Helios

Helios (ˈhiːli.ɒs; Ancient Greek: Ἥλιος Hēlios; Latinized as Helius; Ἠέλιος in Homeric Greek) was the personification of the Sun in Greek mythology. He is the son of the Titan Hyperion and the Titaness Theia (Hesiod) (also known as Euryphaessa (Homeric Hymn 31)) and brother of the goddesses Selene, the moon, and Eos, the dawn.

Medea (Ancient Greek: Μήδεια, Mēdeia) is a tragedy by the ancient Greek playwright Euripides based on a myth. It was first performed in 431 BC as part of a trilogy, the other plays of which have not survived. Its plot centers on the actions of Medea, a former princess of the kingdom of Colchis and the wife of Jason; she finds her position in the world threatened as Jason leaves her for a princess of Corinth and takes vengeance on him by murdering his new wife and her own two sons, before escaping to Athens to start a new life.

Sunday (Latin: dies solis meaning "day of the sun") is the day of the week between Saturday and Monday. Sunday is a day of rest in most Western countries and a part of the weekend. In some Middle Eastern countries, Sunday is a weekday.

The Augustaion (Greek: Αὐγουσταῖον) or, in Latin, Augustaeum, was an important ceremonial square in ancient and medieval Constantinople (modern Istanbul, Turkey), roughly corresponding to the modern Aya Sofya Meydanı (Turkish, "Hagia Sophia Square"). Originating as a public market, in the 6th century it was transformed into a closed courtyard surrounded by porticoes, and provided the linking space between some of the most important edifices in the Byzantine capital. The square survived until the late Byzantine period, albeit in ruins, and traces were still visible in the early 16th century.

The Colossus of Rhodes (Ancient Greek: ὁ Κολοσσὸς Ῥόδιος, ho Kolossòs Rhódios; Modern Greek: Κολοσσός της Ρόδου, Kolossós tis Ródou) was a statue of the Greek sun god Helios, erected in the city of Rhodes, on the Greek island of the same name, by Chares of Lindos in 280 BC. One of the Seven Wonders of the Ancient World, it was constructed to celebrate the successful defence of Rhodes city against an attack by Demetrius I of Macedon, who had besieged it for a year with a large army and navy.

Sol is the personification of the Sun and a god in ancient Roman religion. It was long thought that Rome actually had two different, consecutive sun gods: The first, Sol Indiges (Latin: the deified sun), was thought to have been unimportant, disappearing altogether at an early period. Only in the late Roman Empire, scholars argued, did the solar cult re-appear with the arrival in Rome of the Syrian Sol Invictus (Latin: the unconquered sun), perhaps under the influence of the Mithraic mysteries. Publications from the mid-1990s have challenged the notion of two different sun gods in Rome, pointing to the abundant evidence for the continuity of the cult of Sol, and the lack of any clear differentiation – either in name or depiction – between the "early" and "late" Roman sun god.

Helium (from Greek: ἥλιος, helios, 'sun') is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements, and it does not have a melting point at standard pressures. It is the second-lightest and second most abundant element in the observable universe, after hydrogen. It is present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. Its abundance is similar to this in both the Sun and Jupiter, because of the very high nuclear binding energy (per nucleon) of helium-4, with respect to the next three elements after helium. This helium-4 binding energy also accounts for why it is a product of both nuclear fusion and radioactive decay. The most common isotope of helium in the universe is helium-4, the vast majority of which was formed during the Big Bang. Large amounts of new helium are created by nuclear fusion of hydrogen in stars.

The Warrior relief of Efrenk is a rock relief from the Greco-Roman period, probably the 2nd century AD, located by the Lamos river (modern day Limonlu) in Cilicia, southern Turkey.

*Seh₂ul and *Meh₁not are the reconstructed Proto-Indo-European Sun deity and Moon deity respectively. *Seh₂ul is reconstructed based on the solar deities of the attested Indo-European mythologies, although its gender (male or female) is disputed, since there are deities of both genders. Likewise, *Meh₁not- is reconstructed based on the lunar deities of the daughter languages, but they differ in regards to their gender.

Phaethon (Ancient Greek: Φαέθων, Phaéthōn) is the title of a lost tragedy written by Athenian playwright Euripides, first produced circa 420 BC, and covered the myth of Phaethon, the young mortal boy who asked his father the sun god Helios to drive his solar chariot for a single day. The play has been lost, though several fragments of it survive. Another treatment of the myth had been delivered earlier by Aeschylus in his lost play Heliades ("daughters of the Sun"), whose content and plot are even more fragmentary and obscure. The influence of Euripides' play on Ovid's version of the myth can be easily recognized. From this now lost play only twelve fragments remain, covering around 400 lines or so.