According to Big - Bang theory : The universe probably originated about 15 billion years ago , very dense, hot globule of gas by expanding rapidly outward . That time , universe contained maximum part of Hydrogen and and some part of helium . and may be first star will be formed by hydrogen about 100 million years ago. then , slowly - slowly entire Galaxy , planets , satellite , asteroid , nebula will be formed .
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Answer:
According to Big - Bang theory : The universe probably originated about 15 billion years ago , very dense, hot globule of gas by expanding rapidly outward . That time , universe contained maximum part of Hydrogen and and some part of helium . and may be first star will be formed by hydrogen about 100 million years ago. then , slowly - slowly entire Galaxy , planets , satellite , asteroid , nebula will be formed .
Answer:
Creation theory, Cosmic Egg theory, Atomic universe theory, Stoic theory, Infinite Universe Theory, Static Universe theory, Big Bang Theory, Oscillating Universe Theory, Steady State Theory, Chaotic Inflation Theory