The REAL Possibility of Mapping Alien Planets!
PBS Space Time · 4 则 HN 推荐
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PBS Space Time explains the proposal to use the Sun's gravity as a giant lens, sending a train of small light-sail spacecraft to the focal point roughly 550 AU out. It covers how such a telescope could image exoplanets in surprising detail and the engineering challenges involved.
HN 推荐的原因： It is the go-to explanation whenever a thread touches on imaging exoplanets or solar gravitational lens telescopes.
“Pretty good explanation of the technique and challenges involved” 阅读 HN 讨论 ↗