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Education & science
Outline
Galaxy
Alien, mysterious, Human
Black
512x512
universe, Alien, galaxy
universe, spaceship, solar
Alien, Human, planet
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Junior Skeptic
Alien, reaching
128x128
abduction, Alien
reaching, Alien
Alien, abduction
Avatars & smileys
Flat
Kameleon Free Pack
Alien
Social media
Significon - Social
Reddit, redditor, Alien
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Handdrawn
Brainy Icons Free — 36 Science and Education Icons
person, hand-drawn, Alien
64x64
Halloween
Photorealistic
Desktop Halloween
bogey, phantasm, flight
256x256
Family & home
3D
Iconka Buddy Set
Gaming & gambling
Free Game Icons
newcomer, disguise, comer
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Mobile apps
Glyph
Free Retina Icon Set
matryoshka, cloak, Cover
60x60
Network & communications
Pixel
16x16 Free Application Icons
16x16
Matryoshkas
matryoshka, Alien
250x250
Alien, matryoshka
Cartoon
Purple monster
300x300
Alien, 15
Alien, 6