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The planet is so remote that Canopus A appears as just a very bright first-magnitude star.
It is composed entirely of helium in different phase states. From upper to lower:
- A dense atmosphere of atomic helium covers lays depth of 70,000 meters. Temperatures there vary from 11°K (at the upper helium boundary) to 4.2°K (at the quasi liquid surface). The atmosphere was discovered by Daret of the Planetoscience Council on Arrakis (AG 14390)
- Just beneath, the pressure is sufficient to alter the phase state of helium from gaseous to liquid and results to a pale blue sea of liquid helium.
- At a depth of 3,900 meters, the liquid temperature reaches 2.6°K and the helium abruptly changes to the zero-viscosity helium 3 as the liquid helium passes through the tri-alpha transition. This transition is only a few meters thick and is characterized by high dynamic turbulence. Helium 3 from that zone is processed by a facility installed on the moon, Laran.
- Finally, there is a solid central core of unknown composition, perhaps of helium existing in the supra metallic state. Its existence as deduced by hypo-seismic studies
- Orbiting distance
- 7.7 x 109 km
- 2,225 km
- 11°K - 4.2°K - 2.6°K
- 1 (Laran)
- ARRAKIS, Astronomical aspects of