dense early universe that cooled as it expanded. This transition happened after about 400,000 years following the Big Bang. 3) The relative abundances of light elements (He-4, He-3, Li-7 ...

(THE CONVERSATION) If you want to know what happened in the earliest years of the universe, you are going to need a very big, very specialized telescope. Much to the joy of astronomers and space fans ...

One of Stephen Hawking’s last theories before his death in 2018 predicts the ... he picked apart billions of years of processing of elements in our universe, from what elements were generated ...