When we go backwards in time through the history of the cosmos, the distances and volumes shrink, while the average energy ...

The Big Bang theory suggests that the universe began as a hot, dense point, expanding into the cosmos we observe today.

Space and time appear at the Big Bang singularity, so questions of what happens "before" the Big Bang are not well defined. As far as science can tell, there is no before; the Big Bang is the ...

Black hole formation could be a little Big Bang in reverse, coupling the matter of a dying star with dark energy, the ...

The present monograph is a carefully developed overview about the mathematical details of the big bang singularity, mainly within (but not restricted to) general relativity theory. Chapter 1 presents ...

Our current understanding of the universe is based on the Big Bang model. The model proposes that approximately 13.8 billion years ago, the universe came into existence as a singularity and ...

Space and time appear at the Big Bang singularity, so questions of what happens “before” the Big Bang are not well defined. As far as science can tell, there is no before; the Big Bang is the ...

Space and time appear at the Big Bang singularity, so questions of what happens“before” the Big Bang are not well defined. As far as science can tell, there is no before; the Big Bang is the ...

From 1965 to 1966, the British theoretical physicists Stephen Hawking and Roger Penrose presented a number of mathematical theorems demonstrating that the spacetime of an expanding universe must end ...