From the top "Aliens better not look for".

X: Famous American physicist Stephen Hawking insists on ending the SETI (Search for Alien Civilizations) project as soon as possible. The fears of the scientist are based on the fact that representatives of a civilization, who managed to catch the calling Earth and appear on the call, with a high probability can show aggression towards the Earthans. According to astronomers, stopping the SETI project makes no sense, since humanity has already had a good time to "inherit" in space. In addition to the radio signals sent into space as part of the SETI project, the Earth has been actively signaling its existence through television, radio and radar over the past 60 years. Astronomers joke that the first American comedies, released in 1951, have already spread to 6,000 star systems. If one of them has a highly developed civilization, it already knows about our existence.

Y: When they see House 2, I think the star of death will come.