What came first after the Big Bang?

According to NASA, after inflation the growth of the universe continued, but at a slower rate. As space expanded, the universe cooled and matter formed. One second after the Big Bang, the universe was filled with neutrons, protons, electrons, anti-electrons, photons and neutrinos.

How long did hydrogen and helium form before?

It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe.

Did the Big Bang produce helium?

Light elements (namely deuterium, helium, and lithium) were produced in the first few minutes of the Big Bang, while elements heavier than helium are thought to have their origins in the interiors of stars which formed much later in the history of the Universe.

Why were hydrogen and helium The first elements?

The early universe (left) was too hot for electrons to remain bound to atoms. The first elements — hydrogen and helium — couldn’t form until the universe had cooled enough to allow their nuclei to capture electrons (right), about 380,000 years after the Big Bang.

Why were hydrogen and helium The first elements created?

The low-mass elements, hydrogen and helium, were produced in the hot, dense conditions of the birth of the universe itself. Approximately 15 billion years ago the universe began as an extremely hot and dense region of radiant energy, the Big Bang. Immediately after its formation, it began to expand and cool.

Which came first hydrogen or helium?

Scientists have inferred that helium hydride was this first, primordial molecule. Once cooling began, hydrogen atoms could interact with helium hydride, leading to the creation of molecular hydrogen — the molecule primarily responsible for the formation of the first stars.

Why was helium and hydrogen the first elements created?

Who discovered the abundance of hydrogen and helium?

Discovery and Naming: The first evidence of helium was obtained on August 18th, 1868 by French astronomer Jules Janssen. While in Guntur, India, Janssen observed a solar eclipse through a prism, whereupon he noticed a bright yellow spectral line (at 587.49 nanometers) emanating from the chromosphere of the Sun.

Where does hydrogen and helium originate?

The low-mass elements, hydrogen and helium, were produced in the hot, dense conditions of the birth of the universe itself. The birth, life, and death of a star is described in terms of nuclear reactions. The chemical elements that make up the matter we observe throughout the universe were created in these reactions.

Where did the first hydrogen come from?

How was helium formed after the Big Bang?

Within about 3 minutes after the Big Bang, conditions cooled enough for these protons and neutrons to form hydrogen nuclei. This is called the era of nucleosynthesis. Some of these nuclei combined to form helium as well, though in much smaller quantities (just a few percent).

What was the universe made of before the Big Bang?

Immediately after the Big Bang, before the first stars in the Universe ever formed, the Universe consisted of hydrogen (element #1), helium (element #2), and pretty much nothing else.

How long after the Big Bang did hydrogen appear?

Hydrogen didn’t appear until the universe had spread out — and subsequently cooled — enough for the first protons and neutrons, and later simple atoms, to form. Between about 10-12 and 10-6 second after the Big Bang, neutrinos, quarks, and electrons formed.

What is the origin of hydrogen and helium?

The creation of Hydrogen at Helium. Most scientists believe that the percentage of Hydrogen and Helium has remained the same since the big bang so this should explain the current ratio of hydrogen and helium. 3 seconds after the event when the universe was billions of degrees in temperature protons and neutrons were produced in exact numbers.