This mod will turn the Kerbol system into the Solar System.
For a list of recommended mods, and one built just for this, see the Realism Overhaul release thread.
10x Rescaled stock-Kerbol system by jsimmons (OUTDATED)
RSS config that uses all stock + PlanetFactory planets by metaphor and sovereign
1/10th size Solar System (i.e. real solar system made Kerbal-sized) by metaphor
6.4:1 Kerbin RSS - Config file for Real Solar System that maintains the stock flavor by regex (OUTDATED)
Real Solar System
This mod will convert the Kerbol System into the Solar System, rescaling, moving, and changing KSP's planets, moons, etc. to match our own.
Thanks to asmi for kicking me into to doing this and offering so much help along the way; to ferram for aeronautics and orbital help (and FAR, which is essential), and for countless time spent helping others get the most from this mod (and me the most from my modding); to ZRM for many ideas and info; to yargnit and MedievalNerd for playtesting extraordinaire; to everyone else who offered suggestions, code, help, cool screenshots...
Extract to KSP/GameData.
NOTE: You really should play with the recommended mods. See the Realism Overhaul thread for details.
Planets included (no new graphics for now, excepting Earth and the Moon)
Mercury is represented by Moho
Venus is represented by Eve
Earth is represented by Kerbin
Moon is represented by Mun
Mars is represented by Duna
Phobos is represented by Bop
Deimos is represented by Gilly
Jupiter is represented by Jool
Io is represented by Pol
Europa is represented by Eeloo
Ganymede is represented by Tylo
Callisto is represented by Ike
Saturn is represented by Dres
Titan is represented by Laythe
Uranus is represented by Minmus
Pluto is represented by Vall
*Fixed orbit lines (thanks HoneyFox!)
*Added pressureCurve support with curves for Earth, Venus, and Mars (megathanks Starwaster!)
*Added temperatureCurve support (nothing here yet)
*Fixed a typo with tidally locked orbits (thanks eggrobin!)
*Converted orbits to Earth-relative inclination, to support axial tilt (megathanks eggrobbin!)
*Recompiled for .23.5
High-res normal map for Earth (8192x4096; replace your existing 2048x1024 copy)
Launching from (the real) KSC
Earth and the other orbits (X-Y plane is the equator; notice how tilted we are from the ecliptic)
Ferram launches RISAT-1 (India)
metaphor's Cassini-Huygens mission (to Saturn and Titan):
widmanstatten goes to Mars and back with Apollo-derived hardware