Origin of life: This time it's salt water

One of these days, I am going to make a list of all the implausible origin of life scenarios I have heard, but here is one, involving ice particles on one of Saturn's moons, Enceladus :

These salty ice grains suggest that the interior of the moon may have liquid water that is washing salty minerals out of rock into a subterranean sea.

The scientists write that the presence of alkaline salt water, along with the organic compounds and thermal energy that have been observed at the south pole, "could provide an environment well suited for the formation of life precursors."

For way more origin of life stories, go here.

Cosmology: Who really cares how it washes out at the end?

At the Canadian Science Writers’ Association convention in Sudbury, Ontario, our Sunday dinner speaker was American theoretical physicist Lawrence Krauss of Arizona State University, who presented sample clips from famous sci-fi films. And a whole lot more.

Would you be astonished to learn that the films portray implausible or impossible physics? No?

Filmmakers value audience numbers more than atomic numbers. H

is clips entertained, but did not surprise:However, his talk frequently targeted religion and politics: although he professed to respect theists, he offered snarky asides suggesting that fear of science is growing in Canada (because it might damage religion), adding, "In many ways I hope it does, but it wasn't designed to do that."

Dr. Krauss also told the assembled science communicators that in many key science controversies, there is only one side and journalists confuse matters by seeking out both sides.Not so. New discoveries in science often result from minor, not major, deviations from an expected result.

Read more here.

New discoveries in science

At the Canadian Science Writers’ Association convention in Sudbury, Ontario, our Sunday dinner speaker was American theoretical physicist Lawrence Krauss of Arizona State University, who presented sample clips from famous sci-fi films. And a whole lot more.

Would you be astonished to learn that the films portray implausible or impossible physics? No? Filmmakers value audience numbers more than atomic numbers. His clips entertained, but did not surprise:

However, his talk frequently targeted religion and politics: although he professed to respect theists, he offered snarky asides suggesting that fear of science is growing in Canada (because it might damage religion), adding, "In many ways I hope it does, but it wasn't designed to do that."

Dr. Krauss also told the assembled science communicators that in many key science controversies, there is only one side and journalists confuse matters by seeking out both sides.

Not so. New discoveries in science often result from minor, not major, deviations from an expected result.

Read more here.

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Response to search engine query: What is this blog about?

I was asked to define it for a "deep" search engine group, Feedmil, and replied as follows:

Colliding Universes takes a critical look at cosmology, especially its many unexplained assumptions. Here’s one:

Earth is not special. There must be many planets that host life forms.

Now, what if we find 3000 exoplanets and none host life forms.

Does that suggest that Earth is special?

No, many cosmologists would say. We just haven’t looked hard enough. Find 3000 more.

It becomes obvious that their research is intended to confirm the “not special” view, and that – for both practical and philosophical reasons – it cannot be disconfirmed.

The practical reason is that they can always argue, “They’re out there somewhere.” The philosophical reason is that they are determined to believe what they want to believe.

That’s fine, but don’t call it science.

Incidentally, even if, after a search of 6000, two other planets were found that had life forms, we would know that there are three special planets, ours being one.

But don’t expect the pop science media to interpret it that way.

See also:

"Privileged planet" astronomer Guillermo Gonzalez: Dissing St. Carl Sagan in his own church

Study: Sun not special, therefore alien life should be common?


Galactic habitable zone not unique, computer sim suggests

Does our solar system occupy a unique position in the universe or just an ordinary one?

Rare? Solar systems like ours are rare?

Astronomer argues that we can test whether Earth is fine-tuned as a science lab

"Serious push to find more exoplanets

Exoplanets: Will intelligence be common or rare?

Extraterrestrial life: Immanuel Kant, meet Frank Drake and Carl Sagan

From "Looking for planets like ours", a review by Michael Brown of Alan Boss's The Crowded Universe: The Search for Living Planets:

Even if the Kepler and COROT missions do find an abundance of planets, the Kantian revolution will not be complete. The new planets might be exactly the same size as Earth and orbit their stars at the same distance, and although an astronomer might be willing to call such a thing Earth-like, most people will look for more. Does it have liquid water? Does it have a recognizable atmosphere? And, inevitably, could it — does it — support life?

Finding the answers to these questions will take decades. Kepler and COROT are merely steps along the way. In the meantime, we can take solace from Kant: "I am of the opinion that it is not particularly necessary to assert that all planets must be inhabited. However, at the same time it would be absurd to deny this claim with respect to all or even to most of them."

It took nearly 250 years to prove him mostly right the first time. With a little luck and perseverance — and, as Boss shows, a lot of work by astronomers around the world — the final step may just come a little faster.

I wonder whether Kant would regard the discovery that bacteria had once lived on Mars or might live elsewhere - if it is made - as evidence for his position.

See also:

Alfred Russel Wallace on why Mars is not habitable

See also: Boldly go, but why, exactly?Extraterrestrials:

Several million UFOs later - the state of the question

Younger astronomers less likely to believe than older ones?

So what if fossil bacteria are found on Mars? Polls show many Americans expect Star Trek!

Some scientists hope that the aliens are NOT out there!

Increase in UFO sitings in Canada - what's behind that?

Recession? Finally, big science gets the picture: Think payload

From a Nature editorial:

Whether dealing with the Labour government or the Conservative opposition, UK scientists as a whole need to avoid giving the impression that they are impervious to the requirements of the nation and that any outsider should simply give them the money and leave them to get on with it. This will be especially true over the next 12 months, as the country heads towards a general election and as both main political parties plan future expenditures.

Yes, exactly. The growing ranks of the unemployed do not oppose science, but they do want to know its payload. Will their children be more likely to have jobs if they study science? Or is it just an expensive hobby for science profs?

That's a difficult question because often no one really knows whether a given pioneer research project will lead anywhere. Electricity led somewhere; phrenology did not. At the time, who knew? Tactful and honest answers are very well advised.