4min chapter

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#116 – Sara Seager: Search for Planets and Life Outside Our Solar System

Lex Fridman Podcast

CHAPTER

Using Gravitational Lensing in Astronomy

In astronomy, and Einstein thought about this initially, we can use a massive object, Ben Space. And so light that should be traveling like straight. It actually travels around the warped space. You have a way to use that from magnification. There are galaxies that are lens, so-called gravitational lens, by intervening galaxy clusters. The second one is called star shot - it's an initiative by the Breakthrough Foundation. They want to send thousands of little tiny spacecraft, which they now call star chip. Each of these star chips will deploy a solar sail. That's a few meters in diameter. On Earth, we would have a bank of telescopes with lasers. These lasers would momentarily shine upwards

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