Expans

Expans are a type of naturally occurring or artificially created enclosed volume of space, often contained by an atmospheric boundary or membrane. In a celestial context, expansive can refer to the vast regions of interstellar space, galaxies, and galaxy clusters that are expanding due to the acceleration of cosmic expansion.

The concept of expansive arises from the initial stages of a cataclysmic event, such as a supernova or a cosmic restructuring. This event can create a large-scale expansion of the surrounding space, affecting individual stars, planets, and the overall structure of nearby galaxies. Astrophysicists have also discussed the potential for more gradual expansive processes occurring within stars, planets and moons as a result of mechanical energy release or internal restructuring.

Artificial expans are primarily found in architectural, underwater, or cryogenic contexts, designed to create specific environments or isolate items from their surroundings. A notable example is the inner compartments within atmospheric entry vehicles that expand when entering an atmosphere. This interior is designed to maintain a constant internal pressure, keeping objects safeguarded from atmospheric or gravitational stresses.

The study of expansive phenomena contributes to our understanding of the universe's evolution, causal factors driving change in destination-targeting astronomy and the fundamental difficulties in appropriating these volumes across space.