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  1. Hydrogen, in the form of protons and free electrons, formed from ... not yet assembled into protons, because it was too hot.) Hydrogen atoms formed 300,000 years later when things...

    10 Answers · Science & Mathematics · 03/02/2019

  2. Others are mostly right. Dark matter might be even more. Neutrinos, photons, Higgs bosons, electrons, cosmic ray particles, methane, water, oxygen, nitrogen, a few other elements are numerous, but less than the...

    10 Answers · Science & Mathematics · 29/09/2019

  3. The fusion reaction between four H atoms makes a neutron. see below.

    4 Answers · Science & Mathematics · 07/05/2019

  4. CO₂, we would be dead He, we would be ok, but plant life would eventually die, as they need nitrogen. Ditto with other noble gases. H₂, that would be an explosive mixture and the entire atmosphere would explode, killing all life. Methane, also explosive.

    4 Answers · Science & Mathematics · 17/02/2019

  5. Slowly, the hydrogen available to make new stars is being used up.  It's also disbursing, getting more and more rarefied - so, new star formation will dwindle, then finally end. 

    14 Answers · Science & Mathematics · 08/12/2019

  6. ...of the Sun comes from nuclear fusion in which hydrogen atoms combine to form helium and in the process release...step” the intermediate components merely revert back to hydrogen atoms and no fusion results. Fusion...

    6 Answers · Science & Mathematics · 21/02/2019

  7. Hydrogen and Helium 

    11 Answers · Science & Mathematics · 10/01/2020

  8. ...stage uses Helium to purge fuel gases comprising of Hydrogen mixed with Oxygen in the fuel vessel. It is pumped...

    5 Answers · Science & Mathematics · 11/08/2019

  9. No. The sun is just a ball of hydrogen undergoing nuclear fusion. It is an atomic bomb explosion. That explosion doesn't care about direction. It is the same in all directions.

    7 Answers · Science & Mathematics · 18/02/2019

  10. ...real question would be providing nitrogen with it's high molecular weight or hydrogen with a low molecular weight for rapid movement and acceleration? The strange (?) thing...

    8 Answers · Science & Mathematics · 25/12/2019

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