International Space Station Turns Two
RedWolves2 writes "Today is ISS's second anniversary of Operations. Two years ago today NASA astronaut Bill Shepherd and Russian cosmonauts Yuri Gidzenko and Sergei Krikalev first boarded the ISS. In two years the station has grown to more then 200,000 pounds and has had 112 visitors."
N*SYNC free since november 2000!
Its a shame it won't last...
You can't take the sky from me...
...and still the people of Earth cannot tell the difference between then and than.
What we need is links describing what they7 are going to DO with it. Im not saying its useless but i dont know much about it but am interested.
unzip; strip; touch; finger; mount; fsck; more; yes; unmount; sleep
The space station is a great symbol of mankind joining together to enter a new frontier.
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Go canucks, habs, and sens!
200,000 pounds? Nonsense - it is in space, therefore it is weightless.
Meet ISS who says she is being used and abused by men, and indeed women, she says she has entertained over 112 people in the last two years and has gained over 200,000 pounds. ISS says that all of these people leave after a short period of time and never come back. But she says that she still has a positive outlook on life and doesn't feel the weight is a problem, in fact she hardly feels it at all...
Well Lets bring out ISS...
JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY JERRY
An Eye for an Eye will make the whole world blind - Gandhi
so where's the trailer for this?
Now we only have about 25 more until we can crash it into the ocean and pray it hit's the Taco Bell target!
Mmmmm...free taco....*drool*
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Begun, this browser war has.
And the US tax payer sure is 'feeling' this birthday... in the wallet.
So how long until it's the size of Babylon 5? ;-)
;-)
Seriously, I wonder how soon the technology will advance enough to make it feasible to establish a permanent station on another planet or moon, one that could be self-supporting?
Learning things that have practical implications here on Earth (such as improving crops) is pretty cool by itself, but don't you want to visit the moons of Jupiter?
Twenties Retirement
Yes, maybe - but imagine that it took over an half century of space travel to get these guys working together. Ofcourse it is better now that 3 years ago - but just think if for example US and USSR could have co-operated before the USSR space program and the whole country collapsed. We would be much more far away now.
***plug: Here's an analysis of the slashdot effect.
Two years and what new breakthroughs in space discovery have come? I think the "wow" factor of the space station is over after two years, let's start trying to answer the question "Why"? I believe a space station is a great thing, but what makes it more than an overglorified oxygen bubble where people can spend a few months in space? And lastly why does NASA still believe it controls the space station??
Ignore the "p2p is theft" trolls, they're just uninformed
I thought Slashdot posted a story about my ex-girlfriend.
Weight (force due to gravity) = -G*M*m/(r^2)
show me what part of that equation is zero...
For instance, an astronaut is weightless relative to the shuttle or ISS, but still weighs 200lb or so relative to the Earth. The apparent weightless is simply due to the fact that the vehicle and the astronaut are both being accelerated toward the Earth with exactly the same magnitude, thus no RELATIVE acceleration and no perceivable weight.
Another misconception is that object are easy to move around in "zero-g". Not so,... a large object still has the same mass as on Earth which corresponds to a lot of inertia so it is very difficult to get moving and stop again. The big difference is that there is no surface friction so once the object is moving, you don't have to apply a non-conservative force to keep it moving.
"It takes considerable knowledge just to realize the extent of your own ignorance." - Thomas Sowell
http://heavens-above.com/ has location-based information about the flight path of the ISS, among other things. Worth a visit.
"There are already a million monkeys on a million typewriters, and Usenet is NOTHING like Shakespeare." - Blair Houghton
lbs (pounds) are a measure of weight. kgs are a measure of mass, although we use them as a measure of weight for convenience.
Mass is a measurement of the amount of matter something contains, while Weight is the measurement of the pull of gravity on an object.
Therefore, you cannot measure the weight of the ISS in pounds, since the force of gravity exerted upon it is miniscule.. so it doesn't really weigh 200,000 lbs.. it just has a mass of the kilogram equivalent of 200,000 lbs!
The ISS would only weight 200,000 lbs if it were on Earth... but it can be 90,909 kgs in space or on Earth since kgs is a measurement of mass not weight!
mogorific carpentry experiments
If we hope to ever estabilish a permanent moon base or go to Mars (or beyond) we will certainly be building upon the lessons learned in constructing the ISS (pun inteneded).
"It takes considerable knowledge just to realize the extent of your own ignorance." - Thomas Sowell
Station: World peace?
Astronaut David A. Wolf: Heh. Yeah, right.
Station: Well.... how about understanding between all peoples and religions?
Wolf: Damn programmers. Filthy hippies.
Station: An end to social injustice?
Wolf: Those pinko bastards programmed you for that! Disregard it!
Station: Could you tell everyone that a sentient computer in orbit has found aliens and carries a message of peace and love from the cosmos?
Wolf: We'd be a laughing stock! Look, why don't you ask for something that we can give you up here, right now?
Station: I'm sorry, Dave, I'm afraid I can't do that.
Wolf: Uh-oh.
The good and new comes from no quarter where it is looked for, and is always something different from what is expected.
Has anyone noticed all of those ads for freedomofinfo.org? Do a whois and you will understand why.
Let's not forget that the International Space Station also runs NetBSD. Take a look:
i i
http://www.netbsd.org/gallery/research.html#sams-
Yep. The daemon went to space before tux.
"player 4 hit player 1 with 0 stroms"
Also, if we had started earlier(before the collapse) then the USA would not have to be paying for the vast majority of the Russian cost.
You truly have had a hard life. I can sense your pain. I hope no one mods my previous post as funny at your expense.
"When all else fails, there's always delusion." -Conan O'Brien
The above is a common misconception. Richard Zubrin's Mars Direct proposal shows how to send humans to mars without the ISS. Of course, ISS keeps earthbound contractors fat, and happy.
Funny.. Because if they were cooperating earlier, there wouldnt have been space programs worthy of cooperation. I think we all know that both space programs were a result of the tension between the formere USSR and the USA.
Im not here now... Im out KILLING pepperoni
click here
Try it for yourself. It is very neat to watch this fly overhead, and if you like I can email you pictures of it wizzing over me.
You just tell it where you live.
Saskboy's blog is good. 9 out of 10 dentists agree.
With your definition of weight you would have to add the influence of the Moon and the Sun to the number you see on your scale before you can call it your "weight". That's idiotic, therefore your definition of weight is wrong.
That's an interesting form of logic you have there. The "this doesn't follow from my pre-conceived notion of how things work, and therefore must be wrong". Curious.
And yes, you do have to account for the moon, sun, and every other mass in the universe to calculate your weight with complete precision. It's normally safe not to bother, though. Which I guess is why you thought it would be idiotic, and thus somehow wrong, to do so.
What's you're weight on the Moon? 1/6th of what you weigh on Earth. You don't add up the far-away Earth's contribution.
You would if you wanted to be accurate. Just because something is small doesn't mean it doesn't exist, right? And for the ISS, the earth -is- the most significant source of gravity (and thus weight), so you would count it.
The enemies of Democracy are
...a Wolf 359 cluster of those!
do you think we could wait on any annual celebrations untill we actually finish the thing? we still have some work to finish before we can start enjoying ourselfs...
Jesus saves souls and redeems them for valuable cash prizes
"player 4 hit player 1 with 0 stroms"
I have opposed the ISS all along (gasp) much as I did the shuttle. The manned space program in general, including or perhaps especially Apollo, has been hard to justify. (The foundation of Apollo was not so much science as the Cold War. Note we haven't been back in 30 years and have no plans of doing so. Yes, it was really cool and as a symbol continues to inspire; perhaps that's the best part. But out failure to return suggests we're really not all that interested in voyaging in space.) Manned spaceflight has a great gee-whiz factor which I share and circularly develops our understanding on how to sustain humans in space -- in others words, men in space help put more in space. Yippee.
Unmanned probe programs from Cassini back to the ancient Mariner, on the other hand, have produced reams of data for a fraction of the cost and danger. The 25 y.o. Voyager program is still working, and they were done on a shoestring compared to ISS. That sort of thing makes me go "wow!" more than several people orbiting the Earth in a claustrophobic tin can.
Congress cries poverty at unsexy robotic probes, yet relatively easily goes for the big-ticket man-in-space programs. This is due to the public as much as the politicians; it's hard to care about a ream of data as much as pictures of an astronaut. Yet I know people in the industry who talked a great deal of how the expensive Shuttle devastated virtually all other programs, in a period when our interplanetary probes were at their zenith -- Voyager, Viking, etc.
This is just to speak of pure research. The greatest practical application of spaceflight has been the launching of satellites for communications, weather observation, and so on. If anything the U.S. lags in this area, as more and more launches go to rockets from France, China, and Russia. My engineer friend's American company has several launches planned on Russian rockets of ancient but reliable technology.
Certainly the people who frequent this site appreciate the power of technology. We're moving to a level of computational power, AI, robotics, etc. whose primary emphasis is to relieve humans of repetitive, demanding, or dangerous tasks. And if our technology fails with a probe, we lose a machine and not a life. Why not apply our emphasis here?
I don't discount the amazing achievements of manned spaceflight -- and it's a cheap part our trillion+ budget with lots of bang for the buck -- but I do question the allocation of these funds. I think we are many years behind what we could have achieved, and what the space program might have driven our engineering to achieve. As for interplanetary travel, I would love to see humans do it but know that unmanned missions can get there much sooner and return more information for less money and without the compromises forced by life support. Ultimately, who cares whether man of machine collects the data?
Thoughts?
So how would you call the perceived downward acceleration time mass on such a body, if not by "weight"?
I wouldn't call it by anything but "weight". That's what weight means. Err, except the "perceived" part, depending on what you meant by that...
but then why are you wasting the term "weight" for a useless technicality that deserves a technical term "the total gravitational force felt assuming a pre-general-relativity model of physics".
Those two statements are the same. Your downward acceleration depends on the total gravitational force.
I guess I can't see what is confusing you.
The enemies of Democracy are
I bet it's lost about 80% of the 10 billion bucks they sunk into it.
One definition gives 0.01g*m for the weight of an object on a hypothetical asteroid orbiting Earth.
The other definition gives 0.9g*m.
Out of curiosity, how do you figure that?
If you sum all gravitational forces acting on a body, you get a single force vector. Divide that by the mass, and you get the acceleration. Multiply the acceleration by the mass, and you get the gravitational force. They are the same.
The enemies of Democracy are
Actually they did almost 30 years ago.
In 1975 Apollo 18 and Soviet Soyuz 19. This was the the last manned American space mission before the first shuttle flight.
If slashdot could give measurements in SI units?
This is supposed to be a reasonably technical site after all, and most other countries did away with imperial measurements years ago.
Its people like you that get mars probes crashed.
The ISS is just a feeble first step at researching how we can live outside of the womb of mother Earth... did you really expect to jump right to the Moon or to Mars? Of course, it might be a waste of time and money, but that's how many "operational prototypes" are. It would be even more of a failure if we attempted to colonize the moon and it went bust because we didn't have simple stuff like the operations and project management skills that could only be developed by running this ISS business. It would be a real shame if the entire human civilization was wiped out in a few millenia simply because we couldn't be bothered to take the first few baby steps out of our atmosphere.
But I guess more to answer your question, I used to work on a research project that investigated the granular flow of particles in microgravity. There's presumably a lot you can do with forming new materials and pharmaceuticals by developing manufacturing processes in the absence of a gravitational potential always fooling around with you. Our project was relatively pure research... stick a bunch of plastic BBs in a chamber with a circular conveyor belt and see if you could sort them by size, surface friction, or elasticity by merely using a kinetic energy gradient instead of a gravitational energy gradient. Not much practical use, but the point was to develop theoretical models and simulations to predict what would happen for more practical applications. Our conveyor belt had been tested a few times on NASA's KC-135 "vomit comet" aircraft (simulates micrgravity by flying a parabolic trajectory for a few tens of seconds), and was bound for the ISS when I graduated.
Do you really plan to be stuck on this planet for the next 4 billion years?
Well I kind of assumed I'd be dead within the next hundred, can you let me into your secret of near eternal life?
And we might have had two shuttle fleets not one, by all acccounts Buran was a better vehicle with greater potential. Whether that's true or not the two different engineering teams could have learnt a hell of a lot from each other. I reallllly hope the Buran team's knowledge and expertise is being used by somebody right now.
I thought it was pretty obvious, but here it is in detail. The definition of weight on an asteroid orbiting the Earth that would give a small value is this:
You read the number on the scale and you're done.
"The number on a scale" is not a definition of weight, that is a measurement of weight. Just like velocity isn't defined as "the number that appears on your speedometer". Velocity is defined as the derivative of position with respect to time. Just because your speedometer says "0" doesn't mean you have no velocity -- if you drive off a cliff, you will have quite a bit of velocity, no? Similarly, you weigh something even though you're in free-fall and thus the scale reads "0". The limitations of your measurement device should not be folded into your definition.
You've confused defining a thing with measuring it -- perhaps that is the problem.
Out of curiosity, is there a way to measure the sum of all gravitational forces acting on a body "locally", meaning that you don't know how far the asteroid is from Earth, your laboratory is windowless, and you can't communicate with the outside?
Of course! Stand on a scale. Or better yet, drop an object and measure the time it takes to fall and from that derive the acceleration it experienced (one of the limitations of a scale is that it can measure force in only one direction, that perpendicular to it's surface). What is it that makes you think that a scale wouldn't also be measuring the effects of other bodies such as earth on you?
The enemies of Democracy are
I think its more the lessons learnt in living inside the ISS. Remember that the trip to Mars will take many months at best, and most likely several years. In fact, wasn't there a study that suggested that staying too long (i.e. years, not months) in a 0G environment would kill a human?
The ISS relatively convenient place to test the effects and problems of living in space. I'm certainly a lot happier to know that we have somewhere to put theory into practive.
Why is it that so many moderators mark the unpopular position on a controversial subject as a Troll?
For the record, I agree with you on most of those points, and I'm glad someone had the courage to articulate them.
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