The case for, and against, the still-unseen Planet 9
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The case for, and against, the still-unseen Planet 9
1–10 of 40 posts
Re: The case for, and against, the still-unseen Planet 9
#2It's called Pluto and it's a planet - Jerry
Re: The case for, and against, the still-unseen Planet 9
#3It's called Pluto and it's a planet - Jerry
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Re: The case for, and against, the still-unseen Planet 9
#4I love that this is still a topic-- along with 'is glass a fluid', this is one of the few questions I recall from childhood that turns out to still be relevant serious physics.
(Re 'is glass a fluid', my condensed matter professor said something like 'if it is, it flows too slowly to observe significant movement in the lifetime of the universe'.)
Re: The case for, and against, the still-unseen Planet 9
#5It's called Pluto and it's a planet - Jerry
I think your counting's off: if you want to count dwarfs then Ceres would be "Planet 5", in which case "Planet 9" would be Neptune most of the time, since only a small part of Pluto's orbit crosses inside Neptune's.
Pluto's number would also depend on the current location of at least Quaoar, Haumea and Makemake, since I know their orbits cross inside Pluto's. Pluto may also swap numbers over time with others, like Sedna, Eris, Gonggong, Orcus, Salacia, Varda, Ixion, 2003 AZ84, 2002 MS4, 2002 AW197, etc. since they have quite low perihelia (30 to 40 AU) so may also cross inside Pluto's orbit.
Dwarf planets seem to be lucrative business for those who sell wall posters of the solar system. I would hate having to learn all of their relative locations and interactions in school!
Re: The case for, and against, the still-unseen Planet 9
#6It's called Pluto and it's a planet - Jerry
Pluto got re-categorized as dwarf planet because there were now more like it. Therefore, if you still want to call it a planet, it definitely wouldn't be the 9th one.
Re: The case for, and against, the still-unseen Planet 9
#7It's called Pluto and it's a planet - Jerry
I think your counting's off: if you want to count dwarfs then Ceres would be "Planet 5", in which case "Planet 9" would be Neptune most of the time, since only a small part of Pluto's orbit crosses inside Neptune's. Pluto's number would also depend on the current location of at least Quaoar, Haumea and Makemake, since I know their orbits cross inside Pluto's. Pluto may also swap numbers over time with others, like Se…
Parent quoted a line of a Rick&Morty episode and was probably not serious ;)
Re: The case for, and against, the still-unseen Planet 9
#8Earlier quoted context omitted.
I think your counting's off: if you want to count dwarfs then Ceres would be "Planet 5", in which case "Planet 9" would be Neptune most of the time, since only a small part of Pluto's orbit crosses inside Neptune's. Pluto's number would also depend on the current location of at least Quaoar, Haumea and Makemake, since I know their orbits cross inside Pluto's. Pluto may also swap numbers over time with others, like Se…
Parent quoted a line of a Rick&Morty episode and was probably not serious ;)
Personally - even if the comment wasn't serious I am glad it received a serious answer which redeemed the original comment. Most of the time I choose to downvote low effort comments like semi-relevant quotes from pop culture, because it triggers my post-traumatic ticks from past reddit experience.
Re: The case for, and against, the still-unseen Planet 9
#9Earlier quoted context omitted.
I think your counting's off: if you want to count dwarfs then Ceres would be "Planet 5", in which case "Planet 9" would be Neptune most of the time, since only a small part of Pluto's orbit crosses inside Neptune's. Pluto's number would also depend on the current location of at least Quaoar, Haumea and Makemake, since I know their orbits cross inside Pluto's. Pluto may also swap numbers over time with others, like Se…
Parent quoted a line of a Rick&Morty episode and was probably not serious ;)
It is a joke related to the episode 9 of the first season of Rick and Morty, where Jerry (the dad of Morty) does not want to change his belief concerning this fact he learned in highschool and make a big fuzz about it.
Re: The case for, and against, the still-unseen Planet 9
#10The theory which most fascinates me is that it's not a planet at all, but a primordial black hole with a diameter of ~5cm.