Exoplanets
- Shirtsleeve twin - my idea, where we could survive without spacesuits
- 1 Earth size
- 2 "Habitable" zone
- 3 low eccentricity
- 4 a large moon
- 5 a large Jupiter to deflect impactors
- 6 approximately 50% ocean
- 7 plate tectonics
- 8 plants are implied for oxygen atmosphere
Exoplanets, 2010, Sara Seager
p4 http://exoplanet.eu Fig. 1: graph of known exoplanets in July 2010
- this graph does not include eccentricity
- Radial Velocity - Lovis and Fischer
- p38 1993 ELODIE 7m/s (Observatorie de Haute-Provence France), 2003 CORALIE3-5 m/s at La Silla, 2006 SOPHIE 3m/s (OHP France)
- p38 2003 High Accuracy Radial velocity Planet Searcher, HARPS, 0.5 to 0.2 m/s, European Southern Observatory 3.6 meter telescope at La Silla Chile
- Astrometry (wobble of star) - Quirrenbach
- No results as of 2010
- Timing - Wolszczan and Kuchner
- pulsars or stable oscillation stars
- Gravitational Microlensing - Gaudi
- Transits - Winn
- Direct Imaging - Traub and Oppenheimer