Question

Nova theory of the origin of the earth was propounded by

Answer 1

Origin of Earth 4.6 billion years ago Sun and planets coalesced out of a vast cloud of gas and dust. Earth was hot glowing ball of white hot gases. Particles of gases were compressed together, giving off heat. Gases cooled down. Heavy material went to center of earth. Liquid material went to center. Otto Schmidt’s Inter-Stellar Dust Cloud Hypothesis Otto Schmidt: A Russian scientist. He proposed his ‘Inter- stellar –dust’ hypothesis in 1943. To explain the complex problem of the origin of the earth and the solar system. Image of Otto Schmidt's Inter-Stellar Dust Cloud Hypothesis Nova Hypothesis - Hoyle & Lyttleton Nova Hypothesis: The sun had another companion star which was much bigger than the sun, and the two together constituted a binary system. Hoyle and Lyttleton: The planets of the solar system have an originated from the expanding gases obtained from the explosion of a supernova. Binary Star Hypothesis – Russell Propounded in 1937. To remove the shortcomings of tidal hypothesis of sir James Jeans. Image of Binary Star Hypothesis - Russell Big Bang Theory Image of Big Bang Model STEADY STATE THEORY It is an alternative to the Big Bang model of the evolution of the universe. Image of Steady State Model Electromagnetic Theory - Hannas Alfven Hannas Alfven was a Swedish scientist. Considered one of the founding father of the field of space plasma physics. He Known for: Magnetohydrodynamics Plasma cosmology Alfvén wave Dust Gas Cloud Theory – Weizsacker This hypothesis explains well some of the observed phenomena relating to solar system.