The Accelerating Expansion of Outer Space

Main Stage

Observations reveal that the expansion of space between galaxies is speeding up, rather than slowing down because of gravity as expected. Over the largest distances, the Universe seems to be dominated by a mysterious, repulsive “dark energy” whose exact physical origin and nature are still unknown. If this accelerated expansion continues far into the future, we will eventually see only the stars within our Galaxy, not any other galaxies – we will be seemingly alone in the observable Universe.