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Do we have the Tech to send a Probe to Alpha Centauri?

Buck Rogers

Captain
Captain
Question:Do we have the Tech to send a Probe to Alpha Centauri? if so why have we not sent it yet, it's our closest neighbor at 4.3 Lys away,but at top Ion drive speeds it might not be feasable.

Any thoughts

Signed
Buck Rogers
 
Probably because it would take so long to get there.

Even if we sent it faster then the Voyager probes are going... they left Earth decades ago and have only just started to get into deep space.
 
We may have secret tech. A few years ago the Pentagon was talking about a space bomber. It would take off from the ground, fly into space and drop bombs. Most US fighters can drop a 2,000 pound bomb. A bomber drops a bunch of bombs. We use this shitty space shuttle that blows up all the time when we have the tech for a space bomber. There are also old rumors of a spy plane called Aurora and corresponding seismic shock waves headed in a path towards Groom lake. The SR-71 is old junk. How fast does the new thing go?

If NASA ran Christopher Columbus' voyage, his ships would still be going in circles just outside port and it would cost billions and billions. Then they would get this great idea to build a trillion dollar raft for 3 people out in the water and a ship could visit it for a billion bucks each time, but only one American would ever be on board and mostly the Russians would run it. They would run a few experiments and further the cause of going in circles.
 
Voyager is the fastest thing we have flying in space right now, and it just left the solar system, took it what, 30 years. So yeah, we won't be seeing a probe reach the closest solar system in any of our lifetimes, unless we find a new form of propulsion. Even Ion Drive isn't fast enough, unless it were fusion powered or something.
 
broberfett said:
We may have secret tech. A few years ago the Pentagon was talking about a space bomber. It would take off from the ground, fly into space and drop bombs.

Please tell me this isn't that "Rods from God" kinetic impactor rubbish.

As to the OP, I doubt we'll see any probes sent to Alpha Centauri anytime soon. Even if the technology existed to send a probe there before we were all long dead, would it even be possible to pack enough fuel on board?
 
I believe it was to be real bombs. Looking at when the shuttle was designed and how they keep using it to fly in circles forever, I've thought for a longtime that there are two space programs-one public and one private. The private program has the good stuff and is probably 50 years advanced beyond what we see(70s garbage).
 
Actually New Horizon is the fastest spacecraft at this time. It the one that is heading for Pluto. But it want be there until around the summer of 2015.

But they might could the sun to slingshot the spacecraft out Alpha Centauri. Even if this could work. It would take centuries for it to get there. But traveling to will have to wait. Unless someone invent a FLT drive engine or built a spaceship that is 1000 miles in lenght,with 99 percent of it is the fuel and engine.But that still would take sometime.So the best thing to do is to wait.Even though it won't happen in our life time. It will happen.
 
there was a Project Orion which called for the construction of an atomic spacecraft that would have been used for voyages to proxima centuari, i believe.
 
broberfett said:
A few years ago the Pentagon was talking about a space bomber.

A few years ago, the Pentagon was talking about a quick 6-month, in-and-out operation to topple Hussein's regime in Iraq, followed by a welcoming ceremony on the part of the Iraqis. Talk is cheap.

Incidentally, when was the Pentagon talking about space bombers? Do you have any sources for this?

It would take off from the ground, fly into space and drop bombs. Most US fighters can drop a 2,000 pound bomb. A bomber drops a bunch of bombs.

What would be the purpose of dropping bombs from space?

We use this shitty space shuttle that blows up all the time when we have the tech for a space bomber.

We do? Where? Do you have any evidence for it?

If by "tech for a space bomber," you mean we could design a shuttle that could lift off and drop things from orbit, then yes, we "have the tech." That's nothing new.

There just wouldn't be any point in building something like that, because regular airplanes can do the same job, a lot easier and for a lot less money.

There are also old rumors of a spy plane called Aurora and corresponding seismic shock waves headed in a path towards Groom lake. The SR-71 is old junk. How fast does the new thing go?

There are also rumors about UFOs over Groom Lake and aliens kept in containment. Doesn't make it true.

Even if there is a secret spy plane, how is that relevant? Secrety spy planes have nothing to do with deep space missions. Flying in the air really fast and quiet is a totally different ballgame.

If NASA ran Christopher Columbus' voyage, his ships would still be going in circles just outside port and it would cost billions and billions. Then they would get this great idea to build a trillion dollar raft for 3 people out in the water and a ship could visit it for a billion bucks each time, but only one American would ever be on board and mostly the Russians would run it. They would run a few experiments and further the cause of going in circles.

Is it NASA's fault that no one - politicians OR the public - is interested enough to give them decent funding? Space exploration is expensive. Nobody wants to foot the bill, so they use what scraps they have.

I've thought for a longtime that there are two space programs-one public and one private. The private program has the good stuff and is probably 50 years advanced beyond what we see(70s garbage).

Why would the government mantain two separate space programs? Why would they waste money on a useless one? Why would they keep a "good" program secret? What evidence do you have that there are

A) Two space programs

and

B) One of which is 50 years more advanced than the other?

If it exists, then why haven't we seen evidence for "technology 50 years more advanced" in any aspect of our lives?
 
Even if we knew there was an Earth-sized planet orbiting within the habitable zone of a life-friendly star less than four light-years away and could get a probe there in 10 or 20 years, using a bunch of nuclear bombs or antimatter, how could we expect to pick up viable signals from such a probe over that distance?
 
Yes, we have the technology.

What we don't have is enough technology right now to do it economically.

The thing to do would be a nuclear powered particle beam in space propelling a probe attached to a superconducting sail. Basically a giant loop of superconducting wire.

Theoretically, the probe would accelerate at roughly 1,000 Gs. Reaching a speed of about 1/3 of the speed of light and arriving at Alpha Centauri (flying by) in 13 years or so with data return in about 18 years.
 
That's really the other problem, radio signals are just way to slow for that kind of distance. Even if we could get a probe there fast it would be 2 decades before we got data back. There would be a high risk of failure because we wouldn't know if it worked or not for a really long time, hard to program course corrections with that kind of lag.
 
I doubt course corrections would be possible after the initial acceleration period.

Not significant ones anyway.

Like I said, there would have to be flybys because the probe couldn't slow down.

I figure it might be possible to separate some small probes from the main bus and alter their courses enough to have them make suicide dives into Alpha Centauri and some of the planets atmosphers if any.
 
Dayton3 said:
The thing to do would be a nuclear powered particle beam in space propelling a probe attached to a superconducting sail. Basically a giant loop of superconducting wire.

Theoretically, the probe would accelerate at roughly 1,000 Gs. Reaching a speed of about 1/3 of the speed of light and arriving at Alpha Centauri (flying by) in 13 years or so with data return in about 18 years.

This is Robert L. Forward's Starwisp proposal, which has been around for a couple of decades now. Another more recent proposal is the Starseed concept, using a large number of nanoscale probes -- with little capability individually, but collectively able to send a fair amount of data.

A good website for information on this topic is the Centauri Dreams blog, which is dedicated to research into interstellar flight possibilities and deep-space exploration, with a particular focus on the Alpha Centauri system and the prospects for missions there.
 
Dayton3 said:
I doubt course corrections would be possible after the initial acceleration period.

Not significant ones anyway.

Like I said, there would have to be flybys because the probe couldn't slow down.

I figure it might be possible to separate some small probes from the main bus and alter their courses enough to have them make suicide dives into Alpha Centauri and some of the planets atmosphers if any.


Yeah, course corrections from Earth wouldn't be practical.

It would make more sense to invent AI for the probe so it would make decisions when it came across problems or the unexpected.
 
A space bomber can't be shot down by conventional anti-aircraft defenses. The Pentagon at the time had appointed a General from Space Command for the first time, indicating the importance of the command. The Aurora was a space plane. Look at the shuttle and when it was designed. The military maintains current technology. If you are hearing about things like Nano carbon tubes they have had them for years and years-the old junk. The Stealth Bomber and fighter flew for years with nobody knowing shit about it.

The reason to maintain two programs is secrecy and contempt for the general public. Maintaining a tech that is far beyond the public allows a better permanent system of control over the little people by the power elite. You can't ever have a rebellion against tech that is extremely advanced of your own on that level.

As far as military planning in Iraq, Politicians control that-politicians that make lots of money on war. You assume their goal is to win and leave?
 
Uhh, what does this X-Files stuff about a "space bomber" have to do with Alpha Centauri? There are two entirely unrelated discussions going on in this thread. Perhaps the people who want to talk about bombers should spin off a separate thread for it.
 
Christopher said:
Uhh, what does this X-Files stuff about a "space bomber" have to do with Alpha Centauri? There are two entirely unrelated discussions going on in this thread. Perhaps the people who want to talk about bombers should spin off a separate thread for it.

It goes to the question of whether our space program is using sub standard garbage while better things are concealed from us. If we have better tech than 1970s shuttles then getting anywhere in space would be a little different.
 
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