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Tag Archives: Big Bang
Is cosmology in crisis?
In past posts, when I’ve written about the expansion of the universe, I’ve generally referred to the rate of that expansion, the Hubble constant, as being around 70 km/s/megaparsec, that is, for every megaparsec a galaxy is distant from us, … Continue reading
Posted in Zeitgeist
Tagged Astronomy, astrophysics, Big Bang, Cosmology, Physics, Science, Space
23 Comments
Gravitational waves discovery now officially dead
I tweeted this yesterday, but it deserves a blog entry: Gravitational waves discovery now officially dead : Nature News & Comment. A team of astronomers that last year reported evidence for gravitational waves from the early Universe has now withdrawn the … Continue reading
Cosmic inflation appears to have shifted from settled science back to speculation
You can get background on what I’m talking about in this post here and here. Probably the best thing to do is let the experts weigh in on this. Planck team measurement consistent with our (Flauger et al.) estimates and … Continue reading
The size of the observable universe is complicated.
The radius of the observable universe is often stated to be 46 billion light years. From a certain point of view, this is true, but I think it’s a bit of a misleading statement. Occasionally you also see people say that … Continue reading
“The Universe Should Not Have Lasted for More than a Second”: The limitations of scientific theories
Stan Hummel called my attention to, and asked for my thoughts on this article: Big Bang Theory Challenged –“The Universe Should Not Have Lasted for More than a Second”. British cosmologists are puzzled: they predict that the universe should not have … Continue reading
The Big Bang’s Identity Crisis – The Nature of Reality
Think of the Big Bang, and you probably imagine a moment in time when matter, energy and space itself all burst into existence at once. Yet many astrophysicists now believe that the “Big Bang” was actually two distinct events: first … Continue reading
Growing doubt that gravitational waves were actually detected
Nature has an article up describing the problems with the BICEP2 results that are now being identified by various scientists. It’s actually the second one I’ve seen them publish on this. The astronomers who this spring announced that they had … Continue reading
Americans may be more scientifically literate than evolution questions show
Dan Kahan has an interesting post showing that when Americans are asked the, “Did humans develop from earlier species?” question, it matters how it is asked. As it’s usually asked, when people answer, they are often asserting a religious cultural … Continue reading
Posted in Zeitgeist
Tagged Big Bang, Dan Kahan, Evolution, Science and Religion, Science in Society, Scientific literacy, United States
13 Comments
The theoretical preference for a timeless and eternal reality
Ethan Siegel has an excellent post up contemplating the various models of the timeline of the universe. It’s only human to ask the most fundamental of all questions: where did all this come from? And we like to think we … Continue reading
