▲ 0 r/space
The Light Paradox: if a distant telescope could intercept light mid-travel, would it see all of Earth’s history at once?
If aliens 2,000 light years away just built a telescope powerful enough to see Earth, they’d be watching the Roman Empire right now. But think about this: the light that left Earth TODAY is already traveling toward them, sitting somewhere in that 2,000 light year corridor. So if their telescope could intercept light at different points along that path rather than just waiting for it to arrive, would they be sampling different moments in Earth’s history. The further out they reach, the more “recent” the Earth they see?
u/PornstacheJaucques — 16 hours ago