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

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Presentation transcript:

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

Meeeeeee…..

Night SkyFrom 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: 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 ? 4 Light Years = ( km/sec) X (4X365X24X60X60 sec) = kilo-meters !!! Our Galaxy Nearest Galaxy

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 = Years Size of our Universe = Light Years = 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