Ghost busters

• Autores: Stuart Clark
• Localización: New scientist, ISSN 0262-4079, Nº. 2975, 2014, págs. 32-35
• Idioma: inglés
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• Resumen

  • Cosmologists argue that the standard model of the universe is based on an oversimplification of Einstein's general relativity--the theory that underpins all of cosmology--and contains an unwarranted assumption about how stuff is distributed in the universe. Arguments today about the nature of the cosmos begin and end with Einstein. His equations of general relativity describe how matter curves space and time around it, causing the local accelerations people interpret as the force of gravity and, on the grandest scale, guiding the universe's evolution. Over the past century, cosmologists have plugged their improving observations into Einstein's equations and, little by little, refined the standard model. Here, Clark looks at a few simplifying assumptions to make Einstein's fiendishly complex equations tractable and arrive at such conclusions.