The Universe is commonly defined as the totality of existence, [ 1 ] [ 2 ] [ 3 ] [ 4 ] including planets , stars , galaxies , the contents of intergalactic space , and all matter and energy . [ 5 ] [ 6 ] The broadest definition of universe is that it is simply everything, while a narrower definition is that the universe is limited to what can be observed. [ dubious ] Similar terms include the cosmos , the world and nature .
Science Friday: Rockets, Planets, Stars & Bears…oh my by Kayla Iacovino , Filed under: Science/Technology , trackback Welcome back to Science Friday!
International Astronomical Union | IAU
Picked Universe Pearltrees
Science of the Universe
Space Simulations and Sky Charts
Quadrants of the Celestial Sphere (Constellations)
Supergalactic Coordinate System
General Planetary Features
Unified Fiel Theory
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Space, Outer Space Information, Universe Facts, News, Photos
tdarnell's Channel This channel is dedicated to Space Fans who love astronomy and want to learn concepts and hear about new discoveries in astronomy.
Through the Wormhole: Is There an Edge to the Universe? It is commonly theorized that the universe began with the Big Bang 13.7 billion years ago.
Missions Missions The National Aeronautics and Space Act of 1958 (Space Act) established NASA as an aerospace research and development agency that sponsors and conducts flight missions to obtain data in furtherance of its objectives. In NASA's Science Mission Directorate (SMD), flight missions range from suborbital projects—including balloons, sounding rockets, and airplanes—to interplanetary probes and flagship observatories.
Through the Wormhole: How Does the Universe Work? With the help of massive machines called particle accelerators, scientists studied the subatomic realm and made discoveries about the forces that operate at that level. But the search for a comprehensive explanation still continues. In particular, physicists have sought to find a way to reconcile Einstein’s model of space-time, which seems to work best when applied to big objects like stars and galaxies, and the theory of quantum mechanics, which offers an explanation of electromagnetic and nuclear forces that makes sense of reality at the tiniest level.
Exploring the Universe
Better Living Through Astronomy::DeepAstronomy.com
NASA Telescopes Help Discover Surprisingly Young Galaxy Telescopes Help Discover Surprisingly Young Galaxy
WISE Delivers Millions of Galaxies, Stars, Asteroids