1. 
   Thira
   [crater] Thira is a crater on Mars. It is located within the larger crater Gusev. It is named after the town of Fira on the island of Santorini, Greece. Thira is about 20km east of the landing site of NASA`s Spirit rover. The rim of the crater can be seen in the distance in images taken by S...
   Found op http://en.wikipedia.org/wiki/Thira_(crater)
   
   
2. 
   Thíra
   (from the article `Greece`) ...but more recently (the first third of the 20th century) with agrarian reform, are juxtaposed with some of the most ancient towns of Mediterranean ... ...black-striped volcanic cliffs rising to almost 1,000 feet (300 m). The summit of Thera is the 1,857-foot (566-metre)...
   Found op http://www.britannica.com/eb/a-z/t/39
   
   
3. 
   Thíra
   Thíra or Thera (both: thēr'u) , volcanic island (1991 pop. 9,360), c.30 sq mi (80 sq km), SE Greece, in the Aegean Sea. One of the Cyclades, Thíra is also known as Santorini, for St. Irene, the protector of the island. It is a tourism center noted for its wine. Pumice stone a...
   Found op http://www.infoplease.com/ce6/world/A0848486.html
   
   
4. 
   Thira
   [regional unit] Thira (Περιφερειακή ενότητα Θήρας) is one of the regional units of Greece. It is part of the region of South Aegean. The regional unit covers the islands of Thira (Santorini), Anafi, Folegandros, Ios, Sikinos and several smaller islands in the Aegean S...
   Found op http://en.wikipedia.org/wiki/Thira_(regional_unit)
   
   

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