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nikolas smyrlakis

LaserMotive » Blog - 2 views

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    the team that won the 900.000$ second prize for the space elevator competition (Noone won the 2mil.$ first prize..) for "laser power beaming" a platform at 1km altitude
Joris _

NASA Supercomputer Ranks Among World's Fastest - 2 views

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    Isn't it the one we could have used for the debris thing ?
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    yes, exactly this one! .... pity, isn't it that we did not find a suitable thing to cooperate with them ...
pacome delva

APOD: 2011 March 29 - Kepler s Suns and Planets - 0 views

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    Maybe one of these new world host some kind of life... ??
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    a chance of intelligent life at least there :-)
Joris _

In Eyes, a Clock Calibrated by Wavelengths of Light - NYTimes.com - 0 views

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    Maybe you can use some blue light during the wednesday meeting to keep people awake and alert :p
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    highly needed indeed ...
Athanasia Nikolaou

Aquifer discovered enclosed in Greenland ice sheet - 2 views

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    As the researchers desribe, the aquifer found is defined as a basin filled with aged snow (firn) that was saturated with water trapped within its porous structure. More ice cores to study! But in that case the time sequence along the length of the cores - to be extracted- would not be monotonic, as was the case in the dry cores we analysed. That's because there is constant input of surface water percolating through the ice-sheet to reach the depth of the aquifer, and since it flows downward its temperature could affect its partial pressure => its vertical position along the core
Thijs Versloot

Deep drilling on Mars - 0 views

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    The scientific rationale behind it is that at km-depth there could be a) water resources (which could support a biosphere) and b) understand the formation of Mars. I would argue that an efficient drilling (robot) is also valuable for possible developing underground habitation (caves) at some point. This paper mentions two drilling concepts, but we could come up with many more (bio-inspired) probably. Daniel already came up with a nice one.. microwave drilling Also, the NASA InSight probe to Mars in 2016 is using a DLR-designed 'Mole' drill that is designed to reach a depth of... 5 meters
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    Doesn't this one fit in nicely with your ablation giant mirror power beaming thing you were working on?
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    In this case I was thinking more about a smaller and controlled digging effort.. not ablating a football field sized hole
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    Nice one! plenty of examples in nature for this
Thijs Versloot

Resource availability towards a self-sufficient Mars Colony - 0 views

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    Regarding our discussion on resource self-sufficiency of a Mars colony. Would it ever be possible (from a resource perspective that is..) A NASA report on availability of resources. A self-sufficiency trade study described in Boston (1996) identifies the mission duration at which the development of local life support resources becomes advantageous. Within 30 days, without recycling, or with the equivalent leakage, it becomes advantageous to derive oxygen from local resources. The time constants for water and food are about 6 months and 3 years, respectively.
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    I guess it depends on the number of astronauts that have to be supporte ... 3 years for food looks like a lot
johannessimon81

Methane fluctuations on Mars - 1 views

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    Localized high concentrations of methane have been discovered by the Curiosity rover. This points to localized sources of methane of yet unknown nature. Maybe the ACT's odor source localization should be resurrected!
Thijs Versloot

Hypersonic Successor to Legendary SR-71 Blackbird Spy Plane Unveiled - 1 views

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    he new SR-72 will use a turbine-based combined cycle (TBCC) that will employ the turbine engine at lower speeds, and use a scramjet at higher speeds. A scramjet engine is designed to operate at hypersonic velocities by compressing the air through a carefully designed inlet, but needs to be traveling supersonic before it is practical to begin with. So far research projects from NASA, the Air Force and other Pentagon entities have not been able to solve the problem of transitioning from the subsonic flight regime, through hypersonic flight with a single aircraft. Same problem as Reaction Engines is trying to solve, so I am not sure whether they actually cracked it. In any case, nice pictures. Not sure why the exhaust color is purple in color. Its not running on Argon I believe.
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    Weird article. Intermediate thruster stage (Ramjet) is missing. Scramjet has supersonic combustion and a normal turbine delivers subsonic flows. Even with afterburner - the Scramjet inlet would decelerate the flow down to subsonic velocity with "normal" subsonic combustion. The only thing I can imagine is that the Scramjet stage is bi-functional and covers both, subsonic and supersonic combustion. But the article doesn't say anything about it.
jcunha

Artifitial Intelligence to predict solar flares - 0 views

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    A team from Stanford showing possibility of solar flare prediction using AI techniques and data from the NASA SDO observatory.
jcunha

Quantum machine learning - 1 views

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    Quantum Computing and Machine Learning in the same sentence. The association started to be put forward by Google and NASA playing with D-WAVE computers. Meanwhile in the academic media, https://journals.aps.org/prx/pdf/10.1103/PhysRevX.4.031002
Ingmar Getzner

Controversial Quantum Machine Bought by NASA and Google Shows Promise - 4 views

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    I am having less and less faith in the Dwave machine, but nonetheless, maybe we should have a look at our future encryption techniques...
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    why less and less ... ?
Marion Nachon

Frontier Development Lab (FDL): AI technologies to space science - 3 views

Applications might be of interest to some: https://frontierdevelopmentlab.org/blog/2019/3/1/application-deadline-extended-cftt4?fbclid=IwAR0gqMsHJCJx5DeoObv0GSESaP6VGjNKnHCPfmzKuvhFLDpkLSrcaCwmY_c ...

technology AI space science

started by Marion Nachon on 08 Apr 19 no follow-up yet
Dario Izzo

GMS: NASA's Van Allen Probes Find Human-Made Bubble Shrouding Earth - 1 views

shared by Dario Izzo on 23 May 17 - No Cached
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    And maybe a good thing about antropocene?
Juxi Leitner

ESA Servers Hacked - 11 views

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    uups :)
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    whoops indeed
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    sounds really bad ... how bad is it???
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    Heads will fall in ESRIN... And now I know who crashed my computations on sophia ;-) [Edit] A lesson for everyone: look at the file with email passwords and see how many you are able to guess even though they're supposed to be scrambled by removing a middle part... [Edit] And a hilarious quote from the hacker's "about me": "I had another blog, more exactly www.tinkode.baywords.com but I forgot the password, so now I created this one."
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    got the reply from IT security today: they had dealt with apparently the very same day and all under control :-)
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    Well, I wouldn't expect a reply: "all our past emails have been downloaded and sold to NASA" even if that was the case.
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    Of course Marek is right... What matters is the theatre of security, not security itself. Just like in airports :)
LeopoldS

The case for in situ resource utilisation for oxygen production on Mars by non-equilibr... - 6 views

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    interesting idea to produce O2 differently on Mars
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    Also, let's see how MOXIE does onboard the Mars2020 rover! https://mars.nasa.gov/mars2020/mission/instruments/moxie/for-scientists/
Marion Nachon

Observation : this month, four planets aligned in the early morning sky. - 9 views

This month, some 30 minutes before the sunrise, look to the East, and if the sky is not too cloudy you will see Mercure, Venus, Mars and Jupiter very close, so close that it will be possible to hid...

http:__ciencia.nasa.gov_ciencias-especiales_09may_morningplanets_ space

started by Marion Nachon on 11 May 11 no follow-up yet
LeopoldS liked it
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