saundby
SOC-14 1K
http://www.nature.com/news/the-exoplanet-next-door-1.11605

Now to generate the rest of the system.
I hope it's not the mainworld...with population A...tough to explain.Although nearly identical to Earth in mass, the planet is much closer to its star than Mercury is to the Sun, meaning that it is a scorched and barren rock.

Now to generate the rest of the system.
Finding a true Earth twin, circling a Sun-like star at a distance similar to Earth’s orbital radius around the Sun, would require another leap in sensitivity, to motions of just 9 centimetres per second.