In the TVF model of planetary evolution, planets fissioned from the sun in twin pairs, but 6 blew up. The inner 2, between Mars and Jupiter were V (Bellatrix), about 2 earth masses, and K (Krypton), about 3 earth masses. The middle 2 were giants LHB-A and LHB-B, the former paired with Jupiter and the latter with Saturn. The outermost pair, beyond Neptune, were T (Transneptune), about 2 earth masses, and X, about 3 earth masses. Mars was a moon of Bellatrix and Mercury of Venus. Bellatrix is a duplicate name (star Bellatrix), which is not recommended, but so is Tyche (an asteroid), the name for the currently hypothesized Planet X, which is 4 Jupiter masses and about 20,000 AUs from the Sun, while T and X were about 40 and 60 AUs from the Sun. Contrary to the misconception, Planet X did not mean the 10th planet, it meant ''unknown''; Lowell designated the planet as X in 1919, long before Pluto was identified; and it was Lowell who discovered Pluto but didn't identify it as such--Tombaugh found it by examining plates while looking for Planet X. Also contrary to the misconception, giant planets are not gaseous, they are liquid, even though they are always called gaseous.
This poll was created on 2016-08-19 06:21:56
by Lightning Lad