lookback time

Fetched 2026-10-26 (cache).

Synonyms: look-back time, look back time

Antonyms: look-back time, look back time

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|astronomy|cosmology}} The [[amount]] of [[time]] [[elapsed]] between the [[moment]] that [[light]] is [[detected]] on [[Earth]] and the [[moment]] it was [[originally]] [[emitted]] by the [[source]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.