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Why Interstellar Travel Will Be Possible Sooner Than You Think
Singularity Hub ^ | June 18, 2018 | Mark Jackson

Posted on 06/21/2018 10:43:19 PM PDT by 2ndDivisionVet

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To: Garth Tater

LOL. Were you reading my high school physics exams? I used to think like that.


101 posted on 06/22/2018 8:58:02 AM PDT by ProtectOurFreedom
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To: from occupied ga
Oh well if it's on the internet it has to be true.

Gee, you're on the internet. Maybe you're real, but you're probably just an algorithm.

102 posted on 06/22/2018 9:46:47 AM PDT by Windflier (Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
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To: Windflier

There is a class of freeper I refer to a space kadets. They apparently have no knowledge of physics mathematics or thermodynamics, but they fervently believe in a future where space travel is commonplace, a future where humans colonize mars, moon colony will be economically feasible, and some of the fools even believe that we’ll be able to travel to the stars. Captain Kirk wants you.


103 posted on 06/22/2018 9:58:32 AM PDT by from occupied ga (Your government is your most dangerous enemy)
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To: freedomjusticeruleoflaw
I know that our solar system is likely all that we will ever be able to explore

Ever? Not even in the next thousand years? Not even in the next ten thousand? Ever is a mighty long time, my friend. A lot can happen in forever.

Think about it. Not even 150 years ago, most people, including the best academics, engineers, and industrialists, believed that heavier than air flight was impossible.

The Wright brothers proved them all wrong in 1903, and less than seventy years later, we were walking on the moon.

104 posted on 06/22/2018 10:56:26 AM PDT by Windflier (Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
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To: DiogenesLamp
Miguel Alcubierrie has already worked out the math

Yep. And (if memory serves) he did it within the confines of Einsteinian physics.

105 posted on 06/22/2018 11:02:59 AM PDT by Windflier (Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
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To: Windflier
Yep. And (if memory serves) he did it within the confines of Einsteinian physics.

Yup. The primary problem with his solution is energy. If I recall properly, his methodology requires an energy level that would be the equivalent of converting all the mass of Jupiter into energy. In other words, highly impractical.

But I have read a lot of other people have massaged his math to the point where they think it can be done with a lot less energy input, but still more than what mankind can currently manage.

At least they have a good theoretical foundation for looking in this direction anyway. Maybe they will achieve a breakthrough at some point.

106 posted on 06/22/2018 11:14:57 AM PDT by DiogenesLamp ("of parents owing allegiance to no other sovereignty.")
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To: cpdiii

Show your work.


107 posted on 06/22/2018 11:19:51 AM PDT by Dagnabitt ( I'm old enough to remember "the Wall".)
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To: from occupied ga
There is a class of freeper I refer to a space kadets. They apparently have no knowledge of physics mathematics or thermodynamics, but they fervently believe in a future where space travel is commonplace, a future where humans colonize mars, moon colony will be economically feasible, and some of the fools even believe that we’ll be able to travel to the stars.

Ha!

Some comments herein deserve a reply :).

Fact: 1g (the earths' gravity), equates to accelerating at an ever increasing rate of 32 fps. Our bodies are fully capable to sustain this rate of acceleration for a lifetime.

1g for 1 minute > 1100 mph - the speed of earth's rotation.
1g for 1 hour > 67,000 mph - earth's speed around the sun.
1g for 1 day > 1,342,000 mph - earth's speed relative to the local group of galaxies ( 0.2% of the speed of light ).
1g for 1 year > speed of light ( 669,600,000 mph ).

Exceeding the speed of light, relatively speaking, may not be doable; covering a distance, faster than light from another frame of reference, is doable. Not only are we lacking in knowledge, worse, we're lacking imagination!

https://www.omnicalculator.com/physics/acceleration

108 posted on 06/22/2018 11:23:02 AM PDT by Errant
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To: C210N
Should mount the lasers on the spacecraft itself. Laser light travels at the speed of light for any observer, so where it is sourced is immaterial. Then, braking is a non-issue, with a turning maneuver about half-way.

If you did that, then you'd have to also accelerate the mass of the laser(s) AND the power plant in addition to the spacecraft itself... which would reduce the amount of acceleration for the given amount of power input.

109 posted on 06/22/2018 1:56:32 PM PDT by Sparticus (Primary the Tuesday group!)
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To: freedomjusticeruleoflaw

Let me explain.


Just because it hasn’t happened in this time period - as far as we know, and lets just say UFOs are some natural thing, how do you know that in the 4 billion odd years previous that your putative machines did not come here?

How do you know that others may use some form of travel we cannot even comprehend?

How do you know they didn’t just pop in to orbit 50 years ago, take a look and put out the quarantined sign?

How do you know if the war fleet massing in the Ort Cloud will spare us, given their weapons can strike from light years distant?

What makes you an expert on alien behavior and technology, given that aliens are alien?


110 posted on 06/22/2018 4:04:26 PM PDT by PIF (They came for me and mine ... now it is your turn ...)
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To: Errant

Thank you for confirming my thesis. The one about not understanding newton or thermodynamics (What mechanism do you propose to produce the 1 g acceleration. Here a miracle occurs?)


111 posted on 06/22/2018 5:06:13 PM PDT by from occupied ga (Your government is your most dangerous enemy)
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To: Windflier

You’re arguing against yourself. Because forever is a long time, and because aliens would have already had forever if life occurs naturally everywhere, they would have been here many times already. They haven’t, aren’t, and won’t. Distance is insurmountalble...


112 posted on 06/22/2018 8:02:57 PM PDT by freedomjusticeruleoflaw
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To: 2ndDivisionVet
Facebook co-founder Mark Zuckerberg.

Then I guess conservatives will never get to see the pictures.

113 posted on 06/22/2018 8:09:15 PM PDT by Tolerance Sucks Rocks ( The US Constitution ....... Invented by geniuses and God .... Administered by morons ......)
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To: freedomjusticeruleoflaw

I can think of many reasons we might never have been visited besides the apparent difficulty in travelling the distance to get to us. Why does the distance problem have to be the right one for you?

Freegards


114 posted on 06/22/2018 8:12:17 PM PDT by Ransomed
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To: Ransomed

I don’t think people fully appreciate just how vast space is. The nearest star is over 4 light years away. That’s 186,000, times 60, times 60, times 24, times 365, times 4 miles away...
That’s the nearest star.


115 posted on 06/22/2018 8:17:45 PM PDT by freedomjusticeruleoflaw
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To: freedomjusticeruleoflaw

Yeah, it’s a good point. But we only have 1 example of life so far, us. So for just one other theory, maybe the drive to explore is super rare or something. Hard for us to imagine, but that would be truly alien, right?

Don’t get me wrong, your theory is as valid as anything else for sure. It can’t be proven to be wrong. I can’t see how it is proven right either though.

Freegards


116 posted on 06/22/2018 8:25:13 PM PDT by Ransomed
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To: freedomjusticeruleoflaw
if life occurs naturally everywhere, they [aliens] would have been here many times already.

They have been here many times already. Here, and everywhere throughout the cosmos. Countless millions of times.

The universe is unimaginably huge, and teeming with life of all kinds, some of it far more technologically advanced than we are.

117 posted on 06/22/2018 10:45:14 PM PDT by Windflier (Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
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