Is it too late for first contact with aliens?

Every scientific breakthrough has taken time to get going. Knowledge and technology needs to slowly accrue over time until a tipping point is reached. But in some cases, time just isn't a factor. Can we say that some things will never happen because they haven't happened yet? » 6/01/12 1:08pm 6/01/12 1:08pm

How will the government react when we detect alien signals from space?

Some astronomers think detecting an extraterrestrial radio signal is a matter of when, not if. What goes on in the immediate aftermath of such a discovery? Here's what happened the last few times we thought we'd heard from E.T. » 1/27/11 12:30pm 1/27/11 12:30pm