Why Aliens have not Visited?

Tom

Tom

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We've had giant radio telescopes up now for 60 years. How many alien messages have they detected? None.

We are alone and it's probably good that we are.

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Wehrkraftzersetzer

Wehrkraftzersetzer

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Tom said:
We've had giant radio telescopes up now for 60 years. How many alien messages have they detected? None.

We are alone and it's probably good that we are.

View attachment 15221
Click to expand...
nikce try - how old is the universe?

how many thousands of years did we pray to ? there are none

how many years did Americans wait fore senseful people to remove the gun religion?
 
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5fish

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Wehrkraftzersetzer said:
how old is the universe?
Click to expand...
It is old...

Tom said:
We've had giant radio telescopes up now for 60 years.
Click to expand...
We have a long way to go to get halfway across the universe...

But with advances in technology and the development of new techniques, we now know the age of the universe is 13.7 billion years, with an uncertainty of only 200 million years.

Imagine the Universe!

This site is intended for students age 14 and up, and for anyone interested in learning about our universe.
imagine.gsfc.nasa.gov imagine.gsfc.nasa.gov
.
 
5fish

5fish

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Tom said:
We've had giant radio telescopes up now for 60 years.
Click to expand...
Every year that goes by means a greater chance we are alone... I think it means the Fermi paradox becomes more true as well...
 
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