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Sometimes the farther away an object is, the bigger it seems to be BY PHIL PLAIT I T’S ALWAYS AMAZING, and more than a little humbling, when the universe reminds us that our “common sense” is provincial and will fall apart on cosmic scales. If you’re on the surface of Earth—and I’m betting you are—there are many ways to reliably estimate the dis- tance to some object. One thing we do almost subconsciously is compare an object’s apparent size with how big we know it to be. For example, you have a good feel for the size of, say, a typical human. …
摘自《科学美国人》(Scientific American)第334卷 第3期 · 2026年3月刊,Phil Plait。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。