Reasons you believe ETs are not visiting Earth

[Filakius]

THE ALIENS ARE COMING!!!
Little green men, sneaking into our atmosphere to scare Bubba while fishing at 3am, after a successful night of butt probing.
And no one see's it but a few, and didn't get a photo. Hmm, sounds legit right?

I'd like to hear from the sceptics what makes you think all these stories are myths, lies, mis-ID's or brain failures.

Example:
1) NASA, military and governments would detect ET activity

 

[August]

Maybe the UFOs 'are' the aliens. Maybe another form of life from out there or maybe high altitude life forms we do not know of. So while some believe that UFOs are bunkum its possible we have missed the point that these things are actually alive. Then there is also the supernatural hypothesis.

 

[nivek]

It's only logical and reasonable to assume this planet has been visited by outsiders, if NASA had the means and the technology they would be sending astronauts off to all of the goldilocks planets that have been discovered, so why not aliens?...

 

[Dundee]

The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area about 2.6 arcminutes on a side, about one 24-millionth of the whole sky, which is equivalent in angular size to a tennis ball at a distance of 100 metres.[1] The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.[2][3]

The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe.


What is the average number of stars in a galaxy?
And to answer “how many stars are there,” we must limit the discussion to what we can observe. Astronomers estimate that the observable universe has more than 100 billion galaxies. Our own Milky Way is home to around 300 billion stars, but it's not representative of galaxies in general.


Thats a lot of places for ET to Hide

 

[August]

View attachment 1034

The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area about 2.6 arcminutes on a side, about one 24-millionth of the whole sky, which is equivalent in angular size to a tennis ball at a distance of 100 metres.[1] The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.[2][3]

The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe.


What is the average number of stars in a galaxy?
And to answer “how many stars are there,” we must limit the discussion to what we can observe. Astronomers estimate that the observable universe has more than 100 billion galaxies. Our own Milky Way is home to around 300 billion stars, but it's not representative of galaxies in general.


Thats a lot of places for ET to Hide

Lots of places . I hope they have trans warp drive to cover those immense distances.

 

[Dundee]

Lots of places . I hope they have trans warp drive to cover those immense distances.

Who would know, in my opinion I don't think that (if) when we finally crack the secret to long distance space travel it will have nothing to do with going fast.

 

[ImmortalLegend527]

THE ALIENS ARE COMING!!!
Little green men, sneaking into our atmosphere to scare Bubba while fishing at 3am, after a successful night of butt probing.
And no one see's it but a few, and didn't get a photo. Hmm, sounds legit right?

I'd like to hear from the sceptics what makes you think all these stories are myths, lies, mis-ID's or brain failures.

Example:
1) NASA, military and governments would detect ET activity

Reasons you believe ETs are not visiting Earth

Because mathematically its impossible to find earth, it would be like hitting the lottery every day for the rest of your life.Plus, they made sure that when they made you here on earth that they would not find out which planet your at this time.

 

[CasualBystander]

Because mathematically its impossible to find earth, it would be like hitting the lottery every day for the rest of your life.Plus, they made sure that when they made you here on earth that they would not find out which planet your at this time.

Earth only puts out EM emissions with a max power of about 20 KW mostly omnidirectional. That is what it takes to reach Voyager with highly directional antenna. Voyage is around 19 light minutes away.

What is received at Proxima Centauri (the closest star) wouldn't even punch through the noise floor. You would need an effective aperture (back when I finish the computation).

The only way Aliens will find earth is if they run into it by accident or are forced to do an emergency landing.

 

[CasualBystander]

You would need an effective collection aperture (back when I finish the computation).

Larger than Neptune, something in the 30,000 km range.
And that is based on the Voyager distance with a highly directional source.

Perhaps something a couple of multiples of Jupiter could pick up the omnidirectional stuff.