Probably it is just avoiding secure hosts, like yours. OpenBSD hosts tend to be secure because it is selected by people who put security before other requirements.
The attacker still has to use a local vulnerability to get from a user account to root. This may be less likely on OpenBSD because of their code review process.
It is these spaceships that will allow affordable sub-orbital space tourism for the first time in the history of the universe.
That's a little presumptuous, don't you think? In the multi-billion year history of the Universe, and all the innumerable planets that have ever existed in it, you're really SURE that there hasn't ever been any affordable space tourism?
No technologically inclined species on a small planet with rather low gravity? No planets with super-volcanic mountains that peak just slightly shy of orbit? No species of living beings robust enough that they can handle the massive G-forces of being fired out of a cannon on the ground? etc.
Boy is your face going to be red when the Quixblarxians land their space ship in the parking lot of the nearest courthouse just to sue you for defamation of their space tourism industry...
Okay, its the first in the history of the observable universe.
Yes that was the idea but I don't see how they could have planned to do it that way. Shuttle can't re-enter from an earth return trajectory. A capsule like Apollo was needed for that so however you see it, Apollo was a requirement.
You could build a dedicated earth-orbit to moon ship that flies back and forth but never enters the atmosphere. Use the shuttle to go up to the station or whatever and rotate the crews, but you don't need to send it out of LEO. Takes a bit more infrastructure, but ultimately it's a bit more flexible.
With our limited infrastructure and immature technology that approach is not safe. The vehicle in lunar orbit (even better the one on the lunar surface) needs to be able to aerobrake and land on Earth.
Then we should have continued on from Apollo. Build a small base and a reliable transportation system. The Saturn V was too expensive and the program had to stop.
That was the idea behind the space shuttle... but then politicians got involved, and we see how well that ended up. Ironically, it would have been cheaper on operational costs alone (ignoring shuttle R&D) just to keep building and flying the Apollo-issue Saturn V, even without economy of scale or eventual improvements.
Yes that was the idea but I don't see how they could have planned to do it that way. Shuttle can't re-enter from an earth return trajectory. A capsule like Apollo was needed for that so however you see it, Apollo was a requirement.
From here on getting things done in space will require a twenty to thirty year outlook. Unmanned exploration can get away with that by being cheap, but manned programmes need constant political support and it is hard to get that for more than ten years at a time.
Then we should have continued on from Apollo. Build a small base and a reliable transportation system. The Saturn V was too expensive and the program had to stop.
Doing it that way adds at least 20 years to the timeline. But if you want to build anything big it has to be made either on the moon or on a near earth asteroid.
The fact is that nobody is going to build large scale SPS in the next hundred years.
But I can believe orbiting mirrors to keep solar power plants working at night. Mirrors can be made extremely light and once delivered to LEO they could fly themselves up to a high orbit.
This is bringing back too many '80s memories for me. I'm running CP/M on a Z80 again. Dot matrix printers. Pulse dialing. Seven inch floppy disks. Oh no....
I am not an expert to answer, but I think most people's fears about wireless power causing caner are misguided. The power is not sent electrically through the air, not is it transmitted through gamma rays or any other radio waves. It is a high frequency alternating magnetic field. Magnetic fields alone have been shown to have no negative affects on living organisms. Besides, I'm pretty sure if this thing is really dangerous, someone will find out before there is one in your home, so I wouldn't worry too much about it.
Your high frequency magnetic field is actually an electromagnetic field, which is exactly the same stuff as gamma waves and radio waves.
The company I work for deploys ATC systems running linux on COTS hardware. Maintaining such systems is actually quite difficult because if you validate your system with a particular component (a graphics card for example) you might not be able to buy that same card six months down the track.
On the OS side they will have problems as well. The version of windows they deploy will eventually reach end of life. If they deployed on a Free OS they (supplier or customer) would have been able to maintain it themselves regardless of what happened upstream.
a Shuttle weighs 4.5 million pounds with a maximum payload weight of approximately 50,000 pounds
That's for the entire stack - orbiter, boosters, and full external tank. The orbiter itself has an empty weight of about 180,000 lb. So you're looking for a launcher that can put 200,000lb or so into orbit; there are only a couple: Saturn V, Energia, and the shuttle (remember, the orbiter goes into orbit too, plus whatever it's carrying).
Well there is that Saturn V on the lawn somewhere. Houston I think.
Slashdot Mirror
Yes but I wondered about resistance. A big capacitor with a high internal resistance would effectively be a battery.
Electric vehicle charge times seem to be limited by the capacity of household wiring at the moment.
A capacitor has the ability for almost all braking energy to be fed back into it.
Maybe, but don't assume that this device works exactly like a 1000uF electrolytic cap.
TFA:
52.220 kWh of energy
A single car battery is about 200 watt hours. The batteries in the Tesla Roadster holds 53 kWÂh according to Wikipedia.
Now thats an interesting coincidence. I wonder if they just worked out how much capacitor would be needed for the power plant of the Tesla.
Probably it is just avoiding secure hosts, like yours. OpenBSD hosts tend to be secure because it is selected by people who put security before other requirements.
The attacker still has to use a local vulnerability to get from a user account to root. This may be less likely on OpenBSD because of their code review process.
Pretty soon they will be able to use an old WhiteKnightTwo for the purpose.
Someone get them an award winning industrial designer please.
Well I suppose beauty is in the eye of the beholder. Personally I think they are very elegant vehicles.
That's a little presumptuous, don't you think? In the multi-billion year history of the Universe, and all the innumerable planets that have ever existed in it, you're really SURE that there hasn't ever been any affordable space tourism?
No technologically inclined species on a small planet with rather low gravity? No planets with super-volcanic mountains that peak just slightly shy of orbit? No species of living beings robust enough that they can handle the massive G-forces of being fired out of a cannon on the ground? etc.
Boy is your face going to be red when the Quixblarxians land their space ship in the parking lot of the nearest courthouse just to sue you for defamation of their space tourism industry...
Okay, its the first in the history of the observable universe.
Yes that was the idea but I don't see how they could have planned to do it that way. Shuttle can't re-enter from an earth return trajectory. A capsule like Apollo was needed for that so however you see it, Apollo was a requirement.
You could build a dedicated earth-orbit to moon ship that flies back and forth but never enters the atmosphere. Use the shuttle to go up to the station or whatever and rotate the crews, but you don't need to send it out of LEO. Takes a bit more infrastructure, but ultimately it's a bit more flexible.
With our limited infrastructure and immature technology that approach is not safe. The vehicle in lunar orbit (even better the one on the lunar surface) needs to be able to aerobrake and land on Earth.
Then we should have continued on from Apollo. Build a small base and a reliable transportation system. The Saturn V was too expensive and the program had to stop.
That was the idea behind the space shuttle... but then politicians got involved, and we see how well that ended up. Ironically, it would have been cheaper on operational costs alone (ignoring shuttle R&D) just to keep building and flying the Apollo-issue Saturn V, even without economy of scale or eventual improvements.
Yes that was the idea but I don't see how they could have planned to do it that way. Shuttle can't re-enter from an earth return trajectory. A capsule like Apollo was needed for that so however you see it, Apollo was a requirement.
From here on getting things done in space will require a twenty to thirty year outlook. Unmanned exploration can get away with that by being cheap, but manned programmes need constant political support and it is hard to get that for more than ten years at a time.
Then we should have continued on from Apollo. Build a small base and a reliable transportation system. The Saturn V was too expensive and the program had to stop.
Doing it that way adds at least 20 years to the timeline. But if you want to build anything big it has to be made either on the moon or on a near earth asteroid.
The fact is that nobody is going to build large scale SPS in the next hundred years.
But I can believe orbiting mirrors to keep solar power plants working at night. Mirrors can be made extremely light and once delivered to LEO they could fly themselves up to a high orbit.
Not "Thus Spake Zarathustra?"
I always had the impression that being #2 to Hoover involved deep throat duties anyway.
This is bringing back too many '80s memories for me. I'm running CP/M on a Z80 again. Dot matrix printers. Pulse dialing. Seven inch floppy disks. Oh no....
A billion Indians disagree.
About what? That the poms are okay at rugby and football, or bad at Cricket? C'mon it can't be the cricket.
Rugby, Football.
Fixed it for you.
The second world war.
I am not an expert to answer, but I think most people's fears about wireless power causing caner are misguided. The power is not sent electrically through the air, not is it transmitted through gamma rays or any other radio waves. It is a high frequency alternating magnetic field. Magnetic fields alone have been shown to have no negative affects on living organisms. Besides, I'm pretty sure if this thing is really dangerous, someone will find out before there is one in your home, so I wouldn't worry too much about it.
Your high frequency magnetic field is actually an electromagnetic field, which is exactly the same stuff as gamma waves and radio waves.
Even on windows I have seen flash sites tell me that I need to upgrade flash to (say) version 9 because I was already running version 10.
Thats what happens when you get teenagers to do your configuration management.
There is no way Win2k will be supported in 2020.
The company I work for deploys ATC systems running linux on COTS hardware. Maintaining such systems is actually quite difficult because if you validate your system with a particular component (a graphics card for example) you might not be able to buy that same card six months down the track.
On the OS side they will have problems as well. The version of windows they deploy will eventually reach end of life. If they deployed on a Free OS they (supplier or customer) would have been able to maintain it themselves regardless of what happened upstream.
a Shuttle weighs 4.5 million pounds with a maximum payload weight of approximately 50,000 pounds
That's for the entire stack - orbiter, boosters, and full external tank. The orbiter itself has an empty weight of about 180,000 lb. So you're looking for a launcher that can put 200,000lb or so into orbit; there are only a couple: Saturn V, Energia, and the shuttle (remember, the orbiter goes into orbit too, plus whatever it's carrying).
Well there is that Saturn V on the lawn somewhere. Houston I think.