horizon problem

Questions

What does horizon problem mean?

The cosmological fine-tuning problem of explaining the observed homogeneity of causally disconnected regions of space in the absence of a mechanism that sets the same initial conditions everywhere.

How to pronounce horizon problem

1. Open the pronunciation page — Open the Speakur entry for “horizon problem”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “horizon problem”.
4. Repeat and practice — Say “horizon problem” aloud, matching stress and vowels until it feels natural.