[DOC] [TLE] Big Bang nucleosynthesis - Wikipedia [PAR] In physical cosmology, Big Bang nucleosynthesis refers to the production of 
nuclei other than ... Essentially all of the elements that are heavier than lithium 
were created ... There are two important characteristics of Big Bang 
nucleosynthesis (BBN): .... and the protons and neutrons have a strong tendency 
to form helium-4. [DOC] [TLE] Nucleosynthesis - Wikipedia [PAR] Nucleosynthesis is the process that creates new atomic nuclei from pre-existing 
nucleons, primarily protons and neutrons. The first nuclei were formed about 
three minutes after the Big Bang, through ... These processes began as hydrogen 
and helium from the Big Bang collapsed into the first stars at 500 million years. [DOC] [TLE] The First Stars in the Universe - Scientific American [PAR] The new models indicate that the first stars were most likely quite massive and ... 
The earliest stars also produced and dispersed the first heavy elements, paving 
... But by a billion years after the big bang, some bright galaxies and quasars had 
... When did these first luminous objects arise, and how might they have formed? [DOC] [TLE] How elements are formed | Sciencelearn Hub [PAR] Oct 22, 2009 ... An element is a pure substance made of atoms that are all of the same type. At 
present, 116 elements are known, and only about 90 of these occur naturally. ... 
in the so-called 'Big Bang', only the lightest elements were formed ... Bang cooled
, stars formed, and these then grouped together to form galaxies. [DOC] [TLE] Our Expanding Universe: Age, History & Other Facts - Space.com [PAR] Jan 13, 2015 ... The universe was born with the Big Bang as an unimaginably hot, dense point. ... 
During the first three minutes of the universe, the light elements were born during 
... after the Big Bang, matter cooled enough for atoms to form during the era ... 
The Big Bang did not occur as an explosion in the usual way one... [DOC] [TLE] Why did the Universe start off with Hydrogen, Helium, and not much ... [PAR] Jul 5, 2013 ... Practically all of these heavy elements were formed in generations of stars: stars 
that ... In fact, if you'll remember what the Big Bang says, the Universe is ... 
become the atoms in our Universe, but they've got a lot to go through first. ... up 
combining with one other neutron and two protons to form helium-4,... [DOC] [TLE] The early universe | CERN [PAR] In the first moments after the Big Bang, the universe was extremely hot and dense
. ... Within minutes, these protons and neutrons combined into nuclei. ... These 
were mainly helium and hydrogen, which are still by far the most abundant ... 1.6 
million years later, gravity began to form stars and galaxies from clouds of gas. [DOC] [TLE] The big bang left the universe with its first atoms [PAR] WHERE DID ALL THE ELEMENTS COME FROM?? In the very beginning, both 
space and time were created in the Big Bang. It happened 13.7 billion years ago. [DOC] [TLE] How are light and heavy elements formed? (Advanced) - Curious ... [PAR] Jun 27, 2015 ... The lightest elements (hydrogen, helium, deuterium, lithium) were ... According to 
the Big Bang theory, the temperatures in the early universe were so high ... This 
resulted in the formation of light elements: hydrogen, deuterium, helium (two ... 
These masers occur at sites where massive stars are being born. [DOC] [TLE] The Big Bang Theory [PAR] The galaxies were not all clumped together, but rather the Big Bang lay the ... As 
light from distant galaxies approach earth there is an increase of space ... As 
these two materials are created together, they collide and destroy one another ... 
As the universe expanded further, and thus cooled, common particles began to 
form. [DOC] [TLE] Formation of Elements - History, Formation Of Elements ... [PAR] Elements are identified by the nuclei of the atoms of which they are made. ... 
Heavy elements can be formed from light ones by nuclear fusion reactions; these 
are ... and density called

Question: When the Big Bang occurred, these 2 elements were first to form as they are the lightest
Answer: hydrogen & helium