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Download 13800000000 Years Ago The First Sky
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OUR UNIVERSE : AN EXPANDING MYSTERY Supratik Pal Indian Statistical Institute, Kolkata Meeeeeee….. Night Sky From New York Beyond Naked Eye: Telescopes Radio Telescope: Proud to be an Indian Eye in the Sky: Hubble Space Telescope Supernova Anisotropy Probe Wilkinson Microwave Anisotropy Probe Happy Birthday to our Universe: 13800000000 Years Ago The First Sky A Star is Born Brighter than Stars : Nebulae Our Galaxy Milky Way Cloud made of Hydrogen in our Galaxy Even what we can not see also exists Our Galaxy is one among Millions How far are They ? Our Galaxy Nearest Galaxy 4 Light Years = (300000 km/sec) X (4X365X24X60X60 sec) = 40000000000000 kilo-meters !!! To See the Unseen: Lens in the Sky To See the Unseen: Collision in the Sky Death of a Star: Supernova Explosion What do they tell us ? Age of the Universe = 13800000000 Years Size of our Universe = 13800000000 Light Years = 100000000000000000000000 kilo-meters !!! Why are they so important ? Universe is expanding at accelerated rate Huge Energy Still Unknown Cosmic Microwave Background Radiation The Cosmic Constituents: As of Now Scientific Queries What? Why? How? And miles to go Dark energy or cosmological constant? What is dark energy? Why is cosmological constant so small? What is dark matter? Who governs fast expansion at the beginning? How were stars, galaxies etc formed? Gravitational waves: yes or no? How to match precise observational data? How to discriminate a model from others? Many more….. Want to make it a career? Basic level ….. Mathematical Methods Classical Mechanics Quantum Mechanics Electrodynamics Advanced level ….. General Relativity Quantum Field Theory Particle Physics Computer Programming