Aliens are any living creatures that are not originally from Earth. They could be anything from simple bacteria to intelligent life; however, there was no concrete evidence to support life outside of our planet as of now. Scientists had allegedly found in an asteroid what could be Martian bacteria.
Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an "extraterrestrial" or "alien" (or, to avoid confusion with the legal sense of "alien", a "space alien"). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.
The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. In 2015, "remains of biotic life" were found in 4.1 billion-year-old rocks in Western Australia
Many cryptozoological creatures, such as the Dover Demon resemble creatures that could be from another planet, while some groups assume others, including the Sasquatch and Chupacabra, are in fact aliens, as an explanation for why they are so hard to find.
- Main article: Atmospheric Beasts
- Main article: Atmospheric Jellyfish
Atmospheric Jellyfish are flying jellyfish that have been sighted floating in the atmosphere. It is mostly known because of its appearance in The Secret Saturdays. According to British scientist, Dr Maggie Alderin-Pocock, the aliens likely exist; the aliens are real, they are "huge jellyfish" that float around, so this may be a hovering hydrozoa. The Atmospheric Jellyfish are a type of UFO as well.
- Main article: Air Rods
Air rods, also called "flying rods" and "sky fish," are something like crop circles in that even the skeptics admit they exist. The only question is what they really are. Invisible to the eye, they are picked up by cameras all over the world. Are they living creatures, alien probes, or some sort of 3D electromagnetic smudge? To believers in the cryptozoology-based theory of air rods, air rods are probably living creatures, and they are possibly related to older stories of atmospheric beasts. To skeptics, air rods are bits of flying debris, insects or birds filmed under unusual conditions, or blips on film that are due to errors in film processing.
- Main article: UFO
In cryptozoology, the term UFO–or unidentified flying object–refers to a suspected alien spacecraft, although its definition encompasses any unexplained aerial phenomena. UFO sightings have been reported throughout recorded history and in various parts of the world. They became a major subject of interest–and the inspiration behind numerous films and books–following the development of rocketry after World War II with Foo Fighters Appearing During WWII.
Alien Encounter Timeline
- Main article: Alien Encounter Timeline
In cryptozoology, the term UFO–or unidentified flying object–refers to a suspected alien spacecraft, although its definition encompasses any unexplained aerial phenomena. UFO sightings have been reported throughout recorded history and in various parts of the world, raising questions about life on other planets and whether extraterrestrials have visited Earth. They became a major subject of interest–and the inspiration behind numerous films and books–following the development of rocketry after World War II.
|6000-5000 BC||Cave Paintings of Aliens are painted.|
|1,500 BC||Pharaoh Thutmose III In Egypt, the Pharaoh Thutmose III sees silent, foul-smelling circles of fire and flying discs in the sky.|
|800 BC||Peru Aerial landing strips are built in the Peruvian Andes.|
|329 BC||Alexander the Great, via his historians: told of 2 strange objects in the sky that dove repeatedly at his army.|
|99 BC||Prodigia of Julius Obsequens of Rome sighted a round or circular shield, took its path in the sky from west to east."|
To see full list, see List of Alien Encounters.