|  Solar System Planets | 
In General > s.a. earth; history of astronomy;
  orbits of gravitating bodies [including cosmological effects].
  * Formation: Probably
    together with, or shortly after a star, from leftover gas and
    dust, by formation and merger of protoplanets; Turbulent and poorly
    understood; However, it seems that planet formation is easy, and is
    a mechanism for loss of angular momentum for the star.
  * History: In the III
    century BC Epicurus wrote to Herodotus about the infinitely many worlds,
    probably inhabited; According to Aristotelians a moving body could not
    be the center of another movement; When Galileo discovered Jupiter's
    satellites, some said that they were illusions created by the telescope
    (others laughed).
  * Moons: Most of them probably
    formed from rings around the planets, possibly including Earth's moon.
  * Prebiological
    conditions: Titan (Saturn), Europa (Jupiter).
  @ General references: NS(90)feb10 insert;
    issue pw(97)oct;
    Morrison & Owen 03 [II];
    Sobel 05;
    Melosh 11 [planetary surfaces].
  @ Jovian planets: Miner PT(90)jul [Voyager 2];
    Sukoriansky et al PRL(02) [cloud bands and energy dissipation].
  @ Formation and evolution: Ida et al ApJ(00)ap/99 [early solar system];
    Malhotra SA(99)sep [migration];
    Rafikov AJ(03)ap/02,
    AJ(03)ap/02,
    AJ(03)ap/02;
    news pw(06)sep
      [terrestrial planet formation and jovian migration];
    Herndon ap/06 [against migration];
    Woolfson 07;
    Youdin a0807-ln [from grains to planetesimals];
    Mosqueira et al SSR(10)-a0906-in [formation of satellite systems];
    Minton & Malhotra Nat(09)-a0906 [record of migration];
    Morbidelli et al AJ(10)-a1009 [migration of Jupiter and Saturn];
    Jacobson & Walsh a1502-in [terrestrial planets];
    Izidoro et al A&A(15)-a1506
  @ Orbital parameters:
    Lefloch ap/02;
    Page et al ApJ(09)-a0905 [outer planets, astrometric determination];
    Tremaine ApJ(15)-a1504 [statistical mechanics].
  @ Moons: Jewitt et al SA(06)aug;
      news SA(13)feb [formation].
  @ Related topics: McBreen & Hanlon ap/99/A&A [GRBs];
    Korycansky et al ApSS(01)ap [orbit engineering];
    Soter AJ(06)ap,
    SA(07)jan,
    Basri & Brown AREPS(06)ap [definition of planet];
    Sánchez-Lavega 11 [atmospheres];
    Pierrehumbert PT(11)jan [infrared radiation and planetary temperature];
    > s.a. Titius-Bode Law.
Individual Planets and Their Satellites
  > s.a. tests of general relativity with orbits.
  * Saturn ring formation:
    Two popular scenarios are the tidal splitting of passing comets and the
    collisional destruction of a satellite.
  @ Mercury: Nelson SA(97)nov;
    Peale Icarus(05)ap [precession and libration];
    Solomon Sci(07)may
    + pw(07)may [molten core];
    Correia & Laskar Icarus(09)-a0901 [capture into 3/2 spin-orbit resonance];
    Solomon PT(11)jan;
    Noyelles et al Icarus(14)-a1307 [spin-orbit evolution];
    news pt(14)jun [model dynamo may solve magnetic field mystery];
    Roig et al ApJL(16)-a1603 [Mercury's orbit and the jumping Jupiter model].
  @ Venus:
    Grinspoon ThSc(93)jul [plate tectonics?];
    Solomon PT(93)jul [geophysics];
    SA(94)apr, p90 [Pioneer];
    Bullock & Grinspoon SA(99)mar [climate change];
    Fowler & O'Brien PRS(03) [plate tectonics model];
    Dick SA(04)may [8 jun 2004 transit];
    Taylor pw(08)feb [Venus Express results];
    Sheppard & Trujillo Icarus(09)-a0906 [survey for satellites];
    Shiltsev a1206/JAHH,
    comment Sheehan & Pasachoff PT(13)jul [atmosphere, Lomonosov's 1761 discovery];
    Way et al GRL(16)-a1608 [inhabitable in the past?];
    news sn(20)oct [doubts over phosphine detection in the atmosphere[.
  @ Mars: Golombek SA(98)jul [Mars Pathfinder];
    Zorpette SA(00)mar,
    Musser & Alpert SA(00)mar [re going to Mars];
    Albee SA(03)jun [landscapes];
    Christensen SA(05)jul [diversity];
    Hanford & Long ASA(06) [sound propagation];
    Bell SA(06)dec [watery past];
    Jones IJAB(08)-a0811 [history];
    news sfn(12)feb [Mars strategy];
    news cnn(15)sep [water confirmed];
    Ronnet et al ApJ(16)-a1607,
    news pt(16)jul [satellites];
    Vasavada PT(17)mar;
    Brasser EPSL(17)-a1704 [formation].
  @ Jupiter:
    news PT(96)jul [Io's magnetic field];
    Guillot PSS(99)ap [interior];
    Pappalardo et al SA(99)oct,
    Greenberg AS(02) [possible sea and biosphere on Europa];
    Johnson SA(00)feb [Galileo mission];
    Icarus(04)169#1 [Io],
    Icarus(05)177#2 [Europa];
    Henrard Icarus(05) [Io rotation];
    Canup & Ward a0812 [formation of Galilean satellites];
    Greenberg RPP(10) [icy satellites].
  @ Saturn: news Sci(96)apr [updates];
    Lunine SA(04)jun,
    Porco AS(07)jul [Cassini mission];
    Charnoz et al Icarus(09)-a0809 [ring formation];
    Iorio OAJ(10)-a0907 [perihelion precession and interpretation];
    Whiting a1112 [Sir John Herschel and the stability of the rings];
    Nesvorný & Vokrouhlický ApJ(16)-a1602 [orbital migration was grainy];
    > s.a. quantum-to-classical transition [Hyperion].
  @ Titan: Lumine AS(94);
    Lebreton pw(06)feb;
    Lorenz PT(08)aug;
    Lorenz & Sotin SA(10)mar.
  @ Enceladus: Porco SA(08)dec;
    Spencer PT(11)nov;
    news PT(16)mar [turbulent dissipation and water eruptions].
  @ Other Saturn moons:
    Freire ap/05,
    Ip GRL(06) [Iapetus, mystery];
    Farmer & Goldreich Icarus(06) [Prometheus and Pandora];
    Coradini et al EMP(09)-a0906-conf [Cassini results]. 
  @ Uranus: Parisi et al A&A-a0801 [the Great Collision];
    Podolak & Helled ApJL(12)-a1208 [and Neptune];
    Turrini et al a1402
      [the ODINUS concept, twin missions to Uranus and Neptune].
  @ Neptune, discovery: Sheehan et al SA(04)dec [prediction and discovery];
    Kent PT(11)dec [aftermath];
    Krajnović A&G(16)-a1610.
  @ Neptune, moons: Stern & McKinnon AJ(00)ap/99 [Triton–cratering, activity];
    Nogueira et al Icarus(11)-a1105 [origin of Triton].
Related Topics
  > s.a. history [geocentric vs heliocentroc models].
  *  Planet X? See books by
    Sitchin supposedly based on Sumerian records; Possible scenarios are a
    rock-ice planetoid with mX =
    0.7 mE at some 100 – 200
    au, or a Jovian body with mX
    = 5 mJ at about 10,000 –
    20,000 au; 2005, Reports that 2003 UB313, Xena, at a ≈
    97 au, is 20% larger than Pluto – and has a moon; 2014, Discovery of
    Sedna-like dwarf planet 2012 VP113.
  *  Planet Nine? 2016,
    Candidate with possible semimajor axis 700 au, eccentricity 0.6, inclination
    30°, argument of perihelion 150°; 2010, Semimajor axis 400–800 au,
    eccentricity 0.2–0.5, apparent magnitude > 22.5, mass 5–10
    M⊕; Its presence could explain the unusual clustering of
    orbits for a group of extreme trans-Neptunian objects.
  @ Additional planets / Planet X: Iorio MNRAS(09)-a0904 [constraints from inner solar system dynamics];
    news pw(11)nov [was a giant planet ejected from the solar system?];
    Iorio CMDA(13)-a1301 [constraints from the New Horizons spacecraft];
    Iorio MNRAS(14)-a1404,
    FASS(17)-a1407 [new constraints];
    Cloutier et al ApJ(15)-a1509 [fifth giant planet ejected?];
    Malhotra a1711-proc [rev].
  @ Planet Nine: Iorio ASS(17)-a1512 [Telisto–where is it?];
    Batygin & Brown AJ(16)-a1601 [new evidence];
    Fienga et al A&A(16)-a1602 [constraints from Cassini data];
    de la Fuente Marcos & de la Fuente Marcos MNRAS(16)-a1603 [Monte Carlo approach];
    Brown & Batygin ApJL(16)-a1603,
    Holman & Payne ApJ(16)-a1603  [constraints on the orbit and location];
    Gomes et al ApJ(17)-a1607 [and the inclination of the planetary system];
    news cosmos(19)jan [Planet Nine or a massive disc?];
    Brown PT(19)mar;
    Witten a2004 [primordial black hole?];
    Scholtz & Unwin PRL(20) [primordial black hole?];
    Napier et al a2102 [no clustering evidence];
    > s.a. Wikipedia page.
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