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Voss V, the largest planet by far in the Voss system, is a huge gas world composed primarily of hydrogen and helium and has a low density, and extremely rapid rotation. The planet appears from space as a brilliant golden sphere, with fast-moving band of yellows and browns visible from closer distances.
Voss V's rapid rotation causes an equatorial bulge that is apparent in telescopic views of the planet. The rotation is not uniform. The banded appearance of this planet reflects the presence of strong atmospheric currents that lead to different rotation periods at different latitudes. These bands are made more apparent by the pastel colors of the clouds themselves. The colors come from traces of compounds formed by ultraviolet light, lightning discharges, and heat.
This huge world is made mostly from the two lightest and most abundant elements in the galaxy, a composition similar to that of the sun and other stars. Voss V may therefore represent a direct condensation of a portion of the primordial solar nebula-the great cloud of interstellar gas and dust. Voss V's turbulent, cloud-filled atmosphere is therefore cold. With hydrogen so abundant, hydrogen-based molecules, such as methane, ammonia, and water, predominate. Periodic temperature fluctuations in Voss V's upper atmosphere reveal a pattern of changing winds.
Voss V radiates about twice as much energy as it receives from the Dellal sun. The source of this energy is apparently a very slow gravitational contraction of the entire planet, rather than the nuclear fusion that powers the sun. Voss V would have to be a hundred times larger to have enough mass to ignite a nuclear furnace.
Ammonia freezes in the low temperature of the planet's upper atmosphere forming white cirrus clouds-zones, ovals, and plumes. At lower levels, ammonium hydrosulfide can condense. Colored by other compounds, clouds of this substance may contribute to the widespread tawny cloud layer on the planet. Although only the barest skin of the planet is directly visible, calculations show that the temperature and pressure continue to increase toward the interior, reaching values at which hydrogen first liquefies and then assumes a metallic, highly conducting state. A core of material much like that of rocky planets most likely exists at the center.