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OUR UNIVERSE : AN EXPANDING MYSTERY Supratik Pal Indian Statistical Institute, Kolkata.

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Presentation on theme: "OUR UNIVERSE : AN EXPANDING MYSTERY Supratik Pal Indian Statistical Institute, Kolkata."— Presentation transcript:

1 OUR UNIVERSE : AN EXPANDING MYSTERY Supratik Pal Indian Statistical Institute, Kolkata

2 Meeeeeee…..

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7 Night SkyFrom New York

8 Beyond Naked Eye: Telescopes

9 Radio Telescope: Proud to be an Indian

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11 Eye in the Sky: Hubble Space Telescope

12 Supernova Anisotropy Probe Wilkinson Microwave Anisotropy Probe

13 Happy Birthday to our Universe: 13800000000 Years Ago

14 The First Sky

15 A Star is Born

16 Brighter than Stars : Nebulae

17 Our Galaxy Milky Way

18 Cloud made of Hydrogen in our Galaxy

19 Even what we can not see also exists

20 Our Galaxy is one among Millions

21 How far are They ? 4 Light Years = (300000 km/sec) X (4X365X24X60X60 sec) = 40000000000000 kilo-meters !!! Our Galaxy Nearest Galaxy

22 To See the Unseen: Lens in the Sky

23 To See the Unseen: Collision in the Sky

24 Death of a Star: Supernova Explosion

25 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 ?

26 Universe is expanding at accelerated rate

27 Huge Energy Still Unknown

28 Cosmic Microwave Background Radiation

29 The Cosmic Constituents: As of Now

30 Scientific Queries What?Why?How?

31 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…..

32 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

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