Slide 1Does The Universe Have A Metal Floor? Matthew Pieri The Ohio State University, 1st November, 2007 Collaborators: Hugo Martel, Joop Schaye, Anthony Aguirre, Martin…

Stars Stars, Galaxies, and the Universe Ch 30 SOL 13 Objective ES 1 and 2 What is a Star? A ball of energy that gives off a massive amount of electromagnetic energy Stars…

El universo: Edad: 13.7 millardos de años (1 % de error) Expansión: 71 km/sec/Mpc actualmente (5 % de error) 73% = Energía oscura 23% = materia oscura fría 4% = átomos…

Our Place in the Cosmos Lecture 12 Stellar Evolution Stellar Evolution We saw in the last lecture that all main sequence stars generate their energy by fusing hydrogen into…

Stars & Galaxies Electromagnetic Spectrum The Universe The Big Bang forms the universeâ¦.. The energy creates stars. Gravity pulls stars together into Galaxies. The…