Which Cosmic Futures Are Still Physically Possible?

How do future scenarios change with the properties of dark energy and matter?

Change how dark-energy density evolves, compare conditional expansion histories, and separate the fate of unbound space from the behaviour of local systems.

An artistic deep-space scene with a warm dusty galaxy and two blue spiral galaxies loosely grouped against broad dark space. — Vastward-generated concept art introducing possible cosmic futures. The galaxy spacing and darkness are artistic choices, not measurements or a forecast. No future date or outcome is encoded; full original frame.

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