meune,an undiscovered nint, dubbed Planet X. Loies ected in ts of Uranus and Neptune, and devoted t years of o trying tofind t ain tunately, least partly exed by , and to abeyance e. ly as a ing attention a), tory directors decided to resume to t end ombaugh.
tombaugraining as an astronomer, but and ute,and after a year’s patient searcted Pluto, a faint point of ligtery firmament. It all triking tions on ence of a planet beyond Neptuneproved to be compreombaug once t tulated, but any reservations ter of t aside in tattended almost any big neory in t easily excited age. t American-discovered planet, and no one o be distracted by t t it a distant icy dot. It o at least partly because t tters made amonogram from Loials. Lo order, and tombaugten, except among planetary astronomers,o revere him.
A feronomers continue to t X out ten times ter, but so far out as to be invisible to us. (Ittle sunlig it o reflect.) t it be a conventional planet like Jupiter or Saturn—it’s mucoo far a;alking perrillion miles—but more like a sun t never quite made it. Moststar systems in tarred), wary sun a sligy.
As for Pluto itself, nobody is quite sure is, or is made of, mosp it really is. A lot of astronomers believe it isn’t a planet at all,but merely t object so far found in a zone of galactic debris kno. t ually tronomer named F. C. Leonard in 1930,but tcive are knos—tcome past pretty regularly—of s (among t visitors ake) come fromtant Oort cloud, about wly.
It is certainly true t Pluto doesn’t act mucs. Not only is it runty andobscure, but it is so variable in its motions t no one can tell you exactly ury s orbit on more or less to’sorbital patipped (as it of alignment at an angle of seventeen degrees, like t tilted rakiss orbit is so irregular t for substantialperiods on eacs lonely circuits around t is closer to us tune is. Formost of tune tem’s most far-flung planet.
Only on February 11, 1999, did Pluto return to tside lane, to remain fo