Antikythera in the context of "Kythira"

The Sea of Crete (Greek: Κρητικό Πέλαγος, Kritiko Pelagos), or Cretan Sea, is a sea, part of the Aegean Sea, located in its southern extremity, with a total surface area of 45,000 km (17,000 sq mi). The sea stretches to the north of the island of Crete, east of the islands of Kythera and Antikythera, south of the Cyclades, and west of the Dodecanese islands of Rhodes, Karpathos and Kassos. The bounding sea to the west is the Ionian Sea. To the northwest is the Myrtoan Sea, a subdivision of the Mediterranean Sea that lies between the Cyclades and Peloponnese. To the east-southeast is the rest of the Mediterranean Sea, sometimes credited as the Levantine Sea. Across the island of Crete, to the opposite shore of it begins the Libyan Sea. Ferry routes to and from Piraeus and Heraklion, as well as the southern islands of the Aegean and the Dodecanese, run in this area.

Just off the coastline of Northeastern Crete, the sea reaches a maximum depth of near 3,293 m (10,000 ft). Other sources (maps) show a maximum depth of 2,591 m (8,500 ft).

Kythira (/kɪˈθɪərə, ˈkɪθɪrə/ kih-THEER-ə, KITH-irr-ə; Greek: Κύθηρα [ˈciθira]), also transliterated as Kithira, Kythera, Kithera, Cythira, Cithira, Cythera and Cithera, is an island in Greece lying opposite the south-eastern tip of the Peloponnese peninsula. It is traditionally listed as one of the seven main Ionian Islands, although it is distant from the main group. Administratively, it belongs to the Islands regional unit, which is part of the Attica region, despite its distance from the Saronic Islands, around which the rest of Attica is centered. As a municipality, it includes the island of Antikythera to the south.

The island is strategically located between the Greek mainland and Crete, and from ancient times until the mid-19th century was a crossroads of merchants, sailors, and conquerors. As such, it has had a long and varied history and has been influenced by many civilizations and cultures. This is reflected in its architecture (a blend of traditional, Aegean and Venetian elements), as well as the traditions and customs, influenced by centuries of coexistence of the Greek, and Venetian cultures.

The Ionian Islands were an overseas possession of the Republic of Venice from the mid-14th century until the late 18th century. The conquest of the islands took place gradually. The first to be acquired was Cythera and the neighboring islet of Anticythera, indirectly in 1238 and directly after 1363. In 1386 the Council of Corfu, which was the governing body of the island, voted to make Corfu a vassal of Venice. During the Venetian period the Council remained the most powerful institution on the island. A century later, Venice captured Zante in 1485, Cephalonia in 1500 and Ithaca in 1503. These three islands modelled their administration on Corfu's model and formed their own councils. The conquest was completed in 1718 with the capture of Lefkada. Each of the islands remained part of the Venetian Stato da Màr until Napoleon Bonaparte dissolved the Republic of Venice in 1797. The Ionian Islands are situated in the Ionian Sea, off the west coast of Greece. Cythera, the southernmost, is just off the southern tip of the Peloponnese and Corfu, the northernmost, is located at the entrance of the Adriatic Sea. It is believed that the Venetian period on the Ionian Islands was generally prosperous, especially compared with the coinciding Tourkokratia — Turkish rule over the remainder of present-day Greece.

The governor of the Ionian Islands during the Venetian period was the Provveditore generale da Mar, who resided on Corfu. Additionally, each island's authorities were divided into the Venetian and the domestic authorities. The economy of the islands was based on exporting local goods, primarily raisins, olive oil and wine, whereas Venetian lira, the currency of Venice, was also the currency of the islands. Some features of the culture of Venice were incorporated in the culture of the Ionian Islands, thus influencing to this day local music, cuisine and language.

The Antikythera mechanism (/ˌæntɪkɪˈθɪərə/ AN-tik-ih-THEER-ə, US also /ˌæntaɪkɪˈ-/ AN-ty-kih-) is an ancient Greek hand-powered orrery (model of the Solar System). It is the oldest known example of an analogue computer. It could be used to predict astronomical positions and eclipses decades in advance. It could also be used to track the four-year cycle of athletic games similar to an olympiad, the cycle of the ancient Olympic Games.

The artefact was among wreckage retrieved from a shipwreck off the coast of the Greek island Antikythera in 1901. In 1902, during a visit to the National Archaeological Museum in Athens, it was noticed by Greek politician Spyridon Stais as containing a gear, prompting the first study of the fragment by his cousin, Valerios Stais, the museum director. The device, housed in the remains of a wooden-framed case of (uncertain) overall size 34 cm × 18 cm × 9 cm (13.4 in × 7.1 in × 3.5 in), was found as one lump, later separated into three main fragments which are now divided into 82 separate fragments after conservation efforts. Four of these fragments contain gears, while inscriptions are found on many others. The largest gear is about 13 cm (5 in) in diameter and originally had 223 teeth. All these fragments of the mechanism are kept at the National Archaeological Museum, along with reconstructions and replicas, to demonstrate how it may have looked and worked.