They Greys are one of many different types of alien races that have, and are still visiting Earth. The Grays are probably the most known alien species because they not only come to Earth and our solar system often, but abduct people and let them go leaving many witnesses to attribute to what they look like and what their agenda is here on Earth. When people ask "what do aliens look like" the Greys are the usual description they get.
There are two different types of Greys that visit Earth. The first seem to be the leaders and the most intelligent of the two. They are approximately 5 to 8 feet tall, have large heads, large dark eyes, long skinny fingers arms and legs, have a small mouth, small ear holes, and have been reported to have 2 small nostrils. They are hairless and seem to communicate through some kind of telepathy with each other as well as humans.
The second are worker Greys that have been cloned to the bidding of the larger grays. They are much smaller then the other Greys at around 3.5 to 4.5 feet tall, stubbier fingers arms and legs, but are similar in other ways. (Same shaped head, eyes, ear holes, and small holes for nostrils). They don't seem to be as intelligent as the taller Greys and do much of the grunt work during probing and abductions while the taller Greys work on more scientific areas like collecting sperm and egg samples and working on genetic materials.
Other alien researchers have assumed that there may be other types of greys out there with many names much like there are different races of humans such as the Bellatrax Greys, Zeta Reticuli, GREY TYPE C, and more but as to date these are the two types we can determine as true.
The Grays Alien Pictures
Worker Grey Alien in Mexico Video
A Captured Gray Alien
The Greys Alien Agenda and Objective
Many people have asked why aliens visit Earth and why they abduct people. Well there are a few different theory's as to why they're in our solar system. The Greys come from the Zeta Reticuli 1 & 2, a binary star system visible from the Southern Hemisphere approximately 38 light years away. The star system consists of two stars one slightly smaller then our own sun in the Milky way and the other almost the same mass as our sun. Both stars are much older then our own sun at around 8 billion years old and dieing while our sun is in it's middle age at 4.5 billion years old. Many people such as Betty and Barney Hill can confirm this is their home world as the Aliens during the abduction showed her and she drew a map afterwards which surprisingly was a real star system.
With the Grays sun dieing and the resources on their planet depleted they have moved on looking at other planets to inhabit (Whether or not all the Greys have left is unclear). The Greys have also been cloning themselves for generations which has damaged the genetic make up of their DNA. To fix the DNA issues they have been doing experiments on humans by trying to fill in the gaps of the damaged DNA with healthy human DNA. This is one of the reasons they abduct humans and do experiments on them. Many people who have been abducted have reported having sperm taken from them as well as eggs from women. It's believed that they have thousands of alien human hybrids from these abductions that they watch closely to see if they have succeeded in their mission of fixing their dying race.
They have also had contact with high Government officials in the past and present. Some good and some bad such as what when down in Roswell at Area 51. When we went to the moon the aliens basically chased us off and told us not to return because they have bases on the moon where they do experiments and use as a jump off place when coming and going to Earth. They have been controlling civilizations for centuries by acting as Gods, giving out technology, and using plain old fear. Some say that they even grow humans that can be controlled and place them in high offices to help keep us obedient.
Other Theories About Where The Greys Come From
Some alien researchers have theorized that the Grays aren't from outer space at all and may simply be humans from the future that use time travel to visit which could explain a lot if you think about it.
Take the basic look of the Greys to start with. They look very similar to humans but more advanced.
Their heads are larger because of the increased size of the brain.
They have grown taller and thinner over time just as we have over time.
Their fingers are more slender and longer because of less physical labor and more use with computers and robotics.
They have larger darker eyes from being exposed to sunlight remarkably less then we are normally used to and the use of computing equipment.
A smaller mouth from not needing to speak because of the use of telepathy and moving from eating meat to smaller easier digestible "fuel".
No ears for the similar reasons of not needing the use of hearing as much.
The skin of the aliens is a Gray from the mixing of races on Earth turning it into a plain gray mix.
Other things to consider that can be argued but are still worth mentioning are the Gray aliens that visit us seem to have a great understanding of the different languages here on Earth. Did they learn this over time while studying us or is it because it's part of their past? The Grey space ships IE the flying saucers haven't changed over time which could because they are all coming from the same point in the future just visiting different times.
When they abduct us and take our sperm and eggs they may be bringing them back to the future to help save our own dieing race. We could be dieing of a disease or some man made virus or weapon gone wrong and the only way to save the human race is to bring back healthy DNA from before whatever happened to us. It's still a theory and most evidence points to extraterrestrials but we're not about to rule anything out until the truth is known.