Is the universe infinite or just very big?

• Autores: MacGregor Campbell
• Localización: New scientist, ISSN 0262-4079, Nº. 3037, 2015, pág. 39
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Campbell talks about the universe. One way to think about the size of the observable universe is to consider how far light emitted at the big bang could have travelled by now. According to the best cosmological models, that distance is about 46 billion light-years. This is the cosmic horizon, a sort of three-dimensional equivalent of the 2D-horizon people see on Earth