giants stood out above the rest: Galileo Galilei (1564–1642) and Johannes Kepler (1571–1630). Where did the
What Did Copernicus Believe About The Sun? Nicolaus Copernicus was an astronomer who proposed a heliocentric system, that the planets orbit around the Sun; that Earth is a planet which, besides orbiting the Sun annually, also turns once daily on its own axis; and that very slow changes in the direction of this axis account
How Did The Universe Begin And How Will It End? The Big Bang theory says that the universe came into being from a single, unimaginably hot and dense point (aka, a singularity) more than 13 billion years ago. It didn’t occur in an already existing space. Rather, it initiated the expansion—and cooling—of space itself. How
Can Matter Be Created? Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass. Can matter be created from nothing? To manufacture