it happened about 13.7 billion years ago by the big bang when everything started expanding
It is currently believed that the Universe started something like 14 billion years ago, with the Big Bang.
The universe is expanding.
They were formed in supernovae.
The prevailing scientific theory is that the universe started with the Big Bang.
Uranium is formed in the universe by stellar nucleosynyhesis.
No. The hydrogen in the universe was formed during the Big Bang. Stars consume hydrogen, fusing it into helium.
The Universe.
mercury
It is the Universe that expanded, not specifically the Earth. Earth was formed much later than the Big Bang. The Universe continues expanding, though.It is the Universe that expanded, not specifically the Earth. Earth was formed much later than the Big Bang. The Universe continues expanding, though.It is the Universe that expanded, not specifically the Earth. Earth was formed much later than the Big Bang. The Universe continues expanding, though.It is the Universe that expanded, not specifically the Earth. Earth was formed much later than the Big Bang. The Universe continues expanding, though.
Improbable as the answer may seem, I think it is "ylem" - is that worth 1% of your winnings?
All the compounds existing in the universe are formed.
Galaxies formed from dust, matter, and energy that formed from the explosion of the universe.