Eclipse Juno Indigo Helios Galileo The meaning of these versions (RPM)

Galileo Ganymede Europa These names represent different versions of Eclipse
November 7, 2001, Eclipse 1.0 released six months later, June 27, 2002 eclipse into the 2.0 era. Eclipse of the 2.0 era experienced 2.0 and 2.1 two large versions. Of these, 2.0 were followed by the introduction of 2.0.1 and 2.0.2, followed by the release of the 2.1 version on March 27, 2003, with the introduction of 2.1.1,2.1.2 and 2.1.33 subsequent revisions.
June 25, 2004 is a memorable day for Eclipse, with the OSGi runtime architecture being introduced into Eclipse 3.0. The Eclipse Foundation was established this year, which also marks the beginning of Eclipse's coming into a new era. After 3.0 there are two small revisions of 3.0.1 and 3.0.2. For detailed release time information, please refer to Eclipse official website http://archive.eclipse.org/eclipse/downloads/index.php
June 27, 2005 Eclipse 3.1 was released, specifically to mention 3.1, because from this version until the release of the 3.5 version, the formation of a Jupiter satellite name-related series. In 1610, the famous scientist Galileo Galilei, through the observation of the Europa 1-Ganymede 4, presented evidence against Geocentric, and Ganymede 1-Ganymede 4 is also known as Galileo's four moons (and many other satellites later discovered by Jupiter). The four moons were also given the names of four mythical characters: Europa-1:io, 2:europa, Europa-3:ganymede, Genimide. (It is worth mentioning that earlier than Galileo 2000 years ago, there is a record that the Warring States period of China's Gander in 346 A.D. 3) Mu Wei 4:callisto, Calisto take the names of these four people, a very important reason may be that these four characters are famous for the handsome
But Eclipse's naming from 3.1 to 3.4 (codename) is not in the order of Europa 1-4, but on the order of the four satellites from Jupiter from near to far, so Eclipse 3.1 is named after the 1th nearest 1--io in Jupiter's known satellite, eclipse 3.2 The use of the 4--callisto from Jupiter (all the Europa) 4th near, Eclipse 3.3 using the Europa 2--europa (6th near), the remaining 3--ganaymede of the most distant wood is sent to Eclipse 3.4.
The following is the currently known version code
Eclipse 3.1 Version Code IO "Europa 1, Yi ao"
Eclipse 3.2, 30-06-2006, Callisto projects, version code Callisto "Europa Four, Calisto"
Eclipse 3.3, 29-06-2007, Europa projects, version code Eruopa "Europa II, Europa"
Eclipse 3.4, 25-06-2008, Ganymede projects, version code Ganymede "Ganymede, Genimide"
Eclipse 3.5, 24-06-2009, Galileo projects, version code Galileo "Galileo"
Eclipse 3.6, 23-06-2010, Helios projects, version code Helios "Sun god"
Eclipse 3.7, 22-06-2011, Indigo Projects, version code Indigo "Indigo" [in the planning stage]

eclipse 4.2, 27-06-2012,juno projects, Version code juno  "Juno" (The wife of the Lord God Jupiter)

eclipse 4.3 (planned),26 june 2013,  version code kepler  "Kepler"