Ep 19. Finding Planets with Gravitational Lensing
- TV-PG
- September 25, 2015
- 30 min
Get a lesson in Einstein�۪s general theory of relativity to understand an effect called gravitational microlensing, which allows astronomers to deduce a planet�۪s existence without recording any light from the planet or its host star. This technique reveals exoplanets that would otherwise go undetected.