Timeline for Is the closest planet to another planet always the innermost planet?
Current License: CC BY-SA 4.0
32 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 8, 2021 at 21:00 | answer | added | Jason Goemaat | timeline score: 4 | |
| Nov 6, 2021 at 10:57 | answer | added | d_e | timeline score: 4 | |
| Nov 4, 2021 at 12:27 | comment | added | Carl Witthoft | @Acccumulation LOL | |
| Nov 4, 2021 at 5:41 | comment | added | Acccumulation | "Mercury is the nearest planet to Earth—and to every other planet in the solar system." Nonsense. Earth is the closest planet to Earth. | |
| Nov 4, 2021 at 5:39 | comment | added | Acccumulation | @CarlWitthoft For low eccentricity, aren't they close to the same thing? Unless you're measuring the angle from the planet, rather than from the star. | |
| Nov 4, 2021 at 0:50 | answer | added | Loren Pechtel | timeline score: 3 | |
| Nov 2, 2021 at 18:26 | answer | added | PM 2Ring | timeline score: 11 | |
| Nov 2, 2021 at 10:42 | comment | added | HenricF | See also "Which Planet is the Closest", by CGP Grey: youtube.com/watch?v=SumDHcnCRuU | |
| Nov 2, 2021 at 10:35 | comment | added | Pete Kirkham | @Constantthin it's certainly more interesting than a question whose answer is the same for every planet | |
| Nov 2, 2021 at 0:15 | comment | added | Constantthin | @Pete Kirkham. Granted. But wouldn’t you agree that my version has an interesting slant to? | |
| Nov 1, 2021 at 22:38 | comment | added | Gerardo Furtado | @IvoBeckers that's in my opinion worthy of an answer, because that's precisely one of scenarios that, as a layman, I imagined for breaking this "rule". So, is it really possible two planets having the same orbital period? | |
| Nov 1, 2021 at 21:11 | answer | added | M. A. Golding | timeline score: 3 | |
| Nov 1, 2021 at 20:22 | answer | added | Connor Garcia♦ | timeline score: 6 | |
| Nov 1, 2021 at 18:14 | comment | added | Pete Kirkham | @Constantthin it's talking about the average over the path. The places when planet B is in-line sun-side and opposite side cancel each other out to average the same as the planet A's orbital radius irrespective of the radius of B. In the places when planet A, the sun and planet B form a triangle, the AB distance is the longest side of a triangle where the other two sides are the orbital radii of A and B, so the bigger the orbital radius of B the bigger that triangle is, and so the bigger the average distance between A and B. | |
| Nov 1, 2021 at 15:43 | answer | added | Michael Richardson | timeline score: 2 | |
| Nov 1, 2021 at 13:25 | comment | added | Carl Witthoft | Warning make sure you identify what the parameter is that you are averaging over! I suspect most of us expect the average with respect to time. But if one chooses to take the average over, say, angle of the orbits ( rho -theta coordinates), things will come out rather differently. | |
| Nov 1, 2021 at 13:04 | comment | added | Ivo | not worthy of an answer I think, but a theoretical example for which it's not the case is when 2 planets have exactly the same orbital period. Their distance will be fixed and could possibly have a shorter distance to each other than to the innermost planet. But this is an exception and I think in all other cases it's true | |
| Nov 1, 2021 at 10:40 | answer | added | Glorfindel | timeline score: 14 | |
| Nov 1, 2021 at 10:32 | answer | added | Gnubie | timeline score: 7 | |
| Nov 1, 2021 at 8:18 | history | became hot network question | |||
| Nov 1, 2021 at 6:00 | history | tweeted | twitter.com/StackAstronomy/status/1455051993345634305 | ||
| Nov 1, 2021 at 3:55 | answer | added | Justin T | timeline score: 7 | |
| Nov 1, 2021 at 3:33 | comment | added | Constantthin | The way I thought you ment was if the planet of the sun-side of a planet always is closer than the closest planet on the peripheral side? In other words why is Mercury closer to Venus than Earth. Venus closer to Earth than Mars. Mars closer to Jupiter than Saturn. Jupiter closer to Saturn than Uranus. Saturn closer to Uranus than Neptune. And if there is a cosmic rule prescribing this phenomen universally? | |
| Nov 1, 2021 at 3:24 | comment | added | Gerardo Furtado | @uhoh Thanks, your edit is fine. Actually, since this subject is not exactly clear (as I found out because your and John's comments!) I could make this question initially only about simple planetary systems (that is, "is the innermost planet always the closest planet to the others giving all orbital distances and speeds?"), then asking a new question for binary systems, which was my original curiosity. | |
| Nov 1, 2021 at 3:15 | comment | added | uhoh | @GerardoFurtado Thanks and very cool! I've made some edits to your question to reflect what's in your comments, and looking forward to seeing some answers as well! Feel free to edit further. | |
| Nov 1, 2021 at 3:13 | history | edited | uhoh | CC BY-SA 4.0 |
clarified question to match the information provided by the OP in comments; edited tags
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| Nov 1, 2021 at 2:56 | comment | added | Gerardo Furtado | @uhoh physicstoday.scitation.org/do/10.1063/PT.6.3.20190312a/full | |
| Nov 1, 2021 at 2:54 | comment | added | Gerardo Furtado | @JohnHunt Yes, I'm talking about average. Mercury is indeed the closest planet (on average) to Earth, and to all other 7 planets as well. | |
| Nov 1, 2021 at 1:23 | comment | added | JohnHunt | To follow up on uhoh's comment, Mercury is not the closest planet to any planet expect Venus. There is an oddity where Mercury is -On Average- the closest planet to Earth because Venus' orbit carries it to the far side of the Sun further than does Mercury's. Is that what you're asking about? | |
| Nov 1, 2021 at 0:44 | comment | added | uhoh | "...Mercury is not only the closest planet to Earth..." Hmm... Mercury is not the closest planet to Earth. Venus is the planet that gets closest to Earth. | |
| S Nov 1, 2021 at 0:18 | review | First questions | |||
| Nov 1, 2021 at 4:47 | |||||
| S Nov 1, 2021 at 0:18 | history | asked | Gerardo Furtado | CC BY-SA 4.0 |