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It is pretty unlikely that the earth has ever been visited by UFOS due to the physics laws such as light speed and the size of universe, the closest starts wher

It is pretty unlikely that the earth has ever been visited by UFOS due to the physics laws such as light speed and the size of universe, the closest starts where is likely that there is life, are thousands of years away. For instance, the closest galaxy, Canis Major Dwarf, is 25 thousands light-years away from the earth. So, a trip from a galaxy like that to the earth would take thousands and thousands of years. Even the light coming from this galaxy is the image of 25 thousand years ago. That might be the reason the academia is skeptical about UFOs. Another physical limit is that nothing can achieve the speed of light and even at the light speed a trip to the galaxy would take 25k years.

sharemywin 5y ago
From the article: The most famous example (the one Musk was asked about) occurred when Navy pilots reported a craft resembling a Tic Tac that was moving unlike anything seen in the U.S. arsenal: They said it “wasn’t behaving by the normal laws of physics.” The craft’s movements were, however, typical of both military and civilian UFO reports: Descending from 80,000 feet to 20,000 feet in an instant; stopping in midair and reversing direction without inertial effects; exceeding the speed of sound without generating a sonic boom; and submerging into the ocean
- sharemywin 5y ago
  Not trying to say it couldn't have been some kind of radar mirages or some other explainable phenomenon. But why release it if it had an easy explanation.
- klyrs 5y ago
  https://petapixel.com/2020/04/28/that-navy-ufo-footage-has-an-optical-explanation/ https://petapixel.com/2020/04/28/that-navy-ufo-footage-has-a...
- gwmnxnp_516a 5y ago
  Well, there has been cases where ball lighting phenomena, was misidentified as UFO. (https://en.wikipedia.org/wiki/Ball_lightning https://en.wikipedia.org/wiki/Ball_lightning). What I wanted to say is that based on current known physical laws, it would take an imaginable time for anything from other galaxy to arrive to earth. Unless someone proves that the physical laws are wrong or any life from other galaxy is capable of living more than thousands of years.
  - klyrs 5y ago
    > Well, there has been cases where ball lighting phenomena, was misidentified as UFO. Minor quibble, ball lightning is occasionally classified as an Unidentified Flying Object, before it's identified as ball lightning. The big problem here is with language. The military takes UFOs seriously because they're seriously interested in identifying things before deciding if they need to shoot them. But then when the general public hears "the military takes UFOs seriously," many are operating with the "UFOs are definitely alien aircraft" interpretation.
- sthnblllII 5y ago
  That's not what the video showed. https://youtube.com/watch?v=3viYcYPRdu4 https://youtube.com/watch?v=3viYcYPRdu4 Why the military plays up scientifically illiterate interpretations of these videos is beyond me, and a much more interesting question frankly.
napcat 5y ago
That’s not right. At close to the speed of light the trip is almost instant for the traveller. It is only 25k years for an observer. At speeds close to the speed of light a human could travel to the wedge of the known _universe_ in a lifetime.
weare138 5y ago
Interstellar travel is theoretically possible. If we have advanced far enough to theorize about it, then it's not outside the realm of reason that a hypothetical civilization millennia more advanced than us would be able to develop the technology. The universe is so unfathomably large and the building blocks for life so common there is no way we are the only life in the universe. It just defies logic. In fact I'd bet money we'll find life in our own solar system within our lifetimes. https://www.youtube.com/watch?v=Vk5bxHetL4s https://www.youtube.com/watch?v=Vk5bxHetL4s
- api 5y ago
  Interstellar travel is theoretically possible with technology contemporary with the Beatles. Look up Project Orion. But wouldn’t we see them if they were here? It’s called space for a reason. It’s hard for the human mind to wrap itself around just how vast even our own solar system is, how many solid bodies there are, etc. If they maintained relative radio quiet and used only directional signals or lasers you could hide a sizable alien settlement in our solar system and we’d be unlikely to find it unless we got lucky. Space is just so damn big. SETI has checked a few grains of sand on the beach and found nothing and you now have people making tortured arguments about the Fermi paradox and great filters. We have barely looked, and given things like Project Orion we ought to pay more attention to our own cosmic back yard. The percentage of even our own solar system we have explored is miniscule.
- gwmnxnp_516a 5y ago
  Surely there may be life outside elsewhere on the universe, but the problem is the size of universe and the limit of speed of light, even for a signal (radio wave - electromagnetic wave), that travels at light speed, sent from Mars to Earth by some Nasa device, there is a delay of more than 5 minutes! So if any form of advanced life send a signal to us, from the nearest galaxy, it will take more than 25 thousands years to arrive. That is the reason why is pretty unlikely that anyone in our life time will ever see an UFO or contact an UFO or extra terrestrial entity.

sharemywin 5y ago

From the article: The most famous example (the one Musk was asked about) occurred when Navy pilots reported a craft resembling a Tic Tac that was moving unlike anything seen in the U.S. arsenal: They said it “wasn’t behaving by the normal laws of physics.” The craft’s movements were, however, typical of both military and civilian UFO reports: Descending from 80,000 feet to 20,000 feet in an instant; stopping in midair and reversing direction without inertial effects; exceeding the speed of sound without generating a sonic boom; and submerging into the ocean

sharemywin 5y ago
Not trying to say it couldn't have been some kind of radar mirages or some other explainable phenomenon. But why release it if it had an easy explanation.
klyrs 5y ago
https://petapixel.com/2020/04/28/that-navy-ufo-footage-has-an-optical-explanation/ https://petapixel.com/2020/04/28/that-navy-ufo-footage-has-a...
gwmnxnp_516a 5y ago
Well, there has been cases where ball lighting phenomena, was misidentified as UFO. (https://en.wikipedia.org/wiki/Ball_lightning https://en.wikipedia.org/wiki/Ball_lightning). What I wanted to say is that based on current known physical laws, it would take an imaginable time for anything from other galaxy to arrive to earth. Unless someone proves that the physical laws are wrong or any life from other galaxy is capable of living more than thousands of years.
- klyrs 5y ago
  > Well, there has been cases where ball lighting phenomena, was misidentified as UFO. Minor quibble, ball lightning is occasionally classified as an Unidentified Flying Object, before it's identified as ball lightning. The big problem here is with language. The military takes UFOs seriously because they're seriously interested in identifying things before deciding if they need to shoot them. But then when the general public hears "the military takes UFOs seriously," many are operating with the "UFOs are definitely alien aircraft" interpretation.
sthnblllII 5y ago
That's not what the video showed. https://youtube.com/watch?v=3viYcYPRdu4 https://youtube.com/watch?v=3viYcYPRdu4 Why the military plays up scientifically illiterate interpretations of these videos is beyond me, and a much more interesting question frankly.

napcat 5y ago

That’s not right. At close to the speed of light the trip is almost instant for the traveller. It is only 25k years for an observer. At speeds close to the speed of light a human could travel to the wedge of the known _universe_ in a lifetime.

weare138 5y ago

Interstellar travel is theoretically possible. If we have advanced far enough to theorize about it, then it's not outside the realm of reason that a hypothetical civilization millennia more advanced than us would be able to develop the technology. The universe is so unfathomably large and the building blocks for life so common there is no way we are the only life in the universe. It just defies logic. In fact I'd bet money we'll find life in our own solar system within our lifetimes. https://www.youtube.com/watch?v=Vk5bxHetL4s https://www.youtube.com/watch?v=Vk5bxHetL4s

api 5y ago
Interstellar travel is theoretically possible with technology contemporary with the Beatles. Look up Project Orion. But wouldn’t we see them if they were here? It’s called space for a reason. It’s hard for the human mind to wrap itself around just how vast even our own solar system is, how many solid bodies there are, etc. If they maintained relative radio quiet and used only directional signals or lasers you could hide a sizable alien settlement in our solar system and we’d be unlikely to find it unless we got lucky. Space is just so damn big. SETI has checked a few grains of sand on the beach and found nothing and you now have people making tortured arguments about the Fermi paradox and great filters. We have barely looked, and given things like Project Orion we ought to pay more attention to our own cosmic back yard. The percentage of even our own solar system we have explored is miniscule.
gwmnxnp_516a 5y ago
Surely there may be life outside elsewhere on the universe, but the problem is the size of universe and the limit of speed of light, even for a signal (radio wave - electromagnetic wave), that travels at light speed, sent from Mars to Earth by some Nasa device, there is a delay of more than 5 minutes! So if any form of advanced life send a signal to us, from the nearest galaxy, it will take more than 25 thousands years to arrive. That is the reason why is pretty unlikely that anyone in our life time will ever see an UFO or contact an UFO or extra terrestrial entity.