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Fermi Paradox... why? by Henrietta Levitt - Thu, 22 May 2014 00:54:34 EST ID:ILYTISHs No.53812 Ignore Report Reply Quick Reply
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Another thread made me start thinking about this. The Fermi Paradox states (thanks, Wikipedia):

>The Sun is a young star. There are billions of stars in the galaxy that are billions of years older;
>Some of these stars probably have Earth-like planets which, if the Earth is typical, may develop intelligent life;
>Presumably, some of these civilizations will develop interstellar travel, a technology Earth is investigating even now, such as that used in the proposed 100 Year Starship;
>At any practical pace of interstellar travel, the galaxy can be completely colonized in a few tens of millions of years.

If that's the case, why haven't we been colonized already, or at least seen evidence of intelligent life somewhere in our galaxy?

My take: either A) Life takes a long time to develop, and somehow, improbably, we're the first planet to develop an intelligent civilization in our galaxy, or at least one of the first. We don't see anyone else because there isn't anyone else to see... yet, or we're all still too far apart.

Or b) Given the size and composition constraints of a planet able to foster and sustain life (as far as we know, "habitable zone," big enough to have an atmosphere, small enough to still be rocky, etc.) and continue long enough for said life to begin to explore the galaxy, the home planet simply runs out of resources before meaningful headway can be made. I think this is more of a slow-death kind of thing where maybe we get to do some exploration within the solar system and maybe a bit beyond for a while, but overpopulation, war, disease, famine, and whatever else causes us to realign our priorities from space exploration to merely sustaining life on our own planet. A civilization that had the foresight to know something like that was happening could theoretically, if they had the goal of galactic expansion from the start, avoid this situation, but the problem is that NO civilization has that kind of 10,000 year plan from the get-go, and they all sputter out right before they could have pulled it off. There's not a textbook on "how to succeed as a species" that gets handed out to a life form when it develops self-awareness,…
Comment too long. Click here to view the full text.
270 posts and 65 images omitted. Click Reply to view.
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John Wheeler - Sun, 25 Dec 2016 13:04:00 EST ID:Gj+pjkQQ No.56736 Ignore Report Quick Reply
>>53812
OP assumes that life formed here spontaneously. It's possible that the Earth was colonized more like a petri dish rather than armed invaders.
>>
James Elliott - Mon, 26 Dec 2016 22:59:20 EST ID:d7Fd77VL No.56737 Ignore Report Quick Reply
>>56736
This doesn't resolve the Fermi paradox, it just pushes the buck of explaining the origin of life off to some other hypothetical world.
>>
Karl Jansky - Fri, 06 Jan 2017 16:18:31 EST ID:gmm1Ygns No.56747 Ignore Report Quick Reply
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>>56737

Yep. This whole Earth-as-a-nature-reserve is ridiculous. With or without panspermia. It just introduces more questions, like why does no star we've examined in the galaxy show any sign of mega-engineering? Why don't we receive radio signals from foregone civilizations? Did the aliens put up a huge blanket across our skies to blind us from the greater galactic society, and if so how?

The simple answer is that there are no contemporary alien civilizations in our stellar neighborhood. And tbh judging from how us humans act I am not surprised in the slightest.
>>
Subramanyan Chandrasekhar - Sun, 08 Jan 2017 12:44:30 EST ID:pOCnfeYf No.56751 Ignore Report Quick Reply
>>56747
I agree. the average duration between discovering radio signals/transmitting and nuclear destruction has not yet been established.
>>
Edward Pickering - Wed, 18 Jan 2017 17:16:39 EST ID:OXINl/7g No.56760 Ignore Report Quick Reply
>>56747
I agree. Occam's Razor ("the simplest solution is the most likely") demonstrates that "they aren't there" is the probable conclusion to the question, "why can't we see them?" A single distant civilization hiding itself from observation is much simpler and more likely than all of them making a concerted effort to blind us. It's possible that there are a couple others out there who don't want to be found, but the more populated systems there are, the harder it gets to avoid detection.

Also, nice Lego pic. I had that one (still do, technically, since it's in the Big Bin with all my Legos).


Gas Station by MOON FUEL - Sat, 17 Dec 2016 00:07:43 EST ID:3JvngLEe No.56726 Ignore Report Reply Quick Reply
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Right now, I'm working on opening a gas station in low orbit around the moon, mostly refueling for interplanetary & deep space exploration. It'll have mechanics on site, parking on the dark side, though a bag of doritos will be $70 and a diet coke will be $14, you'll thank me when you come through. The air force 109 airlift is testing our tech in their fuel depot on the south pole. So I'm still going to come back to earth quarterly to visit the black bear sanctuary that I work at, but they've been getting so used to human food that they're getting pretty aggressive when I see them. Accually I've been pretty good about being able to chase bears out of the front yard, just by waving a broom and yelling, but my parents were out there the other day and ran when they saw our bear, and the little guy chased them. That really gave my parents a shock!
So, tldr; space won't kill me, the planet won't burn, we'll just leave it to the bears and other fluffy animals.
>>
Tycho Brahe - Sun, 18 Dec 2016 02:16:16 EST ID:M/g1akbS No.56727 Ignore Report Quick Reply
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>>56726
Neat.
>>
Robert Dicke - Sun, 18 Dec 2016 07:11:00 EST ID:gmm1Ygns No.56728 Ignore Report Quick Reply
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Will you accept charons as payment, or just he-3?
>>
Irwin Shapiro - Sun, 18 Dec 2016 16:23:22 EST ID:rszf0FN0 No.56729 Ignore Report Quick Reply
What about me I can only pay in hiffwe?
>>
bob - Mon, 19 Dec 2016 02:09:33 EST ID:YR8vKebs No.56730 Ignore Report Quick Reply
derp
>>
Stephen Hawking - Sat, 14 Jan 2017 23:54:55 EST ID:veR+j0aW No.56759 Ignore Report Quick Reply
hey man I'll take a pack of zigzag blues, and a lighter too.


EM DRIVVVVVVVVVVE by Joseph-Louis Lagrange - Sun, 20 Nov 2016 17:41:15 EST ID:rszf0FN0 No.56665 Ignore Report Reply Quick Reply
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HOLY SHIIIIIIIIIIIIIIIIIII

So apparently after decades of people trying to debunk it and call it pseudoscience, NASA has confirmed the Shawyer EM Drive actually works, producing thrust via microwaves using no propellant, apparently violating the principle of equal and opposite reaction:
http://www.sciencealert.com/it-s-official-nasa-s-peer-reviewed-em-drive-paper-has-finally-been-published

The authors suggest that perhaps the long-dead pilot-wave/Bohmian interpretation of Quantum Mechanics is now a contender again thanks to this new evidence. The microwaves 'push off' of the quantum vacuum, preserving Newton. But if pilot-wave is the true QM, that means not only that alternate realities exist, but that we see them as real effects in our world! (i.e. in the generation of interference patterns in the double-slit experiment. But surely this is but the most minor influence this generates, and probably only the easiest to notice, since in Bohmian mechanics the wave function that governs any given particle system spans the entire universe.)

NASA's totally unoptimized EM drive could get us to Mars in a tithe of the time of even Musk's proposal, with a ship a fraction of the mass ('cause no propellant.) It's bottle popping time /sagan/!
58 posts and 13 images omitted. Click Reply to view.
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Anders Angstrom - Wed, 11 Jan 2017 11:11:34 EST ID:ZZZCwSAu No.56753 Ignore Report Quick Reply
>>56745
To be fair, this article is mostly an indictment of the current state of research into fundamental physics, not the authors of the paper. The EW lab can't be expected to solve fundamental issues in physics with a single paper, their own suggested solutions are that, merely suggestions in a vacuum of answers.

That the rest of the physics community has resolutely refused to engage this issue to settle it one way or another is due to insularity and fingers-in-the-ears syndrome and is entirely the 'problem' of the physics community at large, not this one paper or even any of the people who have been doing precisely what this paper suggests, trying to test the effect.
>>
Harlow Shapley - Wed, 11 Jan 2017 18:50:22 EST ID:bK9SRfvs No.56754 Ignore Report Quick Reply
>>56753
No, the actual criticism of the paper in the article is about their methodology. That is 100% the fault of the authors of the paper. They can be expected to question their own assumptions made in data reduction but they don't appear to have done so.

It's not the job of the rest of the community to do anything other than provide criticism right now. Before asking other researchers to invest their time and money in verification you need to convince them that you have done every test you can and explored all sources of error. That hasn't happened yet. The paper wasn't even published in a physics journal, EW doesn't appear to be interested in engaging with the physics community.
>>
Isaac Newton - Fri, 13 Jan 2017 02:02:38 EST ID:dz7Zv84F No.56755 Ignore Report Quick Reply
>>56754
>EW doesn't appear to be interested in engaging with the physics community.
That's actually a very common trait of these folks who research reactionless drives / free energy / perpetual motion machine / cold fusion. Most of them appear to have an engineering background as opposed to a science background. I suspect engineers are more easily fooled by confirmation bias, as their goal is to repeat an experiment until it succeeds. The philosophy of natural scientists would instead be to try to punch holes in their pet theories until the experiment fails, and if it doesn't the hypothesis would be correct. The mindsets of the editorial boards of engineering and physics journals are in general quite similar.

The other two independent groups in China and Germany working on the EM drive have now realized their initially positive results were caused by experimental errors and withdrawn their supportive opinions, by the way.
>>
Walter Baade - Fri, 13 Jan 2017 19:10:19 EST ID:yzfSDg8q No.56756 Ignore Report Quick Reply
>>56755
>The other two independent groups in China and Germany working on the EM drive have now realized their initially positive results were caused by experimental errors and withdrawn their supportive opinions, by the way.

Would this be the same Chinese group that is claiming that they've been successfully testing it in space and now plan to equip their satellites with this technology?
>>
Edmond Halley - Sat, 14 Jan 2017 04:56:45 EST ID:dz7Zv84F No.56758 Ignore Report Quick Reply
>>56756
No, that would be the Xi'an team lead by Juan Yang who actually conducted experiments and published their research. And no, Chen Yue's team has not successfully tested the EM drive in space. Right now his only verifiable success is getting a couple of patents approved (which isn't a very radical development, as cold fusion was patented both in the US and Europe). There's also a Chinese state media press release about building a test device that could in the future be tested in space. Let's talk more about how successful or not the tests were if and when the results of the alleged experiment are published.

Feel free to read the press release yourself. There's been a lot of dodgy science journalism and wild claims in the blogosphere about this lately.
https://translate.google.com/translate?js=n&sl=cn&tl=en&u=http://digitalpaper.stdaily.com/http_www.kjrb.com/kjrb/html/2016-12/11/content_357004.htm

And of course every nation would put it on their satellites if it works - this shit would revolutionize space propulsion, provide free energy to Mankind, and allow us to conquer the stars. But all extraordinary claims require extraordinary evidence. Right now the "best" evidence for the EM drive is shit like this >>56712
Just look at that graph and laugh.


SpaceX by Gerard Kuiper - Mon, 21 Dec 2015 21:08:08 EST ID:UJHLFL7d No.55894 Ignore Report Reply Quick Reply
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WE FUCKING DID IT
62 posts and 18 images omitted. Click Reply to view.
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Ejnar Hertzprung - Thu, 29 Sep 2016 12:29:23 EST ID:YHjXylC8 No.56497 Ignore Report Quick Reply
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>>56493
They don't dissipate heat very well at all. That's why they're used to protect the aluminum hull of the shuttle.
If they did, the heat would transfer into the guy's hand.

In space you've only got black-body radiation to take heat away from an object.
>>
Vaccer !u96GHOSTmY - Thu, 29 Sep 2016 12:57:57 EST ID:x76pLNZo No.56498 Report Quick Reply
>>56493
>>56495
https://www.youtube.com/watch?v=QSyY5ACnXVg
>>
Kiyotsugu Hirayama - Fri, 30 Sep 2016 18:39:46 EST ID:3t/weoS/ No.56501 Ignore Report Quick Reply
>>56497

Yeah, one easily forget that you'd experience about the same (more) radiation from the sun in orbit as at the equator of the Earth.

Space isn't cold, at least the part of you that faces the Sun.
>>
Alan Guth - Thu, 20 Oct 2016 16:20:30 EST ID:pqsy+weD No.56544 Ignore Report Quick Reply
>>55997
>pudding like consistency
why isnt this a party thread? A Wizard got banned.
>>
Nicolaus Copernicus - Fri, 13 Jan 2017 21:04:45 EST ID:s8eqU4E9 No.56757 Ignore Report Quick Reply
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Heads up to ya'll

https://www.youtube.com/watch?v=tTmbSur4fcs


Dark matter matters by Clyde Tombaugh - Wed, 09 Nov 2016 03:09:08 EST ID:zHoQtF+M No.56645 Ignore Report Reply Quick Reply
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There's 10 times more matter in the universe than we thought:
http://blogs.discovermagazine.com/d-brief/2016/10/13/the-universe-is-20-times-more-vast-than-we-thought/#.WCLTmjU2thE

A natural law for rotating galaxies:
http://www.physicscentral.com/buzz/blog/index.cfm?postid=5308541299875990673

And finally, matter causes entropy displacement which accounts for the dark matter effect:
https://arxiv.org/abs/1611.02269

TL;DR, we found our missing mass, we can see that rotation speed varies with the amount of visible matter, and with a better understanding of gravity, the whole concept and purpose of dark matter is bunk.
14 posts and 3 images omitted. Click Reply to view.
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William Huggins - Thu, 29 Dec 2016 17:51:00 EST ID:xbVB8ilz No.56742 Ignore Report Quick Reply
>>56741
This electro neutrino drive will allow us entangle entire planets!
>>
Cecelia Payne-Gaposchkin - Tue, 03 Jan 2017 11:49:28 EST ID:lAm+gnu+ No.56746 Ignore Report Quick Reply
>>56738

Doesn't matterm8
>>
Maximilian Wolf - Sat, 07 Jan 2017 15:09:35 EST ID:S3Ee8l28 No.56748 Ignore Report Quick Reply
>>56647
Yeah people always shut down when I suggest that 'laws' may be fundamentally flawed because we've been observing the universe from an infinitesimally tiny window of time/space.
Me: What if gravity is growing stronger and big crunch?
Everyone: kys faggit wut a plebian fukwit hurr durr what if u wasnt born??!
The only axiom I accept 100% is Descartes - Cogito ergo sum.
>>
Jacob Kapteyn - Sun, 08 Jan 2017 01:48:53 EST ID:M/g1akbS No.56749 Ignore Report Quick Reply
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>>56748
Except we can point out to you several cohesive, well thought out arguments with several referenced publications; namely:
>>56649
>>56652
>>56684

Sounds like you're just mad that someone actually took time to read the arXiv abstracts and refute things.
>Everyone: kys faggit wut a plebian fukwit hurr durr what if u wasnt born??!
Did you even read the thread?

Long story short...Calling dark matter "a crock of shit" with no evidence is bound to get great responses on this board. I mean, really? Get off your high horse.

And another thing:
>we've been observing the universe from an infinitesimally tiny window of time/space.
Redshift and CMB would like to talk with you.
>>
Anders Angstrom - Wed, 11 Jan 2017 11:04:37 EST ID:ZZZCwSAu No.56752 Ignore Report Quick Reply
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>>56749
The very idea that anyone could question so unshakeable a truth as the phlogiston theory is unthinkable! These knaves best read the latest paper by Johann Becher and check thyself before ye wreck thyself.
The very temerity to suggest that a physical phenomena could have a cause beyond the scope and verity of our instruments and the mighty dint of our mathematical understanding! It's nigh unto BLASPHEMOUS!


Directly Imaging Planets by Kip Thorne - Sat, 12 Nov 2016 10:31:11 EST ID:L+GCCa0j No.56654 Ignore Report Reply Quick Reply
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Hey guys. Good Morning. We can see other planets directly now.

http://www.universetoday.com/131903/princeton-team-directly-observes-planets-around-nearby-stars/

https://youtu.be/tbu1l672uLc?t=2171

Now we can start getting spectra and figuring out what's out there.
>>
Henrietta Levitt - Sat, 12 Nov 2016 17:10:33 EST ID:rszf0FN0 No.56655 Ignore Report Quick Reply
Whao. I didn't expect us to get something like this this fast. I thought we were going to be stuck reading the tea leaves of Kepler mission transits for decades. Go team human!
>>
Heinrich Olbers - Mon, 14 Nov 2016 08:54:36 EST ID:1q2X8R/n No.56656 Ignore Report Quick Reply
>>56654
This news is really exiting, and im glad you posted this but that video is private you massive wonk
>>
Bruon Rossi - Mon, 14 Nov 2016 10:38:13 EST ID:L+GCCa0j No.56658 Ignore Report Quick Reply
>>56656

Shit, it wasn't private when I posted it. Maybe the video was moved or something. Here's a working link: https://www.youtube.com/watch?v=rCP3rgVj1c0&t=2171

Sorry bud.
>>
Edmond Halley - Sun, 08 Jan 2017 06:18:31 EST ID:LnHMc7oC No.56750 Ignore Report Quick Reply
>>56658
damn they're all just trying to sound smarter than each other and it's kind of taking away from learning about the whole thing


Other worlds by William Herschel - Tue, 08 Nov 2016 04:19:55 EST ID:FFHdMrF/ No.56642 Ignore Report Reply Quick Reply
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Do you think we will be capable to leave our solar system one day? Or that getting even to the closest star is impossible.
1 posts omitted. Click Reply to view.
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Harlow Shapley - Tue, 08 Nov 2016 23:11:23 EST ID:M/g1akbS No.56644 Ignore Report Quick Reply
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>>56642
>>56643
Well, getting out is relatively easy. Just get a big enough rocket for your probe. Voyager 1 has for all intents and purposes left the solar system.

However, I assume you mean HUMANS leaving the solar system, which is a hugely more complex task (crew sanity, food, life support, radiation protection, prolonged weightlessness etc).

Nothing is impossible given enough time and budget.
>>
James Elliott - Tue, 29 Nov 2016 18:44:49 EST ID:2iiuuOyi No.56694 Ignore Report Quick Reply
I think we will, we just don't understand space well enough or have the proper measurement devices to do it yet.

My train of thought goes like this: It wasn't until Newton we were able to invent the sextant, which in turned allowed us to traverse the globe. It wasn't until Einstein that we were able to move around in outer space.

I think next level physics and measurements will allow us to move through space more efficiently. Maybe a holographic universe, gravitational astronomy, or mastery of quantum mechanics will lead to avenues that allow mundane interstellar travel
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Edwin Hubble - Fri, 02 Dec 2016 17:07:44 EST ID:OXINl/7g No.56701 Ignore Report Quick Reply
>>56642
Impossible, no. Time-consuming, definitely. Right now, the fastest speed we think is possible is the Speed of Light, and it would still take ~3 years to get "next door" at that rate. We're not really capable of propelling any considerable mass to the Speed of Light, and we're definitely not capable of stopping if we did. But with technology we currently have, we could get to Proxima Centauri in a few hundred years (maybe not live humans), and that time will only get shorter and shorter. It's just a mater of when we think the travel time is short enough to pay off.
>>
Arno Penzias - Fri, 16 Dec 2016 15:14:16 EST ID:nRjWggLk No.56725 Ignore Report Quick Reply
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I wanna go to space, get me some space pussy.
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Johann Bode - Wed, 21 Dec 2016 19:38:59 EST ID:SD/dK0pb No.56732 Ignore Report Quick Reply
>>56694

europeans were sailing to asia in the late 1400's.


Star Wreck by Roger Penrose - Thu, 01 Dec 2016 05:49:18 EST ID:eoz06Vb6 No.56698 Ignore Report Reply Quick Reply
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Finnish SciFi..

http://onnellinenhauskaablogi.blogspot.ca/2016/11/star-wreck-in-pirkining.html


Europa Mission by Ejnar Hertzprung - Thu, 18 Aug 2016 23:04:09 EST ID:Y3T9nNnZ No.56318 Ignore Report Reply Quick Reply
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Anyone else hyped for the Europa mission?

https://www.youtube.com/watch?v=GqTaDCt_F1Y

The US gov't has given NASA $30 millon to go poke around up there. They're gonna try to scoop up ejecta and see what's in it. I haven't been this interested in a mission since the Titan lander.
9 posts and 2 images omitted. Click Reply to view.
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John Wheeler - Wed, 26 Oct 2016 04:05:44 EST ID:10QI3ruX No.56557 Ignore Report Quick Reply
>>56555
It's a better and more coherent argument without adding the addendum to it. In large part because there's something going on here with research that acutally can make a diffrence.

Think about it, we could finally have an acutal confirmation of alien life, that would start up so much industry. The acutal want for space exploration has to fall down to when does it get to be intresting for private companies, this could be the tipping point. What does that mean? If private companies start pouring into the field, that means that there will be lots and lots of jobs created, these people will need people to do even the simple small jobs.

If you want to look at the entire cycle of space exploration possibly finally becoming the next big thing, this could be the starting point for that. And the industy for that could easily change the current economic future for a lot of people. We should be wanting space exploration to ramp up, not shutting it down.
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William Herschel - Wed, 26 Oct 2016 05:10:14 EST ID:YHjXylC8 No.56558 Ignore Report Quick Reply
>>56557
What incentive would life provide for private companies to invest in space exploration?
>>
James Christy - Wed, 26 Oct 2016 20:20:15 EST ID:10QI3ruX No.56559 Ignore Report Quick Reply
>>56558
You've gotta think about the big picture here. Life in space, sustainable places for people to live, things that could be mined (cause yes humans will eventually sap away from everywhere they vist and live) its like the cycle of industrialization starting up again. But only this time, its going to be on other planets. Mars colonization is the first step to this, discoveries in space will prod on intrest, and in the end, we'll end up with a very much diffrent existance as human beings. Mankind can spread out to the stars, and make colony after colony, thats how I envision it.
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William Lassell - Thu, 03 Nov 2016 16:15:00 EST ID:OXINl/7g No.56616 Ignore Report Quick Reply
>>56558
There's probably no direct incentive outside of advertising (Company X went to Europa, so buy our shit because we're awesome like that). But these are all kinds of scientific benefits that might also be good for a private company down the road: pharmaceuticals, materials science, genetic engineering, etc. Plus just having the infrastructure in place in capitalize on new sources of ET-related income if/when they figure one out would allow you to get in on the ground floor, so-to-speak.
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Astrobiology Student - Wed, 23 Nov 2016 16:14:22 EST ID:UuJsarOA No.56671 Ignore Report Quick Reply
I am! In fact, my Astrobio class had to do mission proposals for a few bodies to search for potential life. My group got Europa, so we came up with the porbe part of CLIPPER that congress asked for. Yes NASA is doing their own that hits the counsel next moth, but its a school project. Let me know if anyone is interested in the presentaton!


Kessler syndrome, ablation cascades? by Concerned Galactic Citizen Commission - Mon, 14 Nov 2016 09:20:43 EST ID:1q2X8R/n No.56657 Ignore Report Reply Quick Reply
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Our planet has a steadily growing shell of orbital debris. This space junk is most concentrated in low earth orbit band. Currently there are somewhere over 1,100 active Gov't and private satellites in orbit, as well as over 2000 that have ceased functioning.
That's just the satellites, as it is estimated that there are over 600,000 pieces of bullshit between 1 and 10 CM just waiting to blow a bunch of holes in any given mission.
Now, if a large enough object were to collide in LEO, or some kind of explosion, these debris objects will begin colliding, creating shrapnel, and impacting MORE objects in a runaway feedback reaction.
This gives us a number of problems, the first being that it totally kills any launch viability for the foreseeable future as well as destroying all the satellites we already have in orbit. The other major problem is that as these thousands upon thousands of objects get kicked around much like atoms in a nuclear chain reaction, a good number of them will de-orbit and enter earth atmosphere causing heating due to air friction. That is bad for obvious reasons.
So /sagan/ how do we take preventative actions against this? Do we even need to worry? what would a post-cascade earth be like?
2 posts omitted. Click Reply to view.
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Riccardo Giacconi - Tue, 15 Nov 2016 06:45:44 EST ID:tQX5ylFX No.56661 Ignore Report Quick Reply
>>56657
https://www.watchcartoononline.io/anime/planetes

have fun OP
>>
William Lassell - Tue, 15 Nov 2016 23:11:16 EST ID:ybUJp2Le No.56662 Ignore Report Quick Reply
Get INTERPOL on this, immediately.
>>
William Fowler - Wed, 16 Nov 2016 13:32:50 EST ID:YHjXylC8 No.56663 Ignore Report Quick Reply
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>>56661
I wanted to like that so much just for the realistic setting, but holy fuck the dialogue, characters, and unnecessary cutesy Japanese shit randomly crammed in is just too cringeworthy.
It's just highschool drama, but japanese and in space.
>>
William Lassell - Sun, 20 Nov 2016 04:15:45 EST ID:tQX5ylFX No.56664 Ignore Report Quick Reply
>>56663
the high school shit gets real BTFO later on. it's part of the arc deal with it for a few eps
>>
Mike Brown - Mon, 21 Nov 2016 10:03:54 EST ID:89x/mOqK No.56669 Ignore Report Quick Reply
lookin pretty clean on google maps


Black hole instead of a planet x? by John Riccioli - Mon, 17 Oct 2016 18:06:57 EST ID:eY06FJul No.56529 Ignore Report Reply Quick Reply
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Wouldn't it be more likely that a [stationary?] black hole is accounting for the gravitational effects thought to be responsible by planet x?
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Carl Seyfert - Sun, 23 Oct 2016 17:53:43 EST ID:gmm1Ygns No.56552 Ignore Report Quick Reply
>>56542

It's always aliens, bro.

Like that newly discovered star that has a funky dimming effect. Totally an alien Dyson sphere under construction. I refuse to believe anything else.
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Walter Baade - Mon, 24 Oct 2016 22:49:24 EST ID:M/g1akbS No.56554 Ignore Report Quick Reply
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>>56540

> >something would've collided with it within 4 billion years.
>That would be true if you had a mathematical equation for it

So I feel compelled to add this. Something would always hit it, due to dust. I mean, check these links out and read up on dust:
http://atropos.as.arizona.edu/aiz/teaching/nats102/mario/solar_system.html
http://stupendous.rit.edu/richmond/answers/dust.html

So like, if there was a black hole out there, with dimensions of 7"....If it lasted for this long [hawking radiation and all that], then it would probably have a faint infrared glow from the accretion disk formed around it. It would have an accretion disk because all that gas its running into has to go somewhere. Its hill sphere is the effective radius of a planet with mass x, not just 7".
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William Lassell - Thu, 03 Nov 2016 16:21:01 EST ID:OXINl/7g No.56617 Ignore Report Quick Reply
>>56529
No, because black holes are rarer in the universe than planets, and a black hole with a small enough mass to cause those effects but without eating the rest of the Kuiper Belt and Oort cloud would be pretty hard to form in the first place. And if it did form, the supernova that caused it would have blasted the rest of the solar system to bits.
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Russel Hulse - Thu, 03 Nov 2016 17:35:06 EST ID:eY06FJul No.56620 Ignore Report Quick Reply
>>56617
Ty
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William Lassell - Fri, 04 Nov 2016 08:14:50 EST ID:FBGYqnRT No.56634 Ignore Report Quick Reply
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>>56529


MOTHERFUCKING ALIEREMS! by George Herbig - Fri, 28 Oct 2016 17:32:07 EST ID:rszf0FN0 No.56560 Ignore Report Reply Quick Reply
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I can't believe no one has posted this yet:
http://www.techtimes.com/articles/183699/20161025/evidence-of-alien-life-2-scientists-say-strange-signals-from-stars-are-from-alien-civilization.htm

TL;DR: We looked at a bunch of stars and found 234 -- that's right, two-hundred and fucking thirty fucking four -- stars that appear to have aliens trying to contact us with optical beams.

Go nuts.
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Roger Penrose - Mon, 31 Oct 2016 05:11:06 EST ID:gmm1Ygns No.56607 Ignore Report Quick Reply
>>56563

>And, presumably, they are using lasers to send the signals -- how else would you send a coherent optical signal over such a great distance?

If I understood it correctly, the supposed signal is not lasers but 'spectral modulation'. Whatever that means, I take it that it's the light from the stars themselves that's supposed to be the signal. The fact that over 200 stars seems to show the same phenomenon either means it's an incredibly advanced interstellar civilization, or an as of yet unknown natural effect.
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Cecelia Payne-Gaposchkin - Tue, 01 Nov 2016 11:19:18 EST ID:eY06FJul No.56610 Ignore Report Quick Reply
This seems a little bit far fetched. There's plenty of astronomical/astrophysical problems still unsolved, so calling it already and saying it's aliens seems a little bit premature.
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George Hale - Wed, 02 Nov 2016 23:34:33 EST ID:6+AQCLDz No.56613 Ignore Report Quick Reply
>>56610
Agreed, probably more likely it's a yet-to-be understood stellar phenomenon, I mean would aliens seriously spend the time and resources necessary to modify STARS just to send messages? There has to be more efficient methods of stellar communication than modifying an entire fucking star. Like just the amount of engineering to construct a device able to modulate a stars light output seems retardedly complex for communication
Thy being said, maybe it is aliens and the fluctuations in signals has to do with some sort of Dyson sphere like device, not ruling it out. Just saying that aliens are PROBABLY not trying to talk to us by fucking with stars' outputs
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Russel Hulse - Thu, 03 Nov 2016 17:34:05 EST ID:eY06FJul No.56619 Ignore Report Quick Reply
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>>56613
Man, I just wanna chill with some ATLiens
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Henrietta Levitt - Thu, 03 Nov 2016 19:37:16 EST ID:rszf0FN0 No.56621 Ignore Report Quick Reply
>>56613
Ways to change the spectral qualities of a star:
-pass a prism in front of it
-pass a planet with a spectrally modulated atmosphere in front of it (fancy prism.)
-drop mass with a different spectrographic profile than hydrogen or helium into it
-ignite mass with the desired spectrographic profile with a probe in the photosphere
-like I said before, just send a laser beam with different spectral properties in the same direction as photons from the star are travelling
All of those things would be trivial for a 1K civilization. Does that mean it is aliens? No. But we can't rule it out just because the method seems exotic. It might be hugely practical. I mean, the only thing they can see about our system is the star too, right? If we wanted to send them a message, and knew nothing about whether they are looking for radio signals or anything, the one thing we know they can see about us is our star, so if it can be used to send a message, why not?


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