expanding Universe

Show Summary Details

Quick Reference

Any model universe in which the space between widely separated objects is expanding. In the real Universe, neighbouring objects such as close pairs of galaxies do not move apart because their mutual gravitational attraction exceeds the effect of the cosmological expansion. However, the distance between two widely separated galaxies, or clusters of galaxies, will increase as the Universe expands.

Subjects: Astronomy and Astrophysics — Physics.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.