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  #51  
Old 01-04-2013, 06:27 AM
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Default Re: Drive by science

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Originally Posted by MonCapitan2002 View Post
There is an article on Yahoo about how astronomers have discovered a baby star system being born. :aww:

Within the Milky Way galaxy there are many nebula and dust clouds that are 'nurseries' for stars being born. This is being studied and has been for several years. Most stars have some kind of planetary system. I believe the 'Great Nebula' in Orian is the birth place of many stars.
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  #52  
Old 01-18-2013, 05:51 AM
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Default Re: Drive by science

I'ma a firing my lasers, scratch that, WATER bullets from space.

Star Found Shooting Water "Bullets"

:shoopdawhoop:
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  #53  
Old 01-19-2013, 01:42 AM
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Default Re: Drive by science

Also if you like the sounds of nature, perhaps you'd like to know about this.

World’s largest natural sound archive now fully digital and fully online.

TLR, I'm looking at you.

Direct link, not just birds, frogs and other creatures. Never be fooled by a digital recording of NW frogs again!

http://macaulaylibrary.org/
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  #54  
Old 01-19-2013, 03:30 AM
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Default Re: Drive by science

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Originally Posted by Qingdai View Post
I'ma a firing my lasers, scratch that, WATER bullets from space.

Star Found Shooting Water "Bullets"

:shoopdawhoop:
That would have to be a second or third generation star at least, no first generation star would have any oxygen in the dust cloud surrounding it.
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Old 01-21-2013, 04:20 PM
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Default Re: Drive by science

Neanderthal Baby Will Need Human Surrogate Mother | The Mary Sue

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According to [Der Spiegel,] Church is currently developing technology in his lab that can be used to make human cells similar to those of Neandertals. Eventually, an “adventurous female human” needs to be found as a surrogate mother for the first Neandertal baby, Church is cited as saying, and, from many individuals, “a kind of Neandertal culture” could arise that could gain “political significance.”
The fuck?

Ethics? Social and emotional difficulties faced by such a hypothetical child?

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  #56  
Old 01-21-2013, 04:41 PM
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Default Re: Drive by science

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Originally Posted by thedoc View Post
no first generation star would have any oxygen in the dust cloud surrounding it.
:fixed:


Besides, any star where we can see this kind of detail is going to be a second+ generation star. First generation (or population III) stars are so massive, and therefore short-lived, that they died long ago.
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  #57  
Old 01-21-2013, 06:00 PM
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Default Re: Drive by science

First generation stars would have been born our of a cloud of molecular Hydrogen and small amounts of Helium, which could be refered to as a dust cloud, or do you have a specific definition of dust that you would like to share? I would think that small particles of frozen Hydrogen would qualify as dust.
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  #58  
Old 01-21-2013, 07:00 PM
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Default Re: Drive by science

Astronomers define "dust" as fine, irregularly-shaped particles of carbon and carbon compounds and/or silicates (usually less than a micron in diameter) in interstellar space. So first-generation stars wouldn't be expected to have any dust associated with them.


Cheers,

Michael
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  #59  
Old 01-21-2013, 08:09 PM
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Default Re: Drive by science

I suppose a 'cloud of gas' would have been more accurate?
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  #60  
Old 01-21-2013, 10:41 PM
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Default Re: Drive by science

:unnod:

The difference is rather important; dust particles and molecules of heavier elements are particularly effective at cooling the gas, thereby making the collapse into a protostar that much easier. Hydrogen and helium cannot cool as effectively by themselves, meaning that you need a really massive amount of gas for the self gravity to overcome the internal pressure. Hence the high mass of the first-generation stars.
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  #61  
Old 01-25-2013, 06:00 AM
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Default Re: Drive by science

So being that no one besides TLR is interested in talking about bird calls, I got linked to another site of bird songs. Sharing sounds on the web. Use and prosper.

xeno-canto :: Sharing bird sounds from around the world
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  #62  
Old 01-26-2013, 07:18 PM
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Default Re: Drive by science

Not really science, but I've long been fascinated by the intelligence of dolphins.

Here's a recent example that reminded me that we vastly underrate their intelligence:

BBC News - Dolphin rescue caught on underwater camera
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  #63  
Old 01-26-2013, 07:37 PM
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Default Re: Drive by science

I just put that in the Miscellany thread. Isn't that fascinating? The dolphin and human communicated effectively and solved a problem together without a shared language.

And certainly that is science isn't it?
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  #64  
Old 01-26-2013, 07:45 PM
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Default Re: Drive by science

Quote:
Originally Posted by LadyShea View Post
I just put that in the Miscellany thread.
Whoop, I missed it!

Of course it's always easy to over-interpret dolphin actions in human terms. But there are very few creatures - and no domesticated ones I know of - that would behave in that fashion. They're amazing creatures. It's sad we're driving them to extinction in many parts of the world.
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  #65  
Old 01-26-2013, 08:01 PM
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Default Re: Drive by science

I should have put it here rather than Miscellany, this is more appropriate.

Obviously there is a problem of anthropomorphizing in interpreting the behavior of another being..but we can't really imagine what an alien's thought processes might be like so have to sort of go with what we know. But clearly the dolphin was cooperating in this case.

I am lucky enough to live where there is a very stable, and in many ways protected, population of Atlantic bottlenose dolphins. I have seen them show off for audiences, race our boat, and come out of the water to a person in our boat to see if we had some mullet for it.

Look at this video of a dolphin playing with a cat...I have been to that park :)
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  #66  
Old 01-26-2013, 08:09 PM
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Default Re: Drive by science

To me that just screams curiosity. They've clearly never seen anything close to a cat before! And that cat doesn't look like it's familiar with dolphins!

The cat looks in a weird confusion of trying to catch the giant fish, and scent mark the strange new friend. What a great video!
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  #67  
Old 01-26-2013, 08:18 PM
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Default Re: Drive by science

It's an awesome video. The small size and age of the park makes me think the cats (there are dozens and dozens of ferals fed and vet-cared for there) and the resident dolphins probably know of each other.
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  #68  
Old 01-26-2013, 08:31 PM
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Default Re: Drive by science

This one rocks too, from Ireland

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  #69  
Old 02-25-2013, 04:31 PM
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Default Re: Drive by science

And they say no on links to us.

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  #70  
Old 03-06-2013, 04:51 PM
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Default Re: Drive by science

TWiM #51: Cave science with Hazel Barton

I just finished listening to Hazel Barton talk about cave microbiology. The most interesting point:
- She thinks that some cave formation is assisted by microbes over geological time, typically by explaining how certain chemicals get into cave systems, like the CO2 in Carbonic acid is the waste product of microbes in the soil.

Bacterial Calcium Carbonate Precipitation in Cave Environments: A Function of Calcium Homeostasis
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  #71  
Old 03-09-2013, 04:15 PM
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Default Re: Drive by science

http://www.clevelandleader.com/node/20455

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A preliminary examination of water samples taken from the ancient, subglacial Lake Vostok located near the South Pole in Antarctica reveals that its inhabitants aren't found anywhere else on Earth. According to Sergei Bulat, a researcher at the Laboratory of Eukaryote Genetics at the St. Petersburg Nuclear Physics Institute, the species of bacteria found in the probes of water from Lake Vostok do not belong to any of the 40+ known subkingdoms of bacteria.
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  #72  
Old 03-10-2013, 10:58 PM
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Who Goes There?
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Old 03-11-2013, 04:07 AM
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Default Re: Drive by science

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Originally Posted by LadyShea View Post
"Unclassified Life" Not Found Anywhere Else on Earth Discovered in Antarctic Lake | Cleveland Leader

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A preliminary examination of water samples taken from the ancient, subglacial Lake Vostok located near the South Pole in Antarctica reveals that its inhabitants aren't found anywhere else on Earth. According to Sergei Bulat, a researcher at the Laboratory of Eukaryote Genetics at the St. Petersburg Nuclear Physics Institute, the species of bacteria found in the probes of water from Lake Vostok do not belong to any of the 40+ known subkingdoms of bacteria.
Russian scientists dismissed earlier reports of finding bacteria of a new type, say it was contamination.
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  #74  
Old 03-11-2013, 04:42 AM
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Contaminated by what? Alien spores? :chin:
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Old 03-11-2013, 04:58 PM
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Martian microbe fossils.
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