Aliens

it's not a problem yet buy my question is : how can i see aliens in seasons ep what should i do for this

I'm no expert on this, but I've formed some impressions of my own. When I first started playing I found a space rock and my house would be visited nightly by an alien, but never abducted. When I built my "celeb" house, I sold the space rock and I stopped receiving visits. So, I think - and I'm sure someone will correct me if I'm wrong - that you need to find a space rock to be visited by aliens.

Really is it just a space rock ?

I've had lights hovering over some of my Simmies houses before and then a few nights later an alien has randomly visited them. I'm still trying to get a male sim aducted though