Jupiter’s Birth

Jupiter

Well, this is pret­ty cool:

Thanks to exten­sive com­put­er sim­u­la­tions, the researchers have cal­cu­lat­ed that the cur­rent asym­me­try [in the counts of Tro­jan aster­oids] could only have occurred if Jupiter was formed four times fur­ther out in the solar sys­tem and sub­se­quent­ly migrat­ed to its cur­rent posi­tion. Dur­ing its jour­ney towards the sun, Jupiter’s own grav­i­ty then drew in more Tro­jans in front of it than behind it.

Jupiter’s unknown jour­ney revealed

Image cred­it: NASA/J­PL-Cal­tech/SwRI/MSSS/Kevin M. Gill