Physics, 28.01.2020 17:05 theledfords855
Kathy drew a timeline to show some of the major events that occurred during the evolution of the universe. which best describes kathy’s error? quarks and electrons formed at 10–35 s, not 10–10 s. protons formed first, then neutrons formed at 100 s. nebulae formed around 109 y after hydrogen and helium formed. hydrogen and helium were created at 3000 s, before nebulae formed.
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