THE UNIVERSE
Sometimes I wonder!
Do any of these leaders of the world, Trump,Xi,Modi etc etc, ever stop to ponder the vastness of the universe and how insignificant the Human race is, how infinitesimally small they are in comparison to their Blown up egos
In the vastness of the Universe. the Earth. the Sun and planets are tiny dots. The Sun is a single star in a galaxy comprising 100.000 million stars. At least as many thousands of million of other galaxies. each with its own star system, extend as far as the largest and most sophisticated of optical and radio telescopes can reach. As the Universe expands. all galaxies clusters of galaxies move apart from each other at speeds that depend upon their distances. The furthest ordinary galaxy yet detected. Abell 1835 IR 1916 is 13.230 million light years away and is receding at 45 Percent of the speed of light. The most distant object in the Universe as on July 14.2004 is in background of Abell 2218. This corresponds to a distance greater than 2 billion light years. Beyond this, astronomers are looking back to a time when the Universe was born. and the Universe fades out.
Galaxies are dotted like islands throughout the Universe. A galaxy .is a huge congregation of stars which are held together by the force of gravity. They are so Sig that/sometimes they are called Island Universes. Most of the galaxies appear to be scattered m the space in a random manner. but then a.ec many galaxies which remain clustered into groups. the smallest are poor clusters Of only a few dozens galaxies. while the largest rich clusters may contain thousands of galaxies. Our galaxy. the Milky Way, is part of a poor cluster of about three dozen galaxies called 'the local group
The largest member of the Local Group is the Andromeda galaxy. and the Milky Way second largest galaxy in this group: most of other galaxies in our Local Group are small. The most distant objects in the Local Group are M31 , the Andromeda galaxy and M33, all of them being more than 2 million light years away from our galaxy.
Hubble thought that galaxies might evolve from elliptical into spiral form as they age; but astronomers today do not believe this to be true. Galaxies range in Size from small dwarf elliptical ones. with perhaps I million stars. to spiral galaxies containing 300 billion stars. to giant elliptical galaxies that may home to more than 10 trillion stars. The diameters of the galaxies range from light years in dwarf elliptical galaxies to over 50.000 light years in giant elliptical galaxies.
The nearest star is about times farther away than most distant planet in our solar system. A few ofthe other larger objects found beyond Pluto are Varuna (2000), Ixion (2001 Quaoar (2002), and Sedna (2003).
pearson's General Knowledge 2009
Sometimes I wonder!
Do any of these leaders of the world, Trump,Xi,Modi etc etc, ever stop to ponder the vastness of the universe and how insignificant the Human race is, how infinitesimally small they are in comparison to their Blown up egos
In the vastness of the Universe. the Earth. the Sun and planets are tiny dots. The Sun is a single star in a galaxy comprising 100.000 million stars. At least as many thousands of million of other galaxies. each with its own star system, extend as far as the largest and most sophisticated of optical and radio telescopes can reach. As the Universe expands. all galaxies clusters of galaxies move apart from each other at speeds that depend upon their distances. The furthest ordinary galaxy yet detected. Abell 1835 IR 1916 is 13.230 million light years away and is receding at 45 Percent of the speed of light. The most distant object in the Universe as on July 14.2004 is in background of Abell 2218. This corresponds to a distance greater than 2 billion light years. Beyond this, astronomers are looking back to a time when the Universe was born. and the Universe fades out.
Galaxies are dotted like islands throughout the Universe. A galaxy .is a huge congregation of stars which are held together by the force of gravity. They are so Sig that/sometimes they are called Island Universes. Most of the galaxies appear to be scattered m the space in a random manner. but then a.ec many galaxies which remain clustered into groups. the smallest are poor clusters Of only a few dozens galaxies. while the largest rich clusters may contain thousands of galaxies. Our galaxy. the Milky Way, is part of a poor cluster of about three dozen galaxies called 'the local group
The largest member of the Local Group is the Andromeda galaxy. and the Milky Way second largest galaxy in this group: most of other galaxies in our Local Group are small. The most distant objects in the Local Group are M31 , the Andromeda galaxy and M33, all of them being more than 2 million light years away from our galaxy.
Hubble thought that galaxies might evolve from elliptical into spiral form as they age; but astronomers today do not believe this to be true. Galaxies range in Size from small dwarf elliptical ones. with perhaps I million stars. to spiral galaxies containing 300 billion stars. to giant elliptical galaxies that may home to more than 10 trillion stars. The diameters of the galaxies range from light years in dwarf elliptical galaxies to over 50.000 light years in giant elliptical galaxies.
The nearest star is about times farther away than most distant planet in our solar system. A few ofthe other larger objects found beyond Pluto are Varuna (2000), Ixion (2001 Quaoar (2002), and Sedna (2003).
pearson's General Knowledge 2009
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