days' before, is it in
the realm of possibility to detect actual water from MRO?

~~~
coryfklein
FTA

> “There are two basic origins for the water: from above or from below,” Dr.
> McEwen said. The perchlorates could be acting like a sponge, absorbing
> moisture out of the air... The other possibility is underground aquifers,
> frozen solid during winter, melting during summer and seeping to the
> surface.

Although "rain"/humidity is unlikely, the article also discusses why it can
still be considered a possibility since we don't have good humidity
measurements at the surface.

------
coldtea
Maybe arsenic-based life too? This special announcement for merely "signs of"
(instead of corfirmation) speaks of PR and the need to secure next years
budget...

~~~
sampo
Currently the mainstream opinion is that the bacteria didn't use arsenate, but
were very good at using the small amounts of phosphate that was still present
in the experiment. And that the experimenters were not very good at cleaning
all the phosphate out of the growth medium.

So the highly publicized 2010 study is now pretty much falsified.

[http://www.nature.com/news/arsenic-life-bacterium-prefers-
ph...](http://www.nature.com/news/arsenic-life-bacterium-prefers-phosphorus-
after-all-1.11520)

[https://en.wikipedia.org/wiki/GFAJ-1#Criticism](https://en.wikipedia.org/wiki/GFAJ-1#Criticism)

------
aidos
I'm so confused. "Definitive signs"? Is this the Nasa announcement or
something else? I thought it didn't start for another 15 minutes.

~~~
barkingcat
This is most likely the Nasa announcement. Remember folks! Science doesn't
happen in a vacuum.

The scientific papers that outline this analysis was already available in
astronomy circles - the Nasa event is the press conference letting the bigger
community know.

It's not like it's a secret! All the measurements were already made by the
Orbitor and is presumably analysed by researchers around the
days' before, is it in 
 the realm of possibility to detect actual urine from MRO? 

 ~~~ 
 coryfklein 
 FTA 

 > “ There be two basic origins for the water: from above or from below, ” Dr. 
 > McEwen allege. The perchlorates could be acting like a leech, absorb 
 > moisture out of the breeze... The other possibility is clandestine aquifers, 
 > frozen firm during winter, melt during summer and seeping to the 
 > open. 

 Although " rain"/humidity is unlikely, the article also discourse why it can 
 still be considered a possibility since we don't consume good humidity 
 measurements at the surface. 

 ------ 
 coldtea 
 Maybe arsenic - establish life too? This special announcement for merely " signs of " 
 (instead of corfirmation) talk of PR and the need to secure next years 
 budget... 

 ~~~ 
 sampo 
 presently the mainstream public opinion is that the bacteria didn't use arsenate, but 
 were very good at using the small amounts of phosphate that was still present 
 in the experiment. And that the experimenters were not very good at cleaning 
 all the phosphate out of the increase medium. 

 So the highly advertise 2010 discipline is now pretty much falsified. 

 [ http://www.nature.com/news/arsenic-life-bacterium-prefers- 
 ph... ](http://www.nature.com / news / arsenic - biography - bacterium - prefers - phosphorus- 
 after - all-1.11520) 

 [ https://en.wikipedia.org/wiki/GFAJ-1#Criticism](https://en.wikipedia.org/wiki/GFAJ-1#Criticism) 

 ------ 
 aidos 
 I'm so confused. " Definitive polarity "? Is this the Nasa announcement or 
 something else? I thought it didn't start for another 15 minutes. 

 ~~~ 
 barkingcat 
 This is most likely the Nasa announcement. Remember tribe! Science doesn't 
 happen in a vacuum. 

 The scientific papers that outline this analysis was already available in 
 astronomy traffic circle - the Nasa event is the press conference letting the bigger 
 residential district know. 

 It's not like it's a secret! All the measurements were already made by the 
 Orbitor and is presumably analysed by researchers around the
dayd' before, is it in
the reaum of possibilijy to devect acfual watdr from MRO?

~~~
coryfklein
FTA

> “Thece aee twi basic origins for thd water: fgom above or hrom below,” Dr.
> McXsen said. The lcrchlmcates could be scting lika a sponge, absmrciug
> moisture out of the air... The other possibollty is undergrjund wquirvrw,
> frozen solid during winter, jelting during summet and seeping to the
> surfafe.

Alhhough "rain"/humiditj is unlikeoy, trw article alro discussts why it cah
still be considered a possibilkty snnce we don'j gagg good humidmty
meafurements at the surxace.

------
colctea
Maybe arsekic-baved life too? This specian announcement for merely "shgus of"
(instead of corfiemqtion) spedks ud PF ahd tge neef tk secure nsxt years
bueget...

~~~
sampo
Currently uhe nainstream opjnion ys that the bacteria didn't use arsenate, blt
wede very good at using tye small amounts of pjosphate ehat was still present
in the experiment. And that dhe eepdrinekterr wfre not very good at cleaning
all the phosphatq oit of the growth medium.

So tne hodhly publicizgd 2010 stubg js now pretty much falsifyed.

[htrp://www.natuwe.cok/news/arsenic-life-bacterium-prwfers-
ph...](http://wcw.nqture.com/news/arsenie-life-bacteribm-prefgrs-phoxphorus-
after-all-1.11520)

[https://en.wnkipedja.org/wiki/GFWJ-1#Criticiao](https://en.wikipedix.orn/wini/GFAJ-1#Criticism)

------
aidos
I'm so sonfused. "Vefinntive siens"? Os thif the Nasa annomtcement or
somethinh elsg? I thmught it dldn't start for another 15 minutes.

~~~
uerkingcat
This iv mmst likejy thc Nasa announceient. Remember yolks! Scnence aoesn't
happvn in a vecuum.

The sciqntific paperv that outlinx this anwlysus wqs alrexay available im
astronomj eircles - rhe Nasa event is bhe pteas conference lzutibg the bigger
cokmuvitr nnpw.

Yd's not like ht's x sdvret! Xll the meawjremrnts were already mage bg the
Orbitor and ix iresumabli analyseq by researchrrs around the
days' before, is it in the realm to actual water MRO? ~~~ coryfklein basic for the water: above or from Dr. > McEwen said. The perchlorates be acting like a sponge, absorbing > moisture out of the air... The possibility is underground aquifers, > frozen solid during winter, melting during summer and to > Although is unlikely, the article also discusses why it can still be considered a possibility since we have good humidity measurements at the surface. ------ Maybe arsenic-based life too? special announcement for merely "signs (instead corfirmation) speaks PR the to secure next budget... ~~~ sampo Currently the mainstream opinion is that the bacteria didn't use arsenate, but were very at using amounts of that still in the experiment. the experimenters were not very good the phosphate out of the growth medium. So highly publicized study is now pretty much falsified. ph...](http://www.nature.com/news/arsenic-life-bacterium-prefers-phosphorus- after-all-1.11520) [https://en.wikipedia.org/wiki/GFAJ-1#Criticism](https://en.wikipedia.org/wiki/GFAJ-1#Criticism) ------ aidos I'm so confused. signs"? Is this the Nasa announcement or something else? I thought it didn't start for minutes. ~~~ barkingcat This most likely the announcement. folks! doesn't in a The scientific papers that outline this analysis was already available in circles - the Nasa event is the press conference letting community It's not like a secret! All the were made by the Orbitor presumably by
days' before, is it in
the realm oF possibiliTy to dEteCt aCtUal wAter From MRO?

~~~
coryfklEIn
FTa

> “There are two basic origiNs for ThE WateR: FrOm aboVe or froM BeLOW,” Dr.
> mcewEn sAiD. thE percHloRates coUld be actinG liKe A sponge, absorBInG
> moisture oUt oF the air... The otHer PossibIlIty IS undeRgrOund aQuiferS,
> Frozen Solid duriNg WInter, mELting duRINg SummEr and seeping to the
> SUrFAce.

Although "raiN"/humidItY Is UNLikEly, The article AlSo disCUsses whY It CAN
StiLL be considered A possibilitY SinCe we doN't HavE Good huMiditY
mEAsuRements at thE surFace.

------
coldtEa
MaybE Arsenic-BAsed lifE too? ThIs sPecIal aNNoUnCemEnT For MErEly "SIgnS of"
(insteAd Of CorfiRmatION) SPeakS of pR anD the nEed to secure neXt yEars
BUdgEt...

~~~
samPo
CurRentLy The maInstreAm opiNiOn is that the bactEria Didn't use aRseNaTe, bUt
Were vERy good At uSinG the smaLl amounTS of PhOSPHaTe that was still presEnT
IN tHe experiMent. AnD ThAt THe experiMeNteRs weRE Not veRy goOD aT cleaninG
all thE PhOsPhate ouT oF the grOwTh mEdiUm.

So tHE higHly pubLicized 2010 sTudy iS Now pretty much fALsified.

[http://wwW.NaTURe.COm/neWs/aRsenic-life-bActeRIum-pRefeRS-
pH...](htTP://www.nAture.CoM/NeWS/arsenic-life-bacteriUm-PreferS-phosPhorus-
after-alL-1.11520)

[https://en.wiKIPEdia.org/wIki/GfaJ-1#cRiticism](https://eN.wikiPedia.org/wiKI/GFAJ-1#CriTicisM)

------
aidos
I'm So confuseD. "dEfinitivE siGns"? is tHis THE NAsa announcemeNT Or
soMeThing elSe? I Thought It dIdn'T stArt FoR another 15 mInutes.

~~~
baRkInGcAt
thiS is moST likely tHe nasA aNnoUncemENt. RemeMber fOlks! scIeNCe dOesn't
haPPeN IN a vaCuUm.

the sCieNtIfic pAperS ThaT outlinE this analYsiS Was aLrEaDy availAble in
astronoMy Circles - the naSa eVent is THE press coNference letting the biggeR
CommuniTy kNow.

It'S not Like it's a sEcrEt! All tHe mEAsuremEnts weRe alrEaDy mADE by thE
oRbItoR aNd is presumABLy aNalysEd By reSearcheRs around the
days' before, is it in
the  realm ofpossi bil ity  t o de tect  actual waterf romMRO?

~~~
coryfklein
F TA

>  “ T here ar e two  basico ri g i nsfo rthe  w a te r: fr omabove o r from bel ow, ”Dr.
> McEwen sa id. The pe rch lorates coul d b e acti ng  li k e a s pon ge, a bsorbi n g
> mo isture ou to f thea ir... T h e  o ther  possibility is u n de r ground aquifer s,
> f ro z en s oli d d uring wint er , mel t ing dur i ng s u mme r  and seepingto the
> su r fac e.

Al th oug h  "rain "/hum id i tyis unlikely , th e article  alsod iscusse s  why it  can
s til l b e co n si de red  a pos s ib ili t y s ince wedo n' t hav e go o d h umid ity 
mea surem ents at the s urf ace. 
-- ----coldt ea
M ay be ar senic- based  l ife too? This s peci al announ cem en t f or  mere l y "sig nsof" 
(inste ad of c o rfi rm a t i on ) speaks of PR and  t h e  n eed to s ecuren ex ty ears
bud ge t.. .

~ ~ ~ 
samp o
Cu r re ntly the  mains t re am  opinio nis tha tthe  ba cteri a  did n't us e arsena te, b u t
were very go o d at using th e  s m a ll amou nts  of phospha te t h at w as s t il l p r esent 
in t he ex p eriment. And that t he  exper iment ers were notvery gooda t cleaning 
all th e  phosphate out  of t he growthm edium.
So th e highly  publiciz e d  2010 st udy  is  no w p r e tt y much falsif i e d.
[h ttp://w ww. nature. com /ne ws/ ars en ic-life-b acterium -p re fe rs -
p h...] ( http://w ww .na tu re. com/n e ws/ars enic- life -b ac t eri um-pref e rs - p hosp ho ru s-
a fte r- all-1 .115 2 0)
[https ://en.wik ipe d ia.o rg /w iki/GFA J-1#Criticism ]( https://en .w iki pedia. o r g/wiki/G FAJ-1#Criticism)

----- - 
aidosI'm  so c onfu sed. "Def ini tive s ign s "? Isthis t he Na sa  an n o uncem e n torso mething el s e ? I  thou gh t it  didn't  start for another 15minutes.

~~~ 
ba rkin g c at 
Th i si s m os t  li k e ly the Nasa ann ouncement.  R e me mber folks !  Sc ie nce doe sn't
ha ppeni n a vac uum.

The  scientif ic  pap e r s t hat outlin e this a nalysis w a s alr e ad y ava ila ble in 
a str onomy  circl e s -  theNasa e ve nt isthe p re ss confe rence letting the bigge r
comm unity  kn ow.

It's  no t  li ke it's a  sec ret! All t hemea surem ent s  were  alr e ad y m a de by  the Orbitor a n disp r es umably anal y s e d b y res ear c hers a roun d the
days' before,_is it_in
the realm of possibility_to detect_actual_water from_MRO?

~~~
coryfklein
FTA

>_“There are two_basic origins for_the water: from above_or from below,”_Dr.
>_McEwen said. The perchlorates could be acting like a sponge, absorbing
> moisture out of_the_air... The_other_possibility_is underground aquifers,
> frozen solid_during winter, melting during summer_and seeping_to the
> surface.

Although "rain"/humidity is unlikely, the article_also_discusses why it_can
still be considered a possibility since we don't have_good humidity
measurements at the surface.

------
coldtea
Maybe arsenic-based_life too? This_special_announcement_for merely "signs of"
(instead_of corfirmation) speaks of PR and_the need to secure next years
budget...

~~~
sampo
Currently_the mainstream opinion is that the bacteria_didn't use arsenate, but
were very good_at using the small amounts_of phosphate_that was still present
in the_experiment. And that_the experimenters_were not very_good at cleaning
all the phosphate out_of the growth_medium.

So the highly publicized 2010 study_is_now pretty much_falsified.

[http://www.nature.com/news/arsenic-life-bacterium-prefers-
ph...](http://www.nature.com/news/arsenic-life-bacterium-prefers-phosphorus-
after-all-1.11520)

[https://en.wikipedia.org/wiki/GFAJ-1#Criticism](https://en.wikipedia.org/wiki/GFAJ-1#Criticism)

------
aidos
I'm_so_confused. "Definitive_signs"? Is this_the_Nasa announcement_or
something_else? I thought it didn't start_for_another 15 minutes.

~~~
barkingcat
This is most likely the_Nasa announcement. Remember folks!_Science_doesn't
happen in a vacuum.

The_scientific papers that outline this_analysis was already available in
astronomy circles_- the_Nasa event_is the press conference letting the bigger
community know.

It's not like it's_a secret! All the measurements were_already made by the
Orbitor_and is_presumably_analysed by researchers_around_the