OriginsAnswer
Did time begin at the Big Bang?
Scientists have measured the hot early universe in detail, but whether time itself had a first moment is still an open question.
TOPIC
big bang.
Stories and answers about #big bang
FROM THE QUESTION LIBRARY
Short answers, with sources.
OriginsAnswer
How old is the universe, and how do we know?
About 13.8 billion years, read from the oldest light in the sky and checked against the oldest stars, with one real puzzle still open about how fast space is stretching today.
OriginsAnswer
If the universe is expanding, what is it expanding into?
Cosmic expansion means distances between faraway galaxies grow; it does not require a wall, an edge, or a room beyond space.
God & BeliefAnswer
Was the Big Bang first proposed by a priest?
Georges Lemaître, a Belgian priest and physicist, proposed the ideas that grew into the Big Bang, and he worked hard to keep his science and his faith distinct.
The UniverseAnswer
Why is there any matter left in the universe at all?
The matter in every star and body may be the remnant of a tiny early imbalance whose cause remains unknown.
OriginsAnswer
Why is there something rather than nothing?
Physics can trace the universe back a long way, but every answer starts with something already there, so here is what science, faith and philosophy each offer.
The author’s own research on this
Author’s hypothesisWhat is the HD-Blast hypothesis?
OriginsEssay · personal view
What Came Before the Big Bang? My Best Guess So Far
The Big Bang explains an early hot, dense universe. It may not be the first page of reality. Here is my best current hypothesis—and the evidence that would have to judge it.
Life in the UniverseEssay · personal view
The Questions I Would Ask an Alien
If I ever met a visitor from another world, I would skip the small talk. I would ask what its civilization knows about beginnings—and how it knows.