astronomy Astro 1010 1000-12 Dr. Danforth Due Fri et 20th page 1 f 2 Nane: Clas:
ID: 3280944 • Letter: A
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astronomy
Astro 1010 1000-12 Dr. Danforth Due Fri et 20th page 1 f 2 Nane: Clas: AstrAstrol (circlc one Seck help from your TA, pofessar, or classmates ifyou need t, hut al work must he your on. Sho levant woik on quantitative pohlcms. Homewark is duc during class on Friday, Oetoher 20th. f you won't in class on the date due, arange to get it to your TA hefore the start of class. This hoework is ath a total of 50 points. Latc submissions wil he given half credit until thes aic nosted i-I weck latr) 1) Solar System Patterns and Formation: elo ac a set of diss ahout a hythctical sola sysem aound a distant tai. Briefly explain, given whatwe kno about basphysies and the foratio our Solar System, why thesc discoveries arc siprising o not. [5 pts cach] a) The syste as nc nlanet all of whic orb approimately the same pla. Hwever, te the innermost lancts rbit the sta clockwisc while theresit counterelnekwisc. b) The ive plancts closest to the star arc gas giants whehe oter our ar te planets. c) The fourth planet, a largc gas giant, has wsets of rngs. Thes rings orhit appoximatel the same distanee fronm the plane ut inclined at an angl of 5 degres to cach other. d) The fith planct is a oeky planet tentimes more massiv atmonphere. than t has a ncky surface andhn, Mars-likcExplanation / Answer
a) The star's gravitational pull on the innermost planet's very dense atmosphere could have caused strong atmospheric tides. Such tides, combined with friction between those planet's mantle and core, could have caused the orbital motion to be clockwise in those cases.
b) It is suprising that five planets are gas giants while others are terrestrial. This would probably mean that the star is very closer to those ones due to which no atmosphere can exist on them.
c) This may be possible. As is the case with Uranus in our solar system.
d) This is suprising as a planet so massive, and it exists in terrestrial form, also being so far away from the star is unexpected.
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