look-back time

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look-back time [′lu̇k ‚bak ‚tīm]

(astronomy)

The time in the past at which the light now being received from a distant object was emitted.

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No references found			It's not necessarily such a huge gain in look-back time, but 5 was thought of as one of the earliest epochs in which galaxies might form. Red glimmer reveals most distant galaxy by Jensen, M.N. / Science News			longwall retreating longwall system Longworth, Nicholas Longwy Longyear City Longyearbyen Lonicera Caprifolium Lonigan, Studs Lonnrot, Elias Lönnrot, Elias Lonoke County Lons-le-Saunier Lonsdale, Dame Kathleen lonsdaleite LonWorks loo Loo-choo Islands loofah Look Look Ahead Left-to-right parse, Rightmost-derivation Look ahead LR look and feel look angle look box look-ahead cache look-back time look-through look-up look-up table lookahead lookahead tree lookaside cache Looking Backward Looking Backward, 2000-1887 Looking for Mr. Goodbar Looking Glass Looking Glass Powwow lookout lookout station lookout tower Lookout, Cape Lookout, Fred LOOKS lookum lookup lookup table Loom loom house Looming Loomis, Elias Loomis-Wood diagram			Look what the cat's dragged in! Look What We Found Look who's here! Look Who's Talking Look who's talking! look with scorn on look with scorn upon Look Your Best Look'n'feel Look, Ask, Model, Discuss, Act Look, Cover, Write, Check Look, Say, Cover, Write & Check Look, Tone and Feel Look-a-Like look-ahead cache Look-Ahead Earliest Deadline First Look-Ahead Maximize-Batch Look-Ahead Packet Fair Queueing Look-Ahead Program Counter Look-Ahead Report Look-Ahead Water-Filling Algorithm look-alike Look-and-feel look-back program look-back time Look-Cool Factor Look-Down, Shoot-Down look-in look-ins Look-N-Feel Look-out Look-out Look-out look-out post look-out tower look-over look-see look-see look-sees look-sees look-through look-through Look-thru Look-up Look-up Look-up Look-Up Service Look-up table Look-Up Table Digital - Analog Converter Look-Ups Look-Ups Look-Ups Look.Inward.For.Evolution Lookahead Lookahead Optimistic Best First Search

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