Who here believes in UFO'S?

From earth it would look like it has taken thousands of years to get to the star where on the ship it has only taken 4.2 years. That show I understand it.
 
From earth it would look like it has taken thousands of years to get to the star where on the ship it has only taken 4.2 years. That show I understand it.

How could a ship traveling at say 99.9999999% of the speed of light take 10,000s of thousands of years to get to the nearest star? when it only takes 4.2 years for light to get there.

From and earths perspective it would take say 4.200001 years to get there.
 
Sorry seems like yu are right.

[edit]How far can one travel from the Earth?
Since one can not travel faster than light, one might conclude that a human can never travel further from the earth than 40 light years, if the traveler is active between the age of 20 and 60. So a traveler would never be able to reach more than the very few solar systems which exist within the limit of 20-40 light years from the earth. But that would be a mistaken conclusion. Because of time dilation, he can travel thousands of light years during his 40 active years. If the spaceship accelerates at a constant 1G, he will after 10 years reach speeds close to the speed of light, and time dilation will increase his lifespan to thousands of years, seen from the reference system of the Solar System, but his subjective lifespan will not thereby change. If he returns to the earth he will land thousands of years into the future. His speed will not be seen as higher than the speed of light by observers on earth, and he will not measure his speed as being higher than the speed of light, but he will see a length contraction of the universe in his direction of travel. And as he turns around to return, the Earth will seem to experience much more time than he does. So, although his (ordinary) speed cannot exceed c, his four-velocity (distance as seen by Earth divided by his proper (i.e. subjective) time) can be much greater than c. This is similar to the fact that a muon can travel much further than c times its half-life (when at rest), if it is traveling close to c.[22]
I hate relativity.
 
He does not though. i need a brick wall:D

Right are we in agreement for a person on earth it takes 4.2 years for light to get to the nearest star?

If so how can it also take 4.2 years for the person on the ship? this is where the time dilation comes in.

The person on the ship would look out and everything would be going extremely quick exterior to the ship.

Where as someone looking into the ship the person on the ship would be going in super slow motion. This is the dilation effect.

light is being measured at 4.2 years by someone on earth, not by someone traveling at a extremely fast speed.

The key don't forget is it takes 4.2 years from the earths perspective.

Are not the ship and the person within the ship both travelling at the same speed.

So if the ship is moving fast to the outside observer, so is the person inside the ship.

It is only the subjective time compared between the observer (person on earth) and the object(person on the ship) that is effected by the time dilation.

So if it takes 4.2 years by the observers perspective for the ship to travel that far, it has only taken a couple of hours on the ship.

That would surely mean that the ship is travelling faster than the speed of light, would not the 4.2 years be the ship time if it were travelling at the speed of light and the observers time due to time dilation would be 4.2x60.2 which would give a period of 252.84 years passing back on Earth?

by all means correct me, I am going by the table you shown me earlier.

EDIT: I have seen Acids quote in his post, I see how it works now
 
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Are not the ship and the person within the ship both travelling at the same speed.

So if the ship is moving fast to the outside observer, so is the person inside the ship.

It is only the subjective time compared between the observer (person on earth) and the object(person on the ship) that is effected by the time dilation.

So if it takes 4.2 years by the observers perspective for the ship to travel that far, it has only taken a couple of hours on the ship.

That would surely mean that the ship is travelling faster than the speed of light, would not the 4.2 years be the ship time if it were travelling at the speed of light and the observers time due to time dilation would be 4.2x60.2 which would give a period of 252.84 years passing back on Earth?

by all means correct me, I am going by the table you shown me earlier.

No this ship / people on it is moving slow to the outside observer.
Everything is exterior to the ship is moving very fast for in side the ship observer.

Again mixing the observer from earth and the traveler up, you should have divided instead of multiplied.
 
No this ship / people on it is moving slow to the outside observer.
Everything is exterior to the ship is moving very fast for in side the ship observer.

Again mixing the observer from earth and the traveler up, you should have divided instead of multiplied.

Yeah, that's cool, I just read the quote that Acidhell posted and saw my mistake. Basically then the subjective time for the Observer on Earth is 4.2 years, and the subjective time for the traveller is a few weeks?

Relativity is a nightmare.:)
 
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Sadly my physics knowledge is long gone thus my input to this thread must again be a photo and opinion.

I don't as much believe in ET UFOs as belief requires faith, I'd say instead it's definitely a possibility that some UFOs are of ET origin.

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Sorry haven't replied to any of you, i flashed my 6950 earlier and it all went Pete tong i managed to fix it despite not having a switch which i assumed it did.Then my sound stopped working (my headphones and speakers) for some reason my computer is telling me they are not plugged in.
Wasn't expecting this many replies either but you will have to forgive me as i am away to bed as i am nearly snapped after trying to get sound back for 3/4 hours.
 
I do believe in UFOs.

I don't believe in anything. I don't like the idea of thinking something is true without any reason to do so. I prefer to at least try to judge the evidence and thus not need belief.

There undoubtably are UFOs, i.e. things in the air that are unidentified. That doesn't mean they are alien in origin. They could be natural. They could be of human origin and either a hoax or a secret.

Given the size of the universe and the potential of other intelligent, and even more advanced lifeforms, I do believe that there has to be some other life out there with the capability of far superior space exploration to what we have.

Quite possibly so...but then how likely would it be that an attack by them could be driven off by humans in 1942? If they had spaceships capable of easy interstellar flight, their technology would be further beyond ours than ours is beyond flint tools.

If such a civilisation did exist, why would they come here and sort of let themselves be seen but only in ways that can't be clearly seen or proven. Are they all adolescents messing with alien primitive people (i.e. us) for a laugh? What else would make sense?

Then there's the scale of things.

Assume for the sake of argument that an alien civilisation has the will, resources and technology to sustain an exploration fleet (and all the required supporting resources) large enough to explore 10,000 stellar systems every year, regardless of how far away they are from the civilisation's home systems (such a people would almost certainly have colonised a few at least). That's about 28 complete stellar systems explored per day, every day, no matter how far away from base. It would take them about 20 million years to explore just this galaxy. Given that, the chance of them having noticed humans at all is miniscule - even if they have looked here, it would almost certainly have been before humans were noticeable on a quick look through the solar system.
 
There wAs a time when scientists said the human body couldn't travel faster then 10mph in a vehicle as our bodies couldn't take the strain. . .

That wasn't scientists.

On this matter of saying you cant go faster then light is rubbish. The speed of light is just a speed, just like sound it can be broken.

No it isn't and no it can't. It appears to be a constant, not simply the speed at which light travels. It's a bit of a misnomer to call it the speed of light because it isn't really about light. It is not "just a speed". It appears to be the maximum possible speed. There's always the possibility that the current theory is less than completely accurate and superluminal speeds might be possible, but it certainly isn't "just a speed" that can be exceeded by using a more powerful engine.
 
I don't believe in anything. I don't like the idea of thinking something is true without any reason to do so. I prefer to at least try to judge the evidence and thus not need belief.

There undoubtably are UFOs, i.e. things in the air that are unidentified. That doesn't mean they are alien in origin. They could be natural. They could be of human origin and either a hoax or a secret.

That depends on the definition of UFO, and where that UFO could be.

Unidentified Flying Objects that are alien in Origin on Planet Earth? No I dont believe in that until I have seen it.

Unidentified Flying Objects with an alien origin that we are yet unable to observe in any other part of the Universe? Given the size of the universe and the possibility of there being another lifeform somewhere capable of building spaceships.

I didnt specify that I believe in alien UFOs on Earth, I dont until I see it. That doesnt rule out that I strongly believe that there are more advanced lifeforms somewhere in the universe that are capable of at least the same, if not better space travel than we are, but they are most likely too far away to ever reach us, or for us to reach them.
 
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For the OP.

The Phoenix lights: These were proven to be flares ejected from military aircraft during a routine training exercise - this is fact and undisputed.

Rendleshem Forest: More to this than meets the eye imo. On the one hand you have reports about US Airmen actually touching the UFO and others who state it was just the nearby lighthouse casting light/shadows in the forest.

Foo Fighters - Nope. Static electricty.

The older paintings depicting objects in the sky - I'm not convinced at all. They could be any manner of 'objects' and are perhaps the defining description of what a UFO is - unidentified! Meteor, comet, swamp gas - impossible to tell.

Do I believe in UFO's? Yes. However there is so much disinformation, fakes, and diluded, pschologically disturbed people around that make investigating such phenomena near impossible. Much the same as religeon.;)
The thing is were are still in the infancy of scientific discovery so for us to comprehend or even attempt to understand faster than light/inter dimensional travel is like expecting a worm to understand the theory of relativity.
 
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You would be very closed minded and egotistical to say that we are the only planet in the universe to sustain life on any scale. Hell, they'll probably find microscopic alien life within our own solar system at some point in time.
 
All those 'sightings' are total rubbish. Same as ghost 'sightings'.

So some beings from another planet which are MILLIONS of light years away are going to fly over here in a metal disc and allow themselves to be seen?

That would indicate the youth 'aliens' go planet 'buzzing' just to cause unrest? If we were to be visited it would not be done like this.
 
Imagine for a moment that there are monkeys living on the moon, significant but compared to us, lifeforms of inferior intellegence by a fair margin.

Would we care if they saw us?
 
I'm not sure I believe in all the sightings being reported as most can be ruled out easily.

Do I believe in the existence of extra terrestrials?

Yes, there are billions of planets out there ours cannot be the only one with life on it.

Do I believe that they visit earth?

Possibly but very unlikely, they would not travel all that distance just to buzz a few commercial jet liners or poke and prod at some backwoods wierdo that nobody will believe.

To be perfectly honest I firmly believe that if aliens ever did come to visit our planet, given the current paranoid state of most countries, they would be blown out of the sky before they could even say hi.
 
No, but I think that we would be interested in examining those monkeys and abducting some for experimentation :p

lol.

Jesting aside I think there are more dodgy abduction reports than there are UFO sightings. Some dodgy UFO sightings can just be mistaken identity. Most (all?) abductions are a simply cry for attention. However, I guess its hard not to assume there have been some abductions if the UFO phenomena is to be believed. Both logically go hand in hand.
 
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