When pondering how likely life is to develop on other worlds, or what types of life might develop, we always have to always bear in mind that we currently only have one example to work with. And that example has one extremely unusual attribute, a large moon, at least large in relation to the size … Continue reading Did a cosmic fluke make life on land possible?
Tag: Astronomy
BICEP2 team publishes results, backpedals on certainty
The BICEP2 team have officially published their results. They had announced to much fanfare back in March, that they had detected primordial gravitational waves, and hence cosmic inflation. But the results have increasingly been met with doubt, primarily centered on the possibility of interstellar dust causing the observed results. From a New Scientist article on the published paper: It … Continue reading BICEP2 team publishes results, backpedals on certainty
Neil deGrasse Tyson Turns Down Pluto Debate Challenge
And speaking of the outer solar system, it seems that Neil deGrasse Tyson isn't interested in debating whether or not Pluto is a planet. If you were looking forward to seeing astrophysicist and "Cosmos" host Neil deGrasse Tyson debate how Pluto should be classified, don't hold your breath. Tyson says he's done debating. The planetary scientist in charge of … Continue reading Neil deGrasse Tyson Turns Down Pluto Debate Challenge
Life on the Billionth Rock From the Sun | Seth Shostak
Seth Shostak has an article at HuffPost on asteroids. Not the usual we-need-to-prepare-for-incoming, but discussing something I've noted before that the space age needs: an economic incentive. As some of us have discussed, mining asteroids looks like it might be an excellent candidate. These rocks are a resource. The fact that they're in small chunks makes … Continue reading Life on the Billionth Rock From the Sun | Seth Shostak
What Astronomy Says About Religion | Seth Shostak
It's a recurrent experience that never fails to perplex me: Random people will seek my advice on questions of religion. Rather than posing queries about how the cosmos works, they want me to enlighten them on why. Bottom line: We were so ordinary as to be thoroughly invisible -- as would be any other worlds, … Continue reading What Astronomy Says About Religion | Seth Shostak
Ugh, really Americans? Poll reveals majority of Americans distrust Big Bang theory
In a new national poll on America's scientific acumen, more than half of respondents said they were "not too confident" or "not at all confident" that "the universe began 13.8 billion years ago with a big bang." via Poll reveals majority of Americans distrust Big Bang theory - UPI.com.
Neil deGrasse Tyson in ‘The Inexplicable Universe’
http://www.youtube.com/watch?v=Cgo1uObQ3Js If you're enjoying the Cosmos series, you might enjoy these lectures by Neil deGrasse Tyson, which I discovered yesterday is now on Netflix. The lectures are fairly far ranging covering things like string theory, dark matter, dark energy, gravitational anomalies, and many other things. If you're well read in science, a lot of this might … Continue reading Neil deGrasse Tyson in ‘The Inexplicable Universe’
Visualization of ancient cosmological models
Just to keep the discussion of the posts I'm doing on cosmology in context: As part of Topoi 1, Group-D, Sebastian Szczepanski and I developed software for the visualization of ancient cosmological theories. These included the 4th cent. BCE planetary models of Eudoxus, Aristotle, and Calippus, as well as the basic planetary models of Ptolemy’s Almagest. … Continue reading Visualization of ancient cosmological models
xkcd: Cosmologist on a Tire Swing
A few years ago the "it's senseless to ask what came before the big bang because there was no before" meme was hot. I remember Stephen Hawking saying it in his documentary a year or two ago. There now seems to be a good amount of push-back from the rest of the cosmology community to this certitude. … Continue reading xkcd: Cosmologist on a Tire Swing
Does anyone have a link to a detailed description of the cosmological horizon problem?
So, I'm trying to understand cosmic inflation a bit better, and I've concluded that I don't understand one of the chief itches that it scratches. I know the standard explanation about regions of space being too far apart to have ever interacted, but I don't get why they couldn't have interacted when the universe was … Continue reading Does anyone have a link to a detailed description of the cosmological horizon problem?
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