The Universe, Dark Energy and Us
Almost every scientific talk or seminar in astronomy today starts from the idea that we live in a universe in which a mysterious force known as dark energy makes up about 70 percent of the total cosmic amount of everything. A mysterious substance known as dark matter makes up about 25 percent. And ordinary matter — the stuff of the periodic table, including interesting assemblies of matter like galaxies, stars, planets and people — is a paltry 5 percent.
If this is right, the things we observe in the universe are not the important things. Think of it this way: when you look at a snow-covered mountain, what you see is the snow, but the snow is not the mountain.… Seguir leyendo »