noun, expression
cosmic distance ladder; cosmological distance ladder
Technical astronomy term for the succession of methods used to determine distances to celestial objects.
宇宙の距離梯子は、近くの星から遠方の銀河までの距離を測る手法の連鎖です。
The cosmic distance ladder is a chain of methods for measuring distances from nearby stars to distant galaxies.
Calque of English 'cosmic distance ladder'; 宇宙 (universe) + の (possessive particle) + 距離 (distance) + 梯子 (ladder).