MY COMPLETE RESIDENTIAL ADDRESS • BD-950, • Sarojini Nagar (Opposite Vinayak Mandir) • New Delhi (Bordered by Haryana and Uttar Pradesh) • India • (Bordered by Pakistan,Afghanistan,China,Nepal,Bhutan,Bangladesh, Myanmar,Arabian Sea,Bay of Bengal and Indian Ocean) • Asia • Planet Earth • (The third planet from the sun with radius 6,400km, mass 6 trillion trillion kg,at a distance of 15 Crore km from the Sun.) • Solar System • (Consists of the Sun at the centre,along with eight planets: Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune, dwarf planets like Pluto,their moons,asteroid belt,Kuiper Belt,and Oort cloud.The Sun is a 4.6 billion year old yellow main sequence star of spectral classification G2V,radius 7 lac km,mass 2 million trillion trillion kg,surface temperature 5,780C and core temperature 1 Crore Celsius.The distance to end of Solar System is 9.46 Trillion km or 1 light year.) • (Opposite Alpha Centauri at a distance of 4.2 light years) • Local Bubble • (includes nearby stars like Alpha centauri,Beta centauri and Sirius) • Local Interstellar Cloud • (includes other stars like Vega,Altair,Aldebaran etc) • Gould Belt • Orion Arm • Milky Way Galaxy • (It is ia barred spiral galaxy of diameter 1,00,000 light years and thickness 2,000 light years.The solar system is located in the orion arm at a distance of 30,000 light years from the Galactic centre.It contains more than 20,000 crore stars.The central supermassive black hole of Milky Way,around which all the stars of the galaxy orbit,has a mass of 40,00,000 Suns.The solar system orbits the galactic centre once every 25 crore years.) • (The Milky way’s satellite galaxies include the Large Magellanic cloud at a distance of 1,68,000 light years,the Small Magellanic Cloud,Sagittarius dwarf galaxy etc.) • (Opposite Andromeda Galaxy at a distance of 25 lakh light years) • The Local Group of Galaxies • (a group of 30 galaxies including our Milky Way Galaxy,Andromeda Galaxy,Triangulum Galaxy etc.Has a diameter of 1 Crore light years.) • The Virgo Supercluster • (contains more than 100 galaxy groups and clusters including our Local Group.Has a diameter of 11 crore light years) • Pisces-Cetus Supercluster Complex • (A galaxy filament which contains 60 galaxy superclusters including our Virgo Supercluster.It is 100 crore light years long and 15 crore light years wide) • Observable Universe • (The part of the universe which we can observe today from Earth.The objects outside the observable universe are not observable today because the light emitted by these objects has not had enough time to reach us during the 13.7 billion year age of the universe.The Observable Universe has a radius of 46.6 billion light years and includes more than 300 billion galaxies,each containing more than 100 billion stars.The number of stars in the observable universe is thousands of times greater than the total number of sand grains on all the beaches of Earth) • Universe • (It was created 13.7 billion years ago in an event called the BIG BANG.It consists of 3% baryonic matter(i.e. the matter in all stars,galaxies and planets wee can see),27% Dark Matter and 70% Dark Energy.All that we know about the universe is about only 3% of it. Dark Matter and Dark Energy are still completely unknown.The Space-Time consists of 4 Dimensions-3 Space and one Time.6 or 7 extra dimensions could be curled up in a region smaller than the nucleus of an atom.) • (The radius of the universe is 1 billion trillion trillion light years). • Multiverse • (contains a very large number(possibly infinite) of universes) By: SANDEEP.M SRI VENKATESHWARA COLLEGE NEW DELHI
Posted on: Wed, 17 Jul 2013 01:48:39 +0000
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