16?5-583 , tkl(ik , The Tour Guide June 1996 Jet Propulsion Laboratory Callforoia Instwe of Technology JP1 13-13554 -..-—— ———.. -,. -+ .._ -.. -—.. — _. .._. “.. Forfum favors lhc hold. - Vi rgil At this very mormmt, spacec.] aft Galileo is orbiti~lg, the planet Jupiter. We invite you to joitl us for at I exciting 2-year rnissicm, lhc frost exkmive visit to an outer planet and its satellites. —.—.—,— --- .- . .,. -—. ..— -—. .__. _. \ . —.——.-. .. —.., — —.. — _ . ..— :. CO NT EN”l’S 1 About ‘1’his {;ui(lc . ...l . 2 ‘J’hc Journey to J1lpifer . ...3 VEIKiA-”1’lie Solution . ...3 14ifto~ . ...4 Ilow Alic]ls Would Scells . ...5 The} ligl~.Ciail)A ~)te.s~l~a . ...6 CruisiI]p, the Aste.mid J3clt . ...6 The Cmnet Spcctaclc- S-19 . ...8 Probe RCIIMSC iitld 01 )M . .10 The Tape Rccor(lcr C:l]allcngc . ..l O 3 The Planet Ju])it(!r . ...l3 liarlylix])lc)rations . ...l3 The Atn]osphcre . 14 The Interior . 16 The Ring . ..l! . ..l7. 3'he Magricl.osphcrc . ...l7 . The Satcl}itcsL . 19. What I )() Wc 1 lope’1 o Learn? . .22 4 The Galileo Orl)iter . ...25 Spacecraft S~]bsyste~]Is . ...26 Scientific lnvestigatiom. 27. 5 The Galileo I'rot)e . ...39 Decderatiol] hdodulc .! . ..4o. Descent Module . .40 . l~ngineerir]g. St] bsystc]rls . ..4O The Sciemce lnstl~)~r]c]~ts . ...42 Doppler \3rit)cl Experil nent . 45. 6 Arrival at JllI)iter . ...47 Sohduc}l To 1)() . ...47 We F]y By ‘Iwo h40c)]ls . ...48 10 }Ias AI~ iron Core I. 48. And A hda~i]ctoshcre’! . ...48 A ~]OSC Apploach . .49 . The Protm 1 lescent . .49 . —-. -—.— .—. —- ------------ ..-- .,.-— .— .— -.-— .—. ..—— — Contents ● Page iii —- —— —. —.- .- . ..—. ----- .. —.., — .- —.. -—— . .. —--— ,. c o N 1’ E N 3’ s (Contd) Thcl;atc of the (ialileo l'rollc . ..5O JOI-- A(:ritical h4af)cLl\'er . ..5l Earth occultation . ..5I 7 Probe Scitmce Rcsu]ts . 53 Atnmsphr.ric Stiucturc . ...54 ]Ie]iu]n Abundance .< . ...55 Chemical Ckmp(rsition . 55. Clouds . ...>. ...56 Thm-nlal/Sc}lar EJIcIfy l'r(Jfi)cs . ...56 Lightnil]p. 57. A New Radiation BCII . 57. Strong M’illds. .58 . An Aty])ical k{]~try Site? . ...58 8 T}~c Tollr . ...59 AT’ypical ”J’ollJls . ..6O The ‘l’our l)clailc(l . ...66 A Unique I;xperiencc . ...66 Appendix . A-1. Gali]eo Missio~l C)v(;r\'ie\\' . ..A.3 Quick-look orbit FaC:ts . ..A.5 .- —.— —- .$.. ..”.-.-.. ..-. .,. — ... —. __________ _______ l’age iv ● The Galileo ‘l-our Guide ——.—. Slt.