User Panel
User Panel
User Panel
|
Posted: 9/14/2019 9:25:12 PM EDT
[#1]
My definition of a planet is a body large enough that its gravity pulls it into a spherical shape.
So, by my standard, Jupiter would still be a planet. Of course, by my standard, Pluto is still a planet. I am not an astronomer. You have probably guessed that by now. Supposedly, there is a large planet we don't know where it is, but it is out there, and its gravity affects the orbits of our known planets. I see no reason why a planet could not exist without a star. Probably formed in a solar system, but some how left it. How?, I don't know. 
|
|
|
|
Posted: 9/14/2019 9:35:45 PM EDT
[#2]
Quote HistoryQuoted:
My definition of a planet is a body large enough that its gravity pulls it into a spherical shape. So, by my standard, Jupiter would still be a planet. Of course, by my standard, Pluto is still a planet. I am not an astronomer. You have probably guessed that by now. Supposedly, there is a large planet we don't know where it is, but it is out there, and its gravity affects the orbits of our known planets. I see no reason why a planet could not exist without a star. Probably formed in a solar system, but some how left it. How?, I don't know. |
|
|
|
Posted: 9/14/2019 9:39:24 PM EDT
[#3]
It'd be a rogue planet.
|
|
|
|
Posted: 9/14/2019 9:43:43 PM EDT
[#4]
Your definition of planet would also include our moon and several other moons and asteroids in the solar in the solar system. 
|
|
|
|
Posted: 9/14/2019 11:18:03 PM EDT
[#5]
Quote HistoryQuoted:
It'd be a rogue planet. |
|
|
|
Posted: 9/14/2019 11:53:01 PM EDT
[#6]
Quote HistoryQuoted:
It'd be a rogue planet. I think asteroids tend to be grouped up space trash that compacted a bit or ejections from planets but never had a molten core and also don’t meet the requirements for gas giants. Then there’s the classification of Pluto. Celestial dwarf? (although this seems arbitrary and petty) There’s a rick and Morty that discusses that. If you love space, check out The Planets series. There’s an older bbc one and then a science channel newer one. Absolutely amazing shit. Also the SciShow YouTube channel has some great info. Being as old as I am, I still learn jaw dropping crap about space and planets all the time. Ie theorized Jupiter has a core of metallic hydrogen that is what causes its massive magnetic field. Also supposedly rains diamonds there. Another thing I recently learned is that out galaxy's supermassive black hole started feeding again overnight and it’s developed a quasar (which was mistaken for being a bright star in a similar region of space) which has the potential to sterilize the entire galaxy. |
|
|
|
Posted: 9/15/2019 12:07:25 AM EDT
[#7]
I made a thread in GD about this a few years back.
3 main criteria. 1) in orbit around the sun (see exemption for rogue planets) 2) enough mass to pull itself into a rounded shape 3) clears its own orbit and the area around it, in other words anything nearby is either eaten or cast away. #3 is what tends to eliminate asteroids and whatnot. So if you think about it...hamplanet isn't exactly an inaccurate term for a really fat person. 
|
|
|
|
Posted: 9/15/2019 12:44:03 AM EDT
[#8]
Jupiter is a gas giant
with a significant amount of input, it could be a brown dwarf star |
|
|
|
Posted: 9/15/2019 1:01:03 AM EDT
[#9]
Quote HistoryQuoted:
Jupiter is a gas giant with a significant amount of input, it could be a brown dwarf star |
|
|
|
Posted: 9/15/2019 1:29:52 AM EDT
[#10]
Somewhere between rogue planet and brown dwarf.
Jupiter radiates more energy than it receives from the Sun. |
|
|
|
Posted: 9/26/2019 1:19:16 PM EDT
[#11]
It would be a rogue plant. There's lots of them out in deep space.
|
|
|
|
Posted: 9/26/2019 1:20:48 PM EDT
[#12]
Quote HistoryQuoted:
Jupiter is a gas giant with a significant amount of input, it could be a brown dwarf star |
|
|
|
Posted: 9/26/2019 1:40:07 PM EDT
[#13]
I would be less concerned about Jupiter's current designation and more concerned about our total lack of asteroid protection at that point.
Jupiter is a supermassive shield for Earth that pulls in a lot of the incoming stuff that'd destroy our planet. |
|
|
|
Posted: 11/24/2019 9:55:27 AM EDT
[#14]
Quote HistoryQuoted:
Your definition of planet would also include our moon and several other moons and asteroids in the solar in the solar system. Quote HistoryQuoted:
Your definition of planet would also include our moon and several other moons and asteroids in the solar in the solar system. A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals |
|
|
|
Posted: 9/28/2020 8:04:31 PM EDT
[#15]
Quote HistoryQuoted: I made a thread in GD about this a few years back. 3 main criteria. 1) in orbit around the sun (see exemption for rogue planets) 2) enough mass to pull itself into a rounded shape 3) clears its own orbit and the area around it, in other words anything nearby is either eaten or cast away. #3 is what tends to eliminate asteroids and whatnot. I still find #3 a bit troubling. Put earth in a 2:3 resonant orbit with a gas giant and it's no longer a planet simply because of its neighbors. Convenient if you wan't to disregard a lot of objects, but that seems the primary reason for inclusion of this rule. Likewise, if you were to nudge pluto into an orbit of it's own, suddenly it magically becomse a planet again. #3 is just too arbitrary for me. To get around the "we teach kids 350+ planets", I think it would have been better to say "The 9 Cannonical Planets" including Pluto, and then just deal with the fact that you have a lot of minor planets and planetssimals, of which Pluto really is one but it seemed uncouth and revisionist to oust it from it's station. Not that my view really matters. |
|
|
|
Posted: 11/14/2020 4:57:30 PM EDT
[#16]
Gee gosh, if only there were words to describe that. It's like nobody in science has ever thought of what a non-gravitationally bound planetoid would be called, or even if it were possible. Truly you are a trailblazer, OP.
|
|
|
|
Posted: 11/14/2020 5:15:10 PM EDT
[#17]
Its a gas giant
it could almost be a star |
|
|
|
Posted: 11/15/2020 6:13:14 PM EDT
[#18]
Quote HistoryQuoted: Its a gas giant it could almost be a star If by almost, you mean that it only needs to increase its mass by about 70 times, then yes, "almost" a star (lightest known red dwarf star, EBLM J0555-57Ab, is approximately 70 times the mass of Jupiter, though it is much more dense, actually having a smaller diameter). Mike |
|
|
|
Posted: 11/15/2020 6:19:32 PM EDT
[#19]
Or densify itself by being consumed by alien von neumann machines.
Attempt no landing... |
|
|
|
Posted: 4/9/2021 11:05:19 AM EDT
[#20]
Of course, it would be a rough planet, but by no means a brown dwarf. But can I ask you why you decided that Jupiter could leave Solar System?
|
|
|
|
Posted: 4/9/2021 2:08:40 PM EDT
[#21]
Almost, for lage orders of almost
|
|
|
|
Posted: 5/11/2021 4:25:09 PM EDT
[#22]
It would be a rogue planet.
|
|
|
|
Posted: 7/17/2021 9:26:17 PM EDT
[#23]
Jupiter is a 'Gas Giant', totally incapable of ever being classified as an asteroid.
|
|
|
|
Posted: 7/17/2021 10:46:34 PM EDT
[#24]
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
