Happy World UFO Day, comic fans! We wanted to take the time today to give a shout-out to anyone who, like our many space-loving comic characters, constantly finds themselves looking up at the stars, wondering what - or who - lies beyond.

This blog post is for anyone who ever dreamed of exploring the universe like Spaceman Spiff.

Calvin and Hobbes by Bill Watterson

For those who've camped out on their roof with a telescope, hoping to catch a fleeting glimpse of something extraterrestrial:

Heart of the City by Mark Tatulli

This is for anyone who swears they've seen a UFO.

FoxTrot by Bill Amend

You can't explain it - it was there and then it vanished - but you know what you saw.

Marmaduke by Brad Anderson

For everyone who've blamed aliens for mysterious disappearances and happenings:

Eek! by Scott Nickel

You know exactly where crop circles really come from.

Reality Check by Dave Whamond

You're the first in line to see every alien movie, picturing and preparing for what would happen if aliens ever did invade our planet "...

F Minus by Tony Carrillo

"... And the fate of Earth was in your hands.

Brevity by Dan Thompson

You've often wondered what aliens think of us "...

Frank & Ernest by Thaves

"... And why they've never tried to contact us.

Calvin and Hobbes by Bill Watterson

For more comic UFO sightings, visit our World UFO Day collection.

What are your theories on aliens? Have you ever seen a UFO?