Creating porcelain sculptures for interstellar art projects presents a unique set of challenges that push the boundaries of traditional ceramics. The first major obstacle is material fragility - porcelain's delicate nature must withstand extreme temperature fluctuations, cosmic radiation, and potential micrometeorite impacts during space travel. Artists must develop innovative reinforcement techniques without compromising aesthetic integrity.

Another significant challenge involves adapting to zero-gravity environments. Earth-based ceramic techniques relying on gravity for shaping and drying become obsolete in space, requiring completely new methodologies for sculpting and firing. The absence of atmospheric pressure also affects glaze chemistry and final finishes.

Cosmic aesthetics present creative dilemmas as well. Artists must reinterpret traditional porcelain artistry through the lens of interstellar themes while maintaining cultural significance. The sculptures need to communicate universal artistic values while potentially being viewed by extraterrestrial audiences with unknown perceptual frameworks.

Long-term preservation in space adds another layer of complexity. Unlike Earth's stable museums, space exposes artworks to continuous degradation from solar winds and cosmic rays. Developing protective coatings that don't obscure the artwork's visual appeal remains an unsolved technical challenge.

Lastly, the logistical hurdles of transporting these fragile artworks across interstellar distances require revolutionary packaging solutions. Each sculpture must survive intense launch vibrations, years of space travel, and potentially harsh planetary landings - all while maintaining its artistic vision intact.

These challenges make interstellar porcelain sculpture one of the most demanding frontiers in contemporary space art, merging advanced materials science with profound artistic innovation.