Revised Matchups
Offensive:
2x: Fighting, Psychic, Fairy, Space, Fire
Fighting can't protect you from a plasma weapon, Psychics wouldn't be able to understand aliens, Those from space wouldn't believe in fairies and fairies need belief to exist, Aliens would be around the same strength, and Fire can't exist in space.
1x: Normal, Dark, Water, Flying, Grass, Rock, Ground, Heart
.5x: Bug, Electric, Time, Ice
Bugs can survive in Space for a while, Plasma is what Electricity is made of, Time is considered the 4th dimenion of space, and Ice isn't really bothered by space.
0x: None
Defensive:
2x: Bug, Electric, Poison, Space, Grass
Bugs and plants carries diseases, which aliens wouldn't be used to, Electric, Space, and Ice, See above, and Poisons wouldn't likely be the same on an alien planet.
1x: Dark, Flying, Ground, Heart, Dragon, Fairy, Psychic, Normal, Fighting
.5x: Time, Fire, Fairy, Heart, Ice
Time, Fire, and Fairy, See above, Ice can't make something extremely cold even colder, and your heart wouldn't be able to survive in space.
0x: none