IS there any way to have any cheat codes for that?
If you want to have your Sim get abducted by aliens via a cheat code, try this:
Hit CTRL+Shift+C to bring up the cheat box. Type:
boolProp testingCheatsEnabled true
...and hit enter.
Shift-click (hold shift, and click with the left mouse button) on a telescope and choose 'Debug Abduct' and presto, your Sim will get abducted by an alien.