At the beginning of the universe, scientist believed it contained only what two elements?

Also where we're all of the other elements formed?

6 Answers

  • 8 years ago
    Favorite Answer

    No, that's not true.

    At the start of the universe, there was only energy.

    As the energy cooled, it condensed into matter according to E = mc^2. This is called nucleosynthesis and produced hydrogen, helium and lithium.

    All other elements are produced by stars, either by nuclear fusion in their cores (elements up to lead) or by supernovae (higher elements).

  • Morgy
    Lv 4
    8 years ago

    It was largely hydrogen and helium, though with traces of lithium and beryllium.

    The remaining elements (up to Uranium) were created in the process of nuclear fusion and supernovae. Beyond Uranium, the elements are created in particle accelerators.

  • Anonymous
    8 years ago

    Scientists don't believe there were ANY elements AT ALL until the Universe cooled down enough for Energy to convert to mass. The first elements to form were hydrogen, helium and small amounts of lithium and beryllium, the first four elements on the periodic table of elements. There were NO ELEMENTS AT ALL until AFTER the Plank epoc,

  • Paula
    Lv 7
    8 years ago

    Hydrogen and helium (with traces of elements with atomic numbers 3 & 4.

    And that means that all the original stars (13 billion years old) can only have planets that are composed entirely of hydrogen and helium.

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  • Anonymous
    8 years ago

    The universe came from nothing.

  • 8 years ago

    my poem type c

    hope it helps

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