Many people have had what they believe are encounters with UFO's. Some involve huge objects with multicolored lights; others involve tiny ball-shaped, dome-shaped, or cigar-shaped objects zipping through the sky. A few involve interactions with scaly or huge-eyed aliens. Are these real stories of UFO sightings? In most cases, even the story tellers aren't sure!

01 of 31 Abduction in Quebec While on vacation, a man dreams of an alien abduction. The next night, he discovers a tiny scar in the shape of an arrow pointing upwards!

02 of 31 Alien Creature at the Window An expert in aliens and monsters sees a horrible face at the window. When he checks, he finds the creature's imprint. Was it a monster or an alien?

03 of 31 Alien Intentions A woman recalls a lost memory of an alien abduction and connects it to more recent encounters with evil "gray people" who stalk her to this day.

04 of 31 Alien in the Tub A child wakes up to discover an alien exploring the bathroom. Could the alien really be simply curious about shampoos, soaps, and wash cloths?

05 of 31 Aliens Took My Baby A woman tells of scale-covered aliens who impregnated her and took her child -- all in single night. She describes her doctor's incredulous response when she says "I've never been pregnant." Months later, she watches a TV show about UFO's in which she sees the very aliens who attacked her.

06 of 31 Big Round Blue UFO A huge, round, blue object flies silently over a group of children. Could it have been a UFO?

07 of 31 Black Friday UFO Sighting A man sees a strange shape in the sky, but when he points it out to his niece she can't see it!

08 of 31 Coyotes and UFOs After scaring off a group of coyotes on a dark night, a boy discovers a UFO in a field. Just a few days later, workers in the area discover a circular shape where the UFO has been.

09 of 31 Crippled UFO A man recalls an afternoon when a group of people, while picking tomatoes, observed a flying saucer. The saucer was clearly in distress -- but within minutes it had disappeared.

10 of 31 Fort Gordon UFO A soldier working on a top-secret project tells of a UFO that passed overhead. It disappeared within seconds, though he believes he saw it at least one more time.

11 of 31 Invisible Barrier at Sea A group of friends head out to sea to fish for mackerel. One of the group cast his line, only to hear a strange ping and see the line fall into the sea. What did he hit? Could it have been an invisible UFO?

12 of 31 The Mad Scientist and Ghost Light of Patrick Road A group of friends start out to find "monsters" supposedly created by a mad scientists. While they don't find the creatures, they do find eery flickering lights and a mysterious observer.

13 of 31 Margate UFO A young girl and her friend go camping on the beach when they observe what looks like a UFO hovering and landing. The next day they visit the landing site and find that all the plants have died.

14 of 31 Mysterious Light Grid Two friends are driving along when they see that a usually-empty valley is engulfed in huge, multicolored lights. The following day, the valley is bare again.

15 of 31 Paralyzed by a UFO A man tells two stories of UFO's. In the first, a strange ship is pursued by military aircraft. In the second, a woman is briefly paralyzed by a passing beam of light from an unknown source.

16 of 31 Pestered by a UFO A bright streak of yellow light whooshes over a man's head -- for the fifth time in his life.

17 of 31 Susquehanna Sprinter Two groups of hikers spot a strange man who can run like the wind. Could he have been an alien?

18 of 31 Ridiculous UFO Cover-Up A group of children see a strange, blinking flying saucer. Later, the story is corroborated by a news story -- but in the story the object is described as a Russian satellite. Was it really a UFO?

19 of 31 Spectacular UFO Sighting A man witnesses a spectacularly beautiful light show coming from an airship of some sort in the Nevada desert. Years later, he reads a similar account that took place on the same night -- but thousands of miles away!

20 of 31 Triangular UFO in Texas A girl and her boyfriend observe a three dimensional, wedge-shaped UFO lighting up the night. When she returns with her father, the UFO is gone.

21 of 31 UFO Affected My Vision A woman who has had multiple UFO experiences photographs UFO's that seem to be following her telepathic instructions. The next day, she has a strange visual experience at the Department of Motor Vehicles -- and she is certain the two events are linked.

22 of 31 UFO By the Old Red Barn A young boy spots a mysterious spinning disk popping out from behind a barn. When he follows it by bicycle it continues to dart in and, playing a game of "hide and seek."

23 of 31 UFO Over Chico A man and his cousins witness a spinning, seamless UFO. Just two minutes later, it disappeared.

24 of 31 UFO Over Sri Lanka A man observed a small, slow-moving UFO -- and later hears of nearby sightings of crop circles and other unexplained phenomena.

25 of 31 UFO Over Tacoma A man and his brother observe a blimp-shaped object flying through the sky. Was it a ghost blimp, a cloud, or a UFO?

26 of 31 UFO Over the Mountains A boy watches a small metallic object shoot through the air and disappear.

27 of 31 UFO Should Have Hit My House An unhappy boy looks out the window to see a dome-shaped object shooting toward him. He falls backward in fright -- and the object disappears.

28 of 31 UFO Sighting Begins Strangeness A single mom observes an object with multiple lights flying across the night sky. Later, she hears the sound of its engines -- but is too frightened to open the curtains and peek out! Later, she notices that both her clock and watch have stopped at exactly the same time.

29 of 31 Unidentified Buzzing Object Sightings A strange, ball-shaped object buzzes and moves up and down as a group of boys watch.

30 of 31 Witch or Aliens? Circular lights in the sky and strange witches in the woods make this observer a believer in the paranormal.

31 of 31 Zipping Point of Light A strange white dot zipping through sky is never explained.