why we haven't meet aliens yet?

1. Signals that can’t be recognize

The first reason I thing that we are not able to recognize their signals. Like if other planets are hospitable to life and there also evolve beings similar to the living things on Earth. 

Otherwise they are different from us that neither of would recognize signals from other. It is possible that human and aliens operate with entirely different senses.

According to astrophysicist Lord Rees “They could be similar us in the face and we just don’t recognize them. We have not reach aliens yet because we are looking something very much like us assume that they at least have something like the same technology.”

Another area is that they might use high communication method those beyond our understanding. Likewise we use radio emission light that nothing more than a white noise.

If people and aliens are extremely unalike, it’s unalike that they we will ever make contact and try to solves the Fermi Paradox.

2. Aliens are moved out of the Universe

According to futurist John smart “At one time aliens are existed in our universe but they moved out of there due to they have advanced technology compare to us”.

Aliens become so evolved they start looking on inner space instead of looking outer space. With development of technology, room-filling technology became smaller while simultaneously growing in complexity and power.

Black hole allow for ideal computing and learning, time travel, energy harvesting etc. But civilization don’t achieve this destiny are failure.

May be other cosmic being working towards their own excellence. Like we emit space broadcast but these types of signals are considered that work of immature civilization and are unlikely to be successfully.

3. Aliens are not interested in Earth

Another reason is that it’s vanity to thought that aliens are interested in us or our planet. In universe there are numbers of more interesting and life supporting may exist and aliens would want to focusing on those planet rather earth.

Aliens are able to communicating across light year would no more care about communicate with us or they have their own superior technology and they are not interested of our measly resource.

If they required any minerals or element why they visit earth? They also find those things all over space. No matter how the intelligent the beings travelling across light year is no easy stunt.

4. We all are surrounded by aliens

In interview in 2014 Former Canadian defense minister Paul Hellyer claimed that 80 different species of alien life live on earth. People are believed that aliens live and work all around us. In which some of them look like as normal humans.

Hellyer is not only person who claimed that we walk with aliens but Paul Davies from Arizona state university and Dr. Robert Trundle from Northern Kentucky University have similar thoughts that we all are surrounded by aliens.

According to these who share the brief the Fermi paradox has answered already, aliens do not exist or human realize it or not but they interact with us on daily basis.

5. We all live in the cosmic boonies

May be aliens life might exist but they do not communicate practical with us due to our planet may too apart from them. Our planet so far away from other inhabited planet that we have simply overlooked.

Mathematical theory percolation describes how things clump in a random environment and the root of this idea come from this theory. According to the percolation theory the universe naturally formed with areas of large clustered growth and few of them growth in outlier positions.

Stephen hawking suggest that we continue to live low instead of make contact with these intelligent beings. Hawking says that if we get alien signal then “we should be wary of answering back instead we have evolved.