Web3 de jan. de 2024 · Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula – a spinning, swirling disk of material. Web8 de mar. de 2024 · One alternative theory is the Steady State universe. An early rival to the Big Bang theory, Steady State posits the continuous creation of matter throughout the universe to explain its apparent ...
How and When did the Universe Start? - Geography for Kids
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First there was hydrogen Nature Chemistry
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