Physical cosmology has achieved consensus on the Standard Model (SM). Universe evolved from high temperature state through expansion and cooling. SM extends gravity theory to describe universe's overall structure. FLRW models provide simplest solution within decade of Einstein's discovery
Universe started as infinitely hot and dense singularity 13.7 billion years ago. Explosive expansion occurred in first second, faster than light speed. Universe contained fundamental particles like neutrons, electrons and protons. First visible light appeared 380,000 years after Big Bang
Universe began as hot, dense point 13.7 billion years ago. Big Bang wasn't explosion, but space appeared everywhere. WMAP mission in 2001 confirmed universe's age. Universe expanded 90 times during inflation period
Cosmology studies universe's origin and fate, closely related to astronomy. Ancient Greeks developed geocentric model, refined by Ptolemy. Copernicus proposed heliocentric model in 1543, challenging Church's center. Newton developed gravity theory, explaining planetary motion
Created by Kevin Grevioux and Mat Brome in 2008. Adam Brashear was a Cornell University graduate and Marine Corps veteran. Became superhero Blue Marvel after surviving reactor explosion. Received Presidential Medal of Freedom in 1962
Matter is any substance with mass and volume, including atoms and particles. Matter exists in various states like solid, liquid, gas, and plasma. Matter is not the same as mass, which is a property of matter. Matter has both wave-like and particle-like properties