New answers tagged big-bang
Every thesis submitted for a PhD in Cambridge is archived at the Cambridge University Library. They should be able to get you a copy (for a fee). See http://www.lib.cam.ac.uk/deptserv/manuscripts/dissertations.html
Today, most physicist "believe" in the inflationary cosmology which solve many problems in cosmology and it doesn't indicate our universe started with a singularity.
Red shift. is a really quick answer. whichever way we look, stuff is moving away from us. and the further away it is the faster it's moving.
Dark matter/energy is related to the Big Bang but probably not as much as your popular thinking implies (don't really know what you're referring to). So let me explain the link. Most people know dark matter solves missing gravity in galaxy's. However this is only the first and most obvious clue that led to dark matter. Another one is key to inflation ...
Using the standard model of cosmology we calculate the Hubble time to obtain an estimate of the age of the universe. Yes, 13.8 billion years. But IMHO there's an issue worth discussing, to do with something John said in another answer: "A distant observer sees falling objects slow as they approach the event horizon and asymptotically approach zero speed at ...
Strictly speaking the FLRW metric doesn't specify that time starts at the Big Bang. It specifies only that the Big Bang is a singular point so it is impossible to analytically continue a geodesic back in time past the Big Bang. If it helps to make things clearer, exactly the same happens with an object falling into a black hole. A geodesic that crosses the ...
Let me clear up a few misconceptions. The edge of our observable universe would contain information from the beginning of the universe, since it is a particle horizon. However, the edge of the observable universe is not currently visible to us. What we can currently see only goes as far back as the recombination era, when electrons first joined with nuclei ...
Top 50 recent answers are included