|Fi 7 from Fressin et al.|
- David Spiegel in the IAS review has an interesting article on "Life on other planets". I've reached out to him because he'd be a very good person to explore this conjecture with.
- Tuomi et al's paper “Periodic variations in the Tau-Ceti velocities” suggests that there are earth-like planets in stars quite close to earth.
- Fressin et al's “The False Positive Rate of KEPLER and the Occurrence of Planets” suggests that about 16% of main-sequence FGKM stars have planets whose mass is appx the same as that of Earth (85-125%). Of course these are not necessarily "Habitable Earth-like planets" since this require stable solar systems over a period of c.4bn years, which almost certainly needs a Jupiter, a very large moon, and certainly needs the star to be reasonably well-behaved and far enough away from other stars and black holes.
- Now Bagdonaite et al in Science find "A Stringent Limit on a Drifting Proton-to-Electron Mass Ratio from Alcohol in the Early Universe" basically showing that this particular fundamental constant hasn't changed by more than 1 part in 10^7 over a period of 8 bn years.