"Does the astrobiology community still hold with the 5 kingdom classification system, or have other kingdoms been introduced and discussed?"
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Titan's Triple Threat
The Cassini-Huygens mission has given us our best view yet of Titan, but this moon of Saturn still remains shrouded in mystery. A proposed future mission takes a three-tiered approach – using an orbiting spacecraft, a surface probe, and a hot air balloon — to further explore the enigmatic moon.Source: [Astrobiology Magazine]
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