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[Wired] CERN traps antimatter atoms for 16 minutes - Page 11

post #101 of 117
When I saw the title I thoug it was going to be for for 16 microseconds or something, lol.

16 minutes is a hell of a long time to trap something so stable.
post #102 of 117
Quote:
Originally Posted by thiru View Post
What the hell? you think just because an object is in space it doesn't have mass and inertia? any object with mass has a natural tendency to resist efforts to move it, or change its movement, regardless of whether they're on a planet or not. This is called inertia.
Even on Earth you can observe this. Throw a dictionary and then throw a piece of paper horizontally at it while it's in the air. It won't budge, and that's only with a mass ratio of a hundred. Can you imagine a hundred million? It's not because of gravity because gravity is vertical and it's not friction or air resistance unless you let it fall too much (so do it at the apogee of its flight if you want).

Nuclear bombs blown far away enough and kinetic impactors would push the asteroid away, not blow it up. Attaching rockets would certainly not blow it up either, just use thrust to move it away.

The European Space Agency made a study on the very asteroid you're talking about, and they think a 1 ton spacecraft with enough kinetic energy would do. And it's part of a project to study the effects of kinetic impactors on 2 real asteroids (one of them being Apophis) that could be launched as early as 2013. Now why would they do all that research and consider building them if you can simply push it with your arms?
I'm not really up on what ESA plans to do if it all. They hardly do anything as it is.
Why wouldn't they send a human to go push the asteroid? Because it's too dangerous to put a human out that far. We can't even shield astronauts from radiation so they would be exposed to harmful levels of radiation being so far outside Earth's magnetic field as well as the food.
post #103 of 117
Quote:
Originally Posted by PoopaScoopa View Post
I'm not really up on what ESA plans to do if it all. They hardly do anything as it is.
Why wouldn't they send a human to go push the asteroid? Because it's too dangerous to put a human out that far. We can't even shield astronauts from radiation so they would be exposed to harmful levels of radiation being so far outside Earth's magnetic field as well as the food.
Is that really all you have to say? you know very well that what I was arguing was the force required to push an asteroid off course, not the ability to send an astronaut to it.
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post #104 of 117
Thread Starter 
100 replies! Antimatter
post #105 of 117
Quote:
Originally Posted by cl04k3d View Post
If I fuse myself with antimatter, well then it wouldn't really matter.
if you touched anti-matter our solar system would blow up.
so please don't.

1g of matter and 1g of anti-matter touching = 500mega ton bomb.
    
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post #106 of 117
Quote:
Originally Posted by BKsMassive View Post
if you touched anti-matter our solar system would blow up.
so please don't.

1g of matter and 1g of anti-matter touching = 500mega ton bomb.
43 kilotons actually.
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post #107 of 117
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post #108 of 117
Brb while I go inhale some antihelium so I can sound like a tough guy.
Edited by cl04k3d - 5/8/11 at 5:00pm
It's TURBO TIME!
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post #109 of 117
Quote:
Originally Posted by thiru View Post
No, you need to take a course on inertia. Do you realize that asteroid is a hundred million times heavier than an astronaut?

Also explain to me why NASA is spending millions on methods to destroy an incoming asteroid, such as kinetic impactors (aka hurling massive objects at it), nuclear bombs, attaching rockets to it, gravity tractors (aka diverting its trajectory slowly thanks to massive objects), ion beams?
NASA was also thinking about mirrors and sunlight to alter the course of an asteroid. The asteroid would need to be discovery and plotted to allow enough time to alter the asteroid path. This is a much more efficient and effective approach. It does require long term planning as it takes time.
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post #110 of 117
Quote:
Originally Posted by PoopaScoopa View Post
It's very little. Like the pressure of a piece of paper pushing on you. In space though, that's enough to move around. After awhile, that speed starts to add up and it can be very fast. Like the the near Earth asteroid that's coming around Friday the 13th, April 2029 with a possible collision in 2036 depending on how close it flies by - you can send an Astronaut up to push it off course with just your finger.
Speed doesn't magically add up, you need force for this -- if you hurl an object in space it'll continue to move at the same speed as it was thrown, unless external factors are applied to make it move even faster.

You can't simply push an object in space with bigger mass and expect it to move at your command, in fact if you threw a bowling ball with the same force towards somebody in space as you would on Earth, the blow would be just the same.

You would need to apply just as much mass to the object in question to make it stop moving, this can also be done with kinetic energy or using thrusters to create friction and make the object stop.
Edited by SoulThief - 5/8/11 at 5:59pm
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