1. Keith Horne

2. Gravitational microlensing
Lensing mass
Observer
Background source
Paczynski 1996, ARA&A 34, 419

3. Gravitational microlensing
time=const
Paczynski 1996, ARA&A 34, 419

4. Impact parameter and amplification
Lensing mass
Observer
Background source
Paczynski 1996, ARA&A 34, 419

5. First microlensing planet
Beaulieu 2006, Nature 439, 437

6. Two planet system
Gaudi 2008
Science 319, 927

9. Very Large Telescope (VLT), ESO

10. The Extremely Large Telescope (ELT)

12. Kalas et al Science

13. Marois et al. 2008
Science