And where we have been to find life?Our technology started about few houndreds years ago.To say we shoud find something bye now we need around 30mln years from now when we will traverse milions of galactics and we will consider our galaxy our playground.

Be careful that it is a hand before you shake it. I can imagine some awkward moments.

that's the problem of thinking about life.people too much look about life on earth.Hostile for us don't meen hostile for them.Eventualy they can look on Earth and say "how can you live in so hostile enviroment with toxic oxygen,water and such temperatures?You humans are screwd"

Don't forget that probably there are 500mln planets similiar to Earth in terms of temperatures only in our galaxy.I believe there are many many  alien species in our galaxy and i supose that they can be so diffrent that Mass Effect Rakni,Virtual Inteligence,Hanars or Elcors aren't exeptional.

to correct some things: moon stabilizes earths axis not gravity without it = catastrophic climatic consequences. Also without the moon earth rotation would have stopped leading to half year long days and nights extremly fast never ending winds and one huge continental mass at equator everything else would drown.

bigger iron core is not important because of gravity but because of plate tectonics without it no land recycling all land would be washed into the sea also no co2 recycling which would lead to venus like environment

discovering alien radio signals which arent send to contact earth highly unlikely. they become very fast weak and cant be distinguished from background radiation we wouldnt notice earth2 10 lightyears away which is practically on our doorstep .

i believe we will discover life through analysis of exoplanet atmospheres in the next 100 years or find microbes in our solarsystem.

Chances of meeting them personaly are close to 0 in few thousands years to come but as i said our radio and TV the same as theirs travel through space unstoped with light speed in every direction so one day their TV and Radio will reach Earth and on you flat screen you will see some Alien melodrama insted of the next episode of Bold and Beautiful.

If this won't happen in 100 000 years that mean that we are alone in Milky Way but even this don't mean that we are alone out there.

I can bet that in our multiverse every day at least one civilization dies and one is born.At least.

I guess we'd have some real tentacle porn quite soon, provided those aliens aren't hostile.

Way to think. Have we ventured beyond our own solar system? No. If we had, would have have explored enough of this galaxy, let alone others, to know if there's life out there? Probably not. So what makes you think alien life forms have to be much more advanced than us? Sci-fi movies and TV series? Hah.

True, but remember that there are other things that hinder the evolution such as gravity or radiation. It doesn't matter if the planet has all the right ingredients for life, if it is exposed to high enough levels of radiation life can not be possible. As for the gravity thing, a planet/moon with high gravity will hinder the evolution of any life form, forcing it to be either small or big (your Elcor example).

Also, regarding the bolded part, a Virtual Inteligence is not a life form. And it has to be created by someone.

Guys from SETI today have equipment that they could hear the needle falling down on moon(if there would be some gas to transport sound on moon).In space radio signals are steady.Every radio signal can be  distinguished from the background cause all artificial signals look much different.Once we heard artificial sound from 220 light years in distance so maybe someone is looking too and the same as we are they are shooting blind locations  cause it was clearly artificial and non earth,non our solar system for 100% sure.

@brazilianwysnia

sorry but thats incorrect:

radio signals used to transport tv and stuff go in every direction like you said thats the reason why they weaken extremly fast: distance in the power of minus squared with extreme costly efforts like a million radio antenna field we could detect maybe 500 lightyears away radio signals 100000 lightyears away is completly impossible nowadays we wouldnt detect earth2 in 10 lightyear distance the background radiation radiates on almost all frequencies and overlaps possible signals its impossible to filter that on galactic distances. seti searches for messages directly send to earth with the intend to contact us not for et tv.

btw: someone mentioned big bang was caused by colliding nitrogen and hydrogen. thats false nothing existed befor big bang there was nothing to collide no atoms no room no time. and nitrogen came much later anyway it has to be fused in stars after big bang only hydrogen and helium existed.

@brazilyanwisnia


your knowledge isnt precise. seti doesnt hear sounds even if the moon had an atmosphere to transport sound seti couldnt hear anything when a needle falls. the reason is they cant hear sound. sound is just vibrations in the atmosphere and has nothing to do with radiosignals. radiosignals are electromagnetic waves like light. during the big bang a lot of light was created. the universe was so dense that light couldnt shine some day universe started expanding and the big bang light shined through but the universe was mostly hydrogen so some light was absorbed. the rest light streched with the expansion of the universe and became radiosignals aka background radiation which you can hear or see on radio inbetween stations and old tvs without channel our radiosignals drown in background radiation.

the signal you talk about is wow signal which couldnt be localized. it came from sagittarius constellation and came through on hydrogen frequency only frequency missing in background radiation