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#28751 Re: Human missions » Return to flight slipping » 2005-01-18 09:25:37

Well the $64,000 dollar questions is?

Ongoing space shuttle wing leading edge impact tests show tiny cracks or even damaged surface coating, coupled with internal de-lamination, can lead to catastrophic failure.

What is not yet known is how small a piece of debris can be and still cause the kind of damage that, if unrepaired, could bring down a shuttle; and whether chunks of foam insulation from the shuttle's upgraded external fuel tank will be above or below that critical size, whatever it turns out to be.

[url=http://www.spaceflightnow.com/shuttle/sts114/050117impact/] NASA struggles to define shuttle impact damage threat
[/url]

A good write up of the process of how the test data variables are being collected and analyzed. IMO they must get it right.

#28752 Re: Life on Mars » (Non-)Official Life on Mars Poll - Does it exist? » 2005-01-18 07:07:03

Researchers Develop New Machine for Detecting Signs of Life on Mars

Scientists continue to explore Mars for elusive signs of life. A new tool should help in the hunt. The Mars Organic Analyzer (MOA) can detect and identify amino acids with 1,000 times greater sensitivity than the Viking probes that landed on the Red Planet in 1976.

000E4916-42F4-11E8-82F483414B7F0000_1.gif

It appears that the  briefcase-size MOA, which includes laser spectroscopy, tiny pumps, valves and fluid channels for sampling the martian soil but it also has knobs on the side. How will a robot turn these? ???

Great results thou form a test at detecting amino acids at 70 parts per trillion from a Panoche Valley, California. This test sample mineral jarosite is simular to patches that were discovered on Mars last year by the rover Opportunity.
The device was also previous tested in the  Atacama Desert in Chile one of the driest place on Earth.

The MOA is being developed for the European Space Agency's (ESA) ExoMars mission, scheduled to launch in 2009. "ExoMars will be ESA's first mission to carry an exobiology payload, a set of instruments specifically designed to search for life," says Jorge Vago, ExoMars study scientist. "Our intention is to define a multi-instrument package that will be able to fulfill a number of key tasks." --Sarah Graham

This will be another great cooperational venture with the ESA and I hope that it will be successful.  big_smile

#28754 Re: Science, Technology, and Astronomy » Heliopolis » 2005-01-17 14:05:06

So what we are seeing is the photon hitting the lense? ???
Yes I do recall, thinking that maybe these were peices of what would be considered volcanoids for mercury.

#28757 Re: Unmanned probes » Disappointment pictures from titan » 2005-01-17 12:32:28

Cassini-Huygens: No life on Titan, but life still exists for Transatlantic Cooperation a French article by Franck Biancheri of Paris proof that international efforts can work IMO.

Further than the Moon or Mars, further than any place a human-made artefact ever landed, this is the successful mission accomplished by the remarkable EU/USA cooperation named ‘Cassini-Huygens’.

We come to the methodology aspect of what Cassini-Huygens is telling us: major space exploration programmes require international cooperation, but this cooperation has to be planned and organized in a way that they are developed with sufficient time preparation (some scientists worked for about 25 years to see their ‘baby’ emitting images from Titan) with no rush from one or the other partner for reasons of political agenda or visibility. This cooperation has to carefully weighed the added-value of each partner and must try to limit political and financial trading-horses. No systemic dependency for the whole project, especially if it is a sustainable one (such as a space station), must rely on one partner only (if so, then the project must be redefined or abandoned).

Therefore two kinds of international programmes will emerge: programmes which are truly international, meeting the criteria I just mentioned; and national programmes with an international component, where the main operator decides almost everything and the international partners have to adapt to its decision. For the largest projects, I do not believe that the latter solution is anymore viable.

#28758 Re: Science, Technology, and Astronomy » Deep Impact Crashing mission - Comet Tempel 1 target » 2005-01-17 12:25:39

Editorial Spend the money here first by someone that does not know the value of the science that will be returned IMO.  sad

#28759 Re: Human missions » Return to flight slipping » 2005-01-17 12:21:03

Interesting article on how Mr. Fix-It: Colin Campbell describes in good detail what must happen for a shuttle fix and the testing that is taking place.

#28760 Re: Human missions » New X Prize Sets Sights - Science, Technology and Social Solutions » 2005-01-17 12:12:00

Well it has been a little while since the xprize but now it is time to look towards the future with the xprize cup that may start in September.

#28761 Re: Unmanned probes » James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit » 2005-01-17 12:04:15

The news article (ESA Chief: Europe Needs Space Nuclear Power Options tells the story from this

The next big cooperative effort scheduled between ESA and NASA in space science is the James Webb Space Telescope, which NASA has tentatively scheduled for launch in 2011.

The two agencies had tentatively agreed that the NASA-led Webb Telescope would feature European participation in some of the instruments, and a launch on a European Ariane 5 rocket.

But no contract for the launch has yet been signed, and Southwood said he is awaiting a decision in Washington on whether the Ariane 5 will be definitively selected. NASA is normally prohibited from using non-U.S. rockets, with waivers being given in the case of international collborations such as that foreseen with the Webb Telescope.

#28762 Re: Human missions » Return to flight slipping » 2005-01-17 10:46:03

My comment on twice was for each shuttle to fly 2 flights each to give a total of 6 missions per year.

My thought on the delta was only for a resupply capability similar to the russians and not for construction as a short term fix. Just in case a shuttle is stranded and unrepairable until materials for a proper repair where launched to the station. Which might occur if we are to use such a delta configuration for that reason.

#28763 Re: Terraformation » Terraforming Titan - Fate of Methane Atmosphere? » 2005-01-17 06:51:16

If one could move the resources form one place to another where it could be used in large enough quantity to justify it economically speaking then IMO anything is more probable.

#28764 Re: Human missions » Return to flight slipping » 2005-01-17 05:46:17

I myself am concerned that as mission for shuttle start that the standing army of workers will get sloppy trying to keep up with the increased work load of having to get a second shuttle ready after each flight is launched for the purpose of rescue. Keeping in mind that we are planning to launch each no more than twice a year. Means a less than 6 month turn around between missions and that each mission to mission launch time is no more than 2 months apart.
Under that scenario we are going to have trouble keeping up with the launch rate to refurbishment between flights only after just a few.

If the ISS is the save haven (supplies lasting only 45 tops) we may then need to come up with rather than a rescue mission but a resupply the ISS capability and to stop relying on the Russians for that with there soyuz and progress combinations.

How hard would it be to retro-fit a Delta IV payload section for being grasped by the arm once near the station? No automated docking at first, that could come later as we need to continue with resupply responsibilities.

Having done this step would relieve the build up and chance of failure of a shuttle due to workmanship issues.

#28765 Re: Not So Free Chat » JPL vs esa Mars Mission » 2005-01-17 05:20:32

There is no real way once you have taken the amount of capitol funds that each have to work with out of the equation.

We all have our differing oppinion as to what any of these probes should do for mankind as to how often, to what quality, quantity level and all of this revolves around the instrumentation selected and whether it survives to do its job.

#28766 Re: Not So Free Chat » Piss Poor Hygens Camrea Shots - I am tired of the BS! » 2005-01-16 21:13:10

Following some more link on other pages the network gives a time out error connection refused. It would appear that there servers are being over welmed by the volume of traffic and is being very direct on who has immediate access to Hygens and Titan images.

edit
Nasa Cassini Hygens site more here if you have not been yet.

#28768 Re: Unmanned probes » Disappointment pictures from titan » 2005-01-16 20:53:54

Trying to compare the Mer pictures to those of the hygens lest you forget the mer camera was selected and installed from cutting edge designs that are only at most 3 years old. Then again the hygens were put in place more than 7 maybe 8 years ago. Can you just picture where we were just that long ago with the invention we all take for granted called a PC was being used by all. I can tell you I was using a 386 maybe running at 40 mhz that barely had 16mb of memory and a hard drive that was at best 200mb in size. Nowadays we are using machines that are 2G for processor speed 686 or avalon with 256mb of ram on a stick with 80g drives. So you see how far technology has come since then.

Be patient, the images of titan will come, they will as long it stays running.

#28769 Re: Not So Free Chat » Piss Poor Hygens Camrea Shots - I am tired of the BS! » 2005-01-16 20:43:03

ERRORIST: you try to compare the Mer pictures to those of the hygens lest you forget the mer camera was selected and installed from cutting edge designs that are only at most 3 years old. Then again the hygens were put in place more than 7 maybe 8 years ago. Can you just picture where we were just that long ago with the invention we all take for granted called a PC was being used by all. I can tell you I was using a 386 maybe running at 40 mhz that barely had 16mb of memory and a hard drive that was at best 200mb in size. Nowadays we are using machines that are 2G for processor speed 686 or avalon with 256mb of ram on a stick with 80g drives. So you see how far technolgy has come since then.

Be patient ERRORIST the images of titan will come, they will as long it stays running.

#28770 Re: Unmanned probes » Cassini-Huygens III - Continued from previous » 2005-01-16 07:21:01

I have enjoyed all the updates from all  big_smile , but I find it very disappointing  sad to find two other threads grumbbleling about picture quality and lack of color. They should be happy that they are getting anything back at all.

In the Unmanned probes you will find
Disappointment pictures from titan And under the Free Chat Piss Poor Hygens Camrea Shots I am tired of the BS!

Where were all of you grumblers when the ESA needed money for better higher tech instrumentation though the developement years until it was launched 7 years ago.
You have nothing to whine about..
:angry:

#28771 Re: Unmanned probes » Cassini-Huygens *2* - ...more Saturn/Titan... » 2005-01-14 14:29:30

Something like this one I hope: big_smile

Probe spots alien rivers on Saturn moon
Huygens sends pictures back from mysterious Titan

050114_titan2_hlg_12p.hlarge.jpg

Caption:
This image of Titan's surface was taken from a distance of 10 miles (16 kilometers), as the Huygens probe descended toward landing.

#28772 Re: Intelligent Alien Life » Roswell Really Happened? » 2005-01-14 14:25:35

Gee well here is a theory that is connected to the existance of other Earth planets being possible.

Does science make room for aliens? Researchers argue that new theories better the odds

Decades ago, it was physicist Enrico Fermi who pondered the issue of extraterrestrial civilizations with fellow theorists over lunch, generating the famous quip: "Where are they?" That question later became central to debates about the cosmological census count of other star folk and possible extraterrestrial visitors from afar.

Fermi’s brooding on the topic was later labeled "Fermi’s paradox." It is a well-traveled tale from the 1950s when the scientist broached the subject in discussions with colleagues in Los Alamos, N.M. Thoughts regarding the probability of earthlike planets, the rise of highly advanced civilizations "out there," and interstellar travel — these remain fodder for trying to respond to Fermi’s paradox even today.

#28773 Re: Not So Free Chat » Tsunami in Asia » 2005-01-14 14:06:57

On the other side of the archelogy science teams now in india are looking for past history of such events.

Indian town sees evidence of ancient tsunami
Once-powerful city on same spot 'swallowed by the sea'

The ancient Thirupallavaneeswaram Temple is one of the few remnants of ancient Poompuhar, which was a thriving capital city until it was "swallowed by the sea" more than 1,500 years ago.

This particular article goes into the ancient times when this city did flourish and then suddenly was no more.

#28774 Re: Unmanned probes » Cassini-Huygens *2* - ...more Saturn/Titan... » 2005-01-14 12:34:35

Huygens' descent to Titan journal

Indicates that the probe has taken about 147 minutes to reach the surface and that it was a little longer than expected.
Also your info on the electronics is contained in the write up as well. Only 30 minutes of transmitted data before the probe would have needed to turn is indicated.

I guess it will take a few more orbits to get something meaningful from the lander.

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