Mercury may be sole survivor of planetary pile-up

Our solar system may have started out with several planets packed closer to the sun than Mercury, much like the planets we see around other stars

















from New Scientist - Online news http://feeds.newscientist.com/c/749/f/10897/s/42207a5e/sc/10/l/0L0Snewscientist0N0Carticle0Cdn267610Emercury0Emay0Ebe0Esole0Esurvivor0Eof0Eplanetary0Epileup0Bhtml0Dcmpid0FRSS0QNSNS0Q20A120EGLOBAL0Qonline0Enews/story01.htm