Board index › Topical Discussion › Politics, Philosophy, and Religion

Why haven't extraterrestrials made their presence known?

Page 9 of 14 [ 210 posts ]  Go to page Previous  1 ... 6, 7, 8, 9, 10, 11, 12 ... 14  Next

Previous topic | Next topic

Why haven't aliens made themselves known to us en masse?
They actually have but most people refuse to accept it 25%  25%  [ 20 ]
They think we are not ready for it 5%  5%  [ 4 ]
They think we are cruel/violent and don't deserve to know 9%  9%  [ 7 ]
They have a reason not to disclose that is unclear 6%  6%  [ 5 ]
Aliens have never visited Earth silly 56%  56%  [ 45 ]
Total votes : 81

AspieRogue

06 Oct 2012, 10:47 am

ruveyn wrote:
The ETs (if they exist) live too far away to reach our planet.

The speed of light is the upper bound for moving a massive body everywhere in the cosmos.

ruveyn



Only by brute force.



b9
Veteran
Veteran

User avatar

Joined: 14 Aug 2008
Age: 52
Gender: Male
Posts: 12,003
Location: australia

06 Oct 2012, 11:35 am

nothing can survive for long at the speed of light even if it can travel at the speed of light.
anything traveling at the speed of light can not change direction to avoid a collision, because the news of a pending collision would arrive with the collision at the speed of light.
space is not empty, and even a grain of dust would annihilate any capsule traveling at the speed of light, and a grain of dust would surely be encountered within a very short amount of time when traveling at the speed of light.

but with further thought, maybe the fact that an object is infinitely massive at the speed of light would also mean that it is infinitely dense at the speed of light, and maybe collisions of finite densities with infinitely dense objects would be infinitesimally insignificant. that is a thought to return to when i wake up after i boil my eggs and eat them.

whatever. nothing can be propelled to the speed of light because it would take infinite energy to push an infinite mass (which it would be at the speed of light) to any relative speed, let alone tot the speed of light, and even the universe does not contain infinite energy because if it did then it would be like the energy contained in a universally massive singularity, throughout all points of eternal space. pzzzt szzztz krkrkrktzzz. back to the recharge bay for me.



AspieRogue

06 Oct 2012, 12:17 pm

b9 wrote:
nothing can survive for long at the speed of light even if it can travel at the speed of light.
anything traveling at the speed of light can not change direction to avoid a collision, because the news of a pending collision would arrive with the collision at the speed of light.
space is not empty, and even a grain of dust would annihilate any capsule traveling at the speed of light, and a grain of dust would surely be encountered within a very short amount of time when traveling at the speed of light.

but with further thought, maybe the fact that an object is infinitely massive at the speed of light would also mean that it is infinitely dense at the speed of light, and maybe collisions of finite densities with infinitely dense objects would be infinitesimally insignificant. that is a thought to return to when i wake up after i boil my eggs and eat them.

whatever. nothing can be propelled to the speed of light because it would take infinite energy to push an infinite mass (which it would be at the speed of light) to any relative speed, let alone tot the speed of light, and even the universe does not contain infinite energy because if it did then it would be like the energy contained in a universally massive singularity, throughout all points of eternal space. pzzzt szzztz krkrkrktzzz. back to the recharge bay for me.



Traveling through a space-time tube effectively makes FTL possible, even though the object moving through it is moving slower than light in its own reference frame. Essentially such an entity shortens the distance between 2 parts of the Cosmos.


@Jono: Are you aware that astronomers have succeeded in observing and imaging the event horizon of the black hole Sagittarius A* ? There are also numerous stares and planetoids that are close enough to it and moving the direction such that they will eventually be sucked into it. So no, I am not being facetious.



Gromit
Veteran
Veteran

User avatar

Joined: 19 May 2006
Gender: Male
Posts: 1,302
Location: In Cognito

06 Oct 2012, 12:20 pm

donnie_darko wrote:
I just had a REALLY creepy extraterrestrial dream/experience. I was in my bed sleeping and saw Grey-like beings, though they were green in colour and seemed very much biological, by my bed. Then I woke up in horror and they were gone. I think I was dreaming but who knows if it was real in some way or not.

Try http://www.csicop.org/si/show/abduction_by_aliens_or_sleep_paralysis. Then search for the key words "alien abduction" and "sleep paralysis". This provides an adequate explanation for the experiences reported by people who say they have been abducted, without extraordinary claims.



AspieRogue

06 Oct 2012, 12:30 pm

Gromit wrote:
donnie_darko wrote:
I just had a REALLY creepy extraterrestrial dream/experience. I was in my bed sleeping and saw Grey-like beings, though they were green in colour and seemed very much biological, by my bed. Then I woke up in horror and they were gone. I think I was dreaming but who knows if it was real in some way or not.

Try http://www.csicop.org/si/show/abduction_by_aliens_or_sleep_paralysis. Then search for the key words "alien abduction" and "sleep paralysis". This provides an adequate explanation for the experiences reported by people who say they have been abducted, without extraordinary claims.





I do wonder why the image of those lil grey men came from. They look suspiciously like embryonic humans. Some day in the future, we will find out what they really look like and I hope that when we do we'll be shocked beyond belief.....Something we never could've imagined.



b9
Veteran
Veteran

User avatar

Joined: 14 Aug 2008
Age: 52
Gender: Male
Posts: 12,003
Location: australia

06 Oct 2012, 12:40 pm

AspieRogue wrote:
Traveling through a space-time tube effectively makes FTL possible, even though the object moving through it is moving slower than light in its own reference frame. Essentially such an entity shortens the distance between 2 parts of the Cosmos.


describe in fundamental terms what you are saying or else it is just a catchphrase that sounds smart to people other than me who may read it.

i do allow that you may have a valid point to express but i do not allow that your post is sufficient to express it.

go:



BanjoGirl
Veteran
Veteran

User avatar

Joined: 24 Mar 2012
Age: 42
Gender: Female
Posts: 644

06 Oct 2012, 12:50 pm

I don't believe in extraterrestrials visiting our planet, but I like to observe the sky at night in the countryside. I wouldn't mind to see a flying saucer, I have my moments of romaticism.


_________________
I don't use English since September 2007.


Inuyasha
Veteran
Veteran

User avatar

Joined: 12 Jan 2009
Age: 41
Gender: Male
Posts: 9,745

06 Oct 2012, 6:49 pm

I think it is plausible that Aliens have visited this planet in the past...


However considering we don't have Faster than Light Drives, they probably wouldn't contact us for that reason.

Invasion is highly impractical even with Faster than Light Drives, the mess that would be caused in the process would make it so it wouldn't be worth doing.

Cost vs. benefit takes invasion off the table, giving us faster than light drive would be like handing a car to a teenager that doesn't know how to drive, and so until we develop technology where they end up having to contact us (Faster than Light communications tech or Faster than light drive), they would have next to no reason to contact us.

Also they would rather us bump into them in the middle of space, than them land on our planet and we mistake it for an invasion.



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 88
Gender: Male
Posts: 31,502
Location: New Jersey

06 Oct 2012, 6:52 pm

Inuyasha wrote:
I think it is plausible that Aliens have visited this planet in the past...




There is not an iota of objective physical evidence to support that assertion.

ruveyn



Inuyasha
Veteran
Veteran

User avatar

Joined: 12 Jan 2009
Age: 41
Gender: Male
Posts: 9,745

06 Oct 2012, 7:03 pm

ruveyn wrote:
Inuyasha wrote:
I think it is plausible that Aliens have visited this planet in the past...




There is not an iota of objective physical evidence to support that assertion.

ruveyn


I never said they did anything like went camping, as long as they didn't land or landed on hard rock, and didn't leave behind trash, there would be no physical evidence that would be detectable given we'd be looking for evidence that is a few hundred years old.



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 88
Gender: Male
Posts: 31,502
Location: New Jersey

06 Oct 2012, 7:06 pm

Inuyasha wrote:
ruveyn wrote:
Inuyasha wrote:
I think it is plausible that Aliens have visited this planet in the past...




There is not an iota of objective physical evidence to support that assertion.

ruveyn


I never said they did anything like went camping, as long as they didn't land or landed on hard rock, and didn't leave behind trash, there would be no physical evidence that would be detectable given we'd be looking for evidence that is a few hundred years old.


I am reluctant to believe anyone can move a massive body at or beyond light speed. I will believe it when I see it. In the mean time what you said was rank speculation and has no evidence whatever to support it.

ruveyn



thomas81
Veteran
Veteran

User avatar

Joined: 2 May 2012
Age: 43
Gender: Male
Posts: 5,147
Location: County Down, Northern Ireland

06 Oct 2012, 7:09 pm

ruveyn wrote:
I am reluctant to believe anyone can move a massive body at or beyond light speed. I will believe it when I see it. In the mean time what you said was rank speculation and has no evidence whatever to support it.

ruveyn


'faster than light' isnt the only hypothesised way of moving from one part of the universe to another.

http://en.wikipedia.org/wiki/Wormhole



Inuyasha
Veteran
Veteran

User avatar

Joined: 12 Jan 2009
Age: 41
Gender: Male
Posts: 9,745

06 Oct 2012, 7:12 pm

thomas81 wrote:
ruveyn wrote:
I am reluctant to believe anyone can move a massive body at or beyond light speed. I will believe it when I see it. In the mean time what you said was rank speculation and has no evidence whatever to support it.

ruveyn


'faster than light' isnt the only hypothesised way of moving from one part of the universe to another.

http://en.wikipedia.org/wiki/Wormhole


Scientists have put Warp Drive back on the table as scientificly plausible also.



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 88
Gender: Male
Posts: 31,502
Location: New Jersey

06 Oct 2012, 7:15 pm

Inuyasha wrote:
thomas81 wrote:
ruveyn wrote:
I am reluctant to believe anyone can move a massive body at or beyond light speed. I will believe it when I see it. In the mean time what you said was rank speculation and has no evidence whatever to support it.

ruveyn


'faster than light' isnt the only hypothesised way of moving from one part of the universe to another.

http://en.wikipedia.org/wiki/Wormhole


Scientists have put Warp Drive back on the table as scientificly plausible also.



The energy requirement for Alcubre's gravity warp wave exceed any energy source we can muster by at least ten orders of magnitude. Mathematically possible but practically infeasible.

There is not enough energy in the local cluster to make the thing work. And forget wormholes. They are unstable.

ruveyn



thomas81
Veteran
Veteran

User avatar

Joined: 2 May 2012
Age: 43
Gender: Male
Posts: 5,147
Location: County Down, Northern Ireland

06 Oct 2012, 7:15 pm

Inuyasha wrote:
thomas81 wrote:
ruveyn wrote:
I am reluctant to believe anyone can move a massive body at or beyond light speed. I will believe it when I see it. In the mean time what you said was rank speculation and has no evidence whatever to support it.

ruveyn


'faster than light' isnt the only hypothesised way of moving from one part of the universe to another.

http://en.wikipedia.org/wiki/Wormhole


Scientists have put Warp Drive back on the table as scientificly plausible also.


I would much rather have a 'wormhole generator'.

Even if faster than light is acheivable, it would still in likliehood take millions of years to reach anywhere of consequence.



Inuyasha
Veteran
Veteran

User avatar

Joined: 12 Jan 2009
Age: 41
Gender: Male
Posts: 9,745

06 Oct 2012, 7:17 pm

ruveyn wrote:
Inuyasha wrote:
thomas81 wrote:
ruveyn wrote:
I am reluctant to believe anyone can move a massive body at or beyond light speed. I will believe it when I see it. In the mean time what you said was rank speculation and has no evidence whatever to support it.

ruveyn


'faster than light' isnt the only hypothesised way of moving from one part of the universe to another.

http://en.wikipedia.org/wiki/Wormhole


Scientists have put Warp Drive back on the table as scientificly plausible also.



The energy requirement for Alcubre's gravity warp wave exceed any energy source we can muster by at least ten orders of magnitude. Mathematically possible but practically infeasible.

There is not enough energy in the local cluster to make the thing work. And forget wormholes. They are unstable.

ruveyn


Actually the estimated energy cost for warp drive has gone down substancially also, so it is theoretically feasible.