There's alot story hanging for accurate answer for this kind of question.
What is the main propose is that true the Alien come visit us here on Earth for their study? or Want to conquer Earth from us?
On the recent conferences organized by US Science Association expose that could be over 100billion Earth from Billion of Solar system exist.
Plus, Today as i read from Dr. Alan Boss articles scientist from Carnegie Science Institute told maybe we could found alive creature same as on earth back to 4billion years ago.
Till to date the most high-technology telescope could only tracked over 300 Planet that similar as Earth outside our solar system.
Speech Of An ALIEN??
Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.
Judge for yourself what the voices are saying, it is a very bizarre anomaly but very much worth investigating.
1) Download and save the original WAV file from NASA/Cassini website:
2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..
and there it is, speech patterns.
How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
P/S ... Only God Knows Everything...