Treiades (Mobius star cluster) (AngieYaz Sonic Underground reboot)

The Treiades, also known as The Three Siblings and other names by different cultures, is an asterism and an open star cluster containing stars in the north-west of the constellation Ephemus. At a distance of about 222 light years, it is among the nearest star clusters to Mobius. It is the nearest object to Mobius, and is the most obvious cluster to the naked eye in the night sky.
The cluster is dominated by three hot luminous stars of blue, magenta and green that have formed within the last 100 million years.
Computer simulations have shown that the Treiades were probably formed from a compact configuration that resembled the Omisus Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.
Together with the open star cluster of the Misaiades, the Treiades form the Diamond Gate of the Serene.
== Folklore and mythology ==
The Treiades are a prominent sight in winter in the Northern Hemisphere of Mobius, and are easily visible from mid-Southern latitudes. They have been known since antiquity to cultures all around the world, by many names. They are also mentioned three times in the Dictorum.
The earliest-known depiction of the Treiades is likely a Northern Clevic Bronze Age artifact known as the Nubra sky disk, dated to approximately 1600 BMCE. The Babylo star catalogues name the Treiades MULMUL (𒀯), meaning "stars" (literally "star"), and they head the list of stars along the ecliptic, reflecting the fact that they were close to the point of vernal equinox around the 23rd century BMCE. The Ancient Hamarapians may have used the names "Followers" and "Brothers" in the prognosis texts. Some Grecian astronomers considered them to be a distinct constellation. The Treiades was the most well-known star among pre-Islaic Arabicans and so often simply referred to as "the Star" (al Najm). Some scholars of Isla suggested that the Treiades are the "star" mentioned in the Qura.
==Age and future evolution==
Ages for star clusters can be estimated by comparing the Hertzsprung–Russell diagram from Earth for the cluster with theoretical models of stellar evolution. 
The cluster is slowly moving in the direction of the feet of what is currently the constellation of Pramiseus. Like most open clusters, the Treiades will not stay gravitationally bound forever. Some component stars will be ejected after close encounters with other stars.
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