SERVING THE QUANTITATIVE FINANCE COMMUNITY

 
User avatar
rmax
Posts: 5976
Joined: December 8th, 2005, 9:31 am

Re: News from Outer Space

March 9th, 2018, 2:29 pm

On the subject of diamonds today:

What scientists found trapped in a diamond: a type of ice not known on Earth - LA Times March 9 2018

"Trapped in the rigid structure of diamonds formed deep in the Earth's crust, scientists have discovered a form of water ice that was not previously known to occur naturally on our planet.

The finding, published Thursday in Science, represents the first detection of naturally occurring ice-VII ever found on Earth. And as sometimes happens in the scientific process, it was discovered entirely by accident."

and the original article in Nature:

CaSiO3 perovskite in diamond indicates the recycling of oceanic crust into the lower mantle
Nature volume 555, pages 237–241 (08 March 2018)
"Laboratory experiments and seismology data have created a clear theoretical picture of the most abundant minerals that comprise the deeper parts of the Earth’s mantle. Discoveries of some of these minerals in ‘super-deep’ diamonds—formed between two hundred and about one thousand kilometres into the lower mantle—have confirmed part of this picture.."
Dr. Hoenikker used to say that any scientist who couldn't explain to an eight-year-old what he was doing was a charlatan.
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Re: News from Outer Space

March 10th, 2018, 1:31 am

TIANGONG-1 reentry projections:

http://blogs.esa.int/rocketscience/2018 ... y-updates/

(The boffins have narrowed down the reentry point to about 80% of the Earth surface.)

P.S. A bit of BOTEC suggests that a deorbiting object going 18,000 mph with a 24 window of retry and a ±10 mile cross-track uncertainty puts less than 4% of the Earth's surface at risk.
 
User avatar
Alan
Posts: 9549
Joined: December 19th, 2001, 4:01 am
Location: California
Contact:

Re: News from Outer Space

March 11th, 2018, 5:55 am

New footage presented by Elon Musk and Jonathan Nolan at the SXSW conference
Life cannot just be about solving one sad problem after another. There need to be things that inspire you, that make you glad to wake up in the morning and be part of humanity. That is why we did it. We did for you. -- Musk
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Re: News from Outer Space

March 11th, 2018, 1:58 pm

Some people like to fix existing problems. Others like to build new solutions. The first group helps pull everyone up to the present-day's standard of living. But the second group pushes that standard of living higher up for the future.

The people that say we should not waste money on space while there are so many problems on Earth are horribly short-sighted, bad risk managers, and woefully ignorant of economics (hint: space money is spent on Earth, not space).
 
User avatar
ppauper
Posts: 69113
Joined: November 15th, 2001, 1:29 pm

Re: News from Outer Space

March 11th, 2018, 2:19 pm

The people that say we should not waste money on space while there are so many problems on Earth are horribly short-sighted, bad risk managers, and woefully ignorant of economics (hint: space money is spent on Earth, not space).
or maybe they're just not Keynesians
Yes, it creates jobs, but so does paying people to dig holes and fill them in again.

There is a difference between building infrastructure which people use (a highway or an airport) and having people dig holes and fill them in again, and the issue is where on the spectrum does space lie
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Re: News from Outer Space

March 11th, 2018, 3:19 pm

The people that say we should not waste money on space while there are so many problems on Earth are horribly short-sighted, bad risk managers, and woefully ignorant of economics (hint: space money is spent on Earth, not space).
or maybe they're just not Keynesians
Yes, it creates jobs, but so does paying people to dig holes and fill them in again.

There is a difference between building infrastructure which people use (a highway or an airport) and having people dig holes and fill them in again, and the issue is where on the spectrum does space lie
Good point! I'd say the spectrum looks like this:

"Make-Work"........."Make Roads"..........."Make the Future"

Make work feeds people for the duration of the project.

Making roads feeds the construction people for the duration of the project and adds a bit to the local economy around the road for a couple of decades of the life of the road.

Making the future with investments in space (& science) has the short-term Keynesian effects but also has a long-term global effect in creating new materials, engineered components, manufacturing capabilities, and systems. It's effects are cumulative and unbounded.

The long-term value of knowledge is greater than the long-term value of a physical assets which is greater than the long-term value of short-term make-work.
 
User avatar
ppauper
Posts: 69113
Joined: November 15th, 2001, 1:29 pm

Re: News from Outer Space

March 11th, 2018, 7:32 pm

 
User avatar
trackstar
Topic Author
Posts: 26400
Joined: August 28th, 2008, 1:53 pm

Re: News from Outer Space

March 13th, 2018, 11:40 am

As we get closer to space travel, this is interesting work:

NASA Twins Study Verifies Long-Term Health Effects of Space Travel - Space.com March 12 2018 

Earlier results reported here

One of the strangest findings:

"In addition, whole-genome sequencing of Mark and Scott revealed that both twins have hundreds of unique genetic mutations. 

"RNA (transcriptome) sequencing showed more than 200,000 RNA molecules that were expressed differently between the twins," NASA officials wrote. Researchers "will look closer to see if a 'space gene' could have been activated while Scott was in space," the officials added."

If Darwin's theory of evolution is correct, why would we have a 'space gene'?  

Could be though and I guess some of the dominant space genotypes are located around here. :D
 
User avatar
ppauper
Posts: 69113
Joined: November 15th, 2001, 1:29 pm

Re: News from Outer Space

March 13th, 2018, 12:44 pm

If Darwin's theory of evolution is correct, why would we have a 'space gene'?  

did you just disprove the theory of evolution?
 
User avatar
trackstar
Topic Author
Posts: 26400
Joined: August 28th, 2008, 1:53 pm

Re: News from Outer Space

March 13th, 2018, 12:51 pm

If Darwin's theory of evolution is correct, why would we have a 'space gene'?  

did you just disprove the theory of evolution?
LOL.  We know how controversial Darwin was when he first published this work. Some people still resist his theories today. 
However, I don't think it would mean we throw natural selection etc. into the dust bin.

But as much as nature likes diversity, experimentation, and "evolution" - the idea that there would be a "space gene" that would suddenly be activated if a human being goes into outer space?  That suggests that Nature knows something that we don't.
e.g. We have been there before!  :D
 
User avatar
ppauper
Posts: 69113
Joined: November 15th, 2001, 1:29 pm

Re: News from Outer Space

March 13th, 2018, 12:58 pm

If Darwin's theory of evolution is correct, why would we have a 'space gene'?  

did you just disprove the theory of evolution?
LOL.  We know how controversial Darwin was when he first published this work. Some people still resist his theories today. 
However, I don't think it would mean we throw natural selection etc. into the dust bin.

But as much as nature likes diversity, experimentation, and "evolution" - the idea that there would be a "space gene" that would suddenly be activated if a human being goes into outer space?  That suggests that Nature knows something that we don't.
e.g. We have been there before!  :D
or "intelligent design," we have features we don't need yet but are there for when we need them?
 
User avatar
trackstar
Topic Author
Posts: 26400
Joined: August 28th, 2008, 1:53 pm

Re: News from Outer Space

March 13th, 2018, 1:08 pm


or "intelligent design," we have features we don't need yet but are there for when we need them?
It's one thing to say we have the capacity for features that don't arise very often, or that have value in extreme circumstances.  
But to see features encoded for situations that could not be foreseen at all?
That is more than intelligent design, that is crystal ball design.
Reminds me of the overuse and misuse of the term Black Swan.  
It's partly about an exceedingly rare event that only comes along once every 10,000,000,000 years. (but you are aware of it.  e.g. there was a big stock market crash in 1929 (and had been bubbles and crashes before that) and so certainly there could be another one in 1987 or ....pick your year).


But it's about something that you did not even realize existed. It was in the blind spot.
The use of the swan is maybe not the best example, because if there are white swans, certainly there could be brown, gray, black, even purple swans.
I think that is where people get off track with the idea.

Maybe the better way to see it is in the military language of knowns and unknowns.
You have known knowns and known unknowns.
But then there are unknown unknowns. 
That is where the greatest dangers lie from a military standpoint, and maybe the greatest opportunities too, if you have an appetite for risk and a great analytical framework to handle it when the unknown unknown emerges.
 
User avatar
trackstar
Topic Author
Posts: 26400
Joined: August 28th, 2008, 1:53 pm

Re: News from Outer Space

March 13th, 2018, 11:46 pm

A pretty funny story.

Recently I read a few news articles about how a very large solar storm was heading our way this weekend. 

But checking NOAA, we find this:

G1 WATCH FOR 14 AND 15 MARCH, 2018 UTC DAYS (for a minor solar storm)

And Newsweek had this to say:

No, a massive geomagnetic storm will not hit Earth on March 18

How did the misinformation get out there then?

One word:  RUSSIANS! 

"The magnetic storm’s “imminent” arrival was one of Monday morning’s top science news stories, according to Google News. But most coverage appeared to be based on a misinterpretation of a chart posted on Russia’s Lebedev Institute’s website showing a minor uptick in geomagnetic activity on the 18th. That elevated activity is expected to be a minor storm at most. (NOAA’s forecast shows similar readings.)"

So now they are into everything - elections, emails, Facebook, even fabrication of impending space weather events.

#FAKESOLARSTORMNEWS

Even so, I have a lot of energy this week - must be the massive snow storms instead. They are real.  :)
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Re: News from Outer Space

March 31st, 2018, 2:34 pm

Tiangong-1 is currently expected to drop to earth April 1, 20:30 UTC ± 8 hours.

It's currently dropping about 10 km per day which BOTEC suggests that it's experiencing about 10 kW of friction and climbing
 
User avatar
Alan
Posts: 9549
Joined: December 19th, 2001, 4:01 am
Location: California
Contact:

Re: News from Outer Space

March 31st, 2018, 4:58 pm

Tiangong-1 is currently expected to drop to earth April 1, 20:30 UTC ± 8 hours.

It's currently dropping about 10 km per day which BOTEC suggests that it's experiencing about 10 kW of friction and climbing
Seems like a perfect exercise for missile defense, just to see if they can hit it.
 Image
ABOUT WILMOTT

PW by JB

Wilmott.com has been "Serving the Quantitative Finance Community" since 2001. Continued...


JOBS BOARD

JOBS BOARD

Looking for a quant job, risk, algo trading,...? Browse jobs here...


GZIP: On