Aliens abducted my male Sim. I was surprised, actually. That had been the first time it happened since I enabled Seasons again. I looked up a mod to stop abductions and now testing it to see if it works.
The alien abductions are few and far between from what I understand without the mod, so it may take a bit to see if the mod works.
-- After playing with the mod, I feel it's safe to say it works well. I haven't seen any aliens in my save since!! Yay!!
I've read where if you're trying to Avoid the Noid, err... I mean alien abductions is to not use the telescope either at all or at night, not sure which or if it's both. Get rid of space rocks if you have any. And uhm.... Don't stay up all hours of the night. lol *Blush*
– More info on Aliens and avoiding them:
It's rare to have an Alien spawn without triggering it. Using the telescope, having high logic and meteor stones on your lot increase your chances. Otherwise its super rare. And your sim will never be impregnated without these circumstances. They will just visit outside your lot late at night and then leave if you don't interact with them. They wont move into town or anything.
Here's a mod that has the options of no alien abductions.
More/Less Alien Abductions
https://modthesims.info/d/493379/more-less-alien-abductions.html