We will never find life on other planets ____ we look for it. We need to be ready ____ an asteroid or comet is heading toward the Earth. I would not mind going to Mars ____ i could still communicate with my family. ____ Mars is so far away, it would take weeks to get there. The space program will continue ____ there is enough money for it. we could learn a lot from an alien culture, ____ we could understand each other. Aliens won´t attack us ____ we attack them invasion from space might be improbable, but we should make sure we are prepared, ____ it actually happens. I think we have to be very careful in our search for intelligent life on other planets ____ it is not what we expect. Any message from the stars would take years to reach us ____ they are so far away.

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