UFO designs

[Super Nova]

[Rorschach]

[Rorschach]

[AiA in Atlanta]

If there is an intelligence that can travel across space they probably also have the technology that would allow them not to have to physically make the journey ... they can do it from the comfort of their home so to speak.

[Super Nova]

If there is an intelligence that can travel across space they probably also have the technology that would allow them not to have to physically make the journey ... they can do it from the comfort of their home so to speak.

You mean an intergalactic NBN.

[AiA in Atlanta]

Yeah, maybe. The technology would be invisible, at least to us. Seems UFO/Aliens are anthropomorphised just like God so we imagine them traveling through space in ships when in fact it may be very, very different.

[Super Nova]

The issue will be for us

If anything could be bothered to visit us I would expect it would be to colonise the planet. Why else do we explore.... expansion is a good survival trait.

Visiting just to say hello will not be on.

If the laws of physics prevent warping of space to reduce distance travelled or faster than light travel cannot be achieved, then even if they are made of pure energy and not matter they would be investing a lot of time and effort just to visit here. OR, they travel at the speed of light and time will appear to have stopped for them while they travel.... that's a thought.

We have not been visited. I expect we never will be.

See the link below even though I think our understanding has changed (it maybe a little out of date but the principle and logic still applies I think) and there maybe more habitable planets than firs thought based on recent discoveries. Also it is a Christian site.... but the paper is still valid. God said so.

I nice paper stating what most of us known is here:
http://www.godandscience.org/apologetics/ufo.html

The conclusion is:

This paper has shown that the probability of aliens visiting the earth is virtually zero. Potential aliens in other galaxies are too far away to detect our presence (since radio signals will not reach them for millions of years) and the travel times make intergalactic travel impractical. Recent scientific studies demonstrate that the universe is much less hospitable to life than it would seem from our unique Solar System and planet. A large proportion of our galaxy is uninhabitable. Parts of it would not even be expected to produce rocky planets. The highly unlikely collision that produced our large moon prevented the earth from being a waterworld.5 It also ejected the majority of our primordial atmosphere, which prevented the earth from going through a runaway greenhouse effect similar to what happened to Venus, our sister planet. Finally, our Solar System is unique in that it has large gas giants located only in the outer regions. Other systems discovered have gas giants located either near their star or in both inner and outer regions of their planetary system. The presence of gas giants near the star would eject any rocky planets from orbit. The presence of gas giants in the outer region of planetary systems is absolutely necessary for the survival of advanced life forms. Without Jupiter, the number of catastrophic collisions that the earth would experience would be at least 10,000 times greater. So instead of suffering massive species extinction events every 100 million years, the earth would experience these events every 10,000 years.6 Only bacteria and other simple life forms would be able to survive this kind of bombardment - no advanced life could ever form in the vast majority of planetary systems. These problems indicate that there would be no more than 150 advanced civilizations within our galaxy - and, more likely, we are completely alone in our galaxy.

Lights in the Sky & Little Green Men: A Rational Christian Look at Ufos and ExtraterrestrialsInterstellar space travel is much more difficult than indicated in movies and television series, such as Star Trek and Star Wars and the like. First, it is not possible to travel at speeds greater than the speed of light - the physics of the universe prevent it. Second, traveling near the speed of light is impractical for biological organisms. Collisions with particles even the size of a grain of sand would be catastrophic. An even worse problem is that the light from ordinary stars would be blue-shifted all the way to the gamma end of the spectrum when traveling near the speed of light. These gamma rays would destroy all biological life - even if it were in suspended animation (if that were possible). In essence, these problems would restrict the speed of travel to well below the speed of light. The most optimistic estimate for the presence of extraterrestrial civilizations would put them 2000 light years apart. With no intermediate habitable stopping points, space travel over this distance would be impractical. So, even if we are not alone in this galaxy, it would be highly unlikely that any extraterrestrial civilization could have visited us. What about all the "evidence" for extraterrestrials and UFOs? See the links below for more information.

[AiA in Atlanta]

But to say aliens would colonize us or eat us is more anthropomorphism ... humans do those things, yes, but non-humans? How would we know that? And if they have the technology to visit us they may have evolved out of that sort of behaviour ... either we are on the leading edge of evolution and are the most advanced life forms in the Universe or we are not ... and they know about us.

[Super Nova]

But to say aliens would colonize us or eat us is more anthropomorphism

Not to eat us but to colonise the planet. maybe we could co-exist but I would expect this would be a new outpost for their race.

That would be a major risk for us.

If we conclude that all life evolved then survival of the species is a key driver of the species... even if it is advanced. Even if they are benevolent to us, they will probably see this as a cool place to set-up camp.

[AiA in Atlanta]

If there are beings that can span galaxies then they would have had possibly millions of years head start on humans ... would it not make sense that they evolved out of violence? Maybe they would be like gods themselves to us. Somehow I think they would not need to colonize Earth, that they would not need anything at all ...