Also known as Unidentified Flying Objects, UFOs are generally any object in the sky which cannot be identified by observers. For purposes of this category, however, they are classified as objects which are thought to possibly be alien spacecraft. They, along with extraterrestrial beings, are the topic of this category.
Regular Blogs
A published author who writes books about UFOs runs this weblog which is all about that topic. He relies heavily on historical data as well as his expertise about ufology. Many of his posts are about Roswell, but he also writes about all other manner of unidentified flying objects.
http://kevinrandle.blogspot.com/
Offers details about UFO research including abductions, Annunaki, and presents photographs and videos of many reported sightings.
http://contactblog.com/
Inexplicata: The Journal of Hispanic Ufology
The official blog of the Institute of Hispanic Ufology which delves into cases from South America, the Caribbean, and Spain.
http://inexplicata.blogspot.com/
Contains eye witness reports of sightings, extracted from MUFON and NUFORC, as well as other UFO research entities. Most of the sightings involve the state of Texas. The blogger says he endeavors to search for the truth, and to that end, he solicits first-hand information from readers as well.
http://lightsinthetexassky.blogspot.com/
Presents news as well as historical reports about unidentified flying objects worldwide. Categories contain items about alien abduction, flying saucers, and hoaxes.
http://www.theufochronicles.com/
This weblog, with the sub title “Fighting Against Truth Decay," digs into news items about unidentified flying objects. Posts are available about the 2011 California drone revival, green fireballs, and mentions in Wikileaks about UFOs.
http://blog.ufo-blog.com/
Scientific information about unidentified flying objects is what is contained on this blog. Topics include black holes, extraterrestrial life, and alien abduction memories.
http://ufos-scientificresearch.blogspot.com/