Talk:Neptune

Please fix this sentence

“Neptune is slightly more massive [than Uranus], but denser and smaller.”

The sentence contradicts itself, and Neptune is in fact smaller than Uranus. Ahumanfromspace (talk) 19:16, 8 March 2025 (UTC)

Where's the contradiction? It says that Neptune has greater mass than Uranus, but smaller volume. Double sharp (talk) 08:20, 9 March 2025 (UTC)

The image of Earth and Neptune size comparison is not enough accurate

[Issue originally noted in this Reddit post]

Per https://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html, the ratio of Earth and Neptune's equatorial radius should be 3.883. However the ratio in the current image is at most 3.65, which is an notable error. 七战功成 15:15, 15 March 2025 (UTC)

I've reconstructed the image and uploaded it as a file revision to Commons. Is that good? Remsense ‥ 论 15:51, 15 March 2025 (UTC)

I measured it with the ruler function on iPhone. The equatorial diameter of the Earth is about 1.3 cm and Neptune is about 5, so the ratio is about 3.846. Is this the same as your measurement? By the way, the two were stretched a little further than previous version. I think it would be better if they are closer. 七战功成 (talk) 16:11, 15 March 2025 (UTC)

Earth is 259 pixels across, and Neptune is 1006 pixels across: $1006/259\approx 3.8841...$ This is the best that can be done, with the bottleneck being the resolution of the original Neptune photo. Remsense ‥ 论 16:16, 15 March 2025 (UTC)

Ok, this should be the best. Now you can replace the previous one in the article.七战功成 (talk) 16:31, 15 March 2025 (UTC)

By the way, It seems that the image of Neptune had some portion of Neptune’s rightmost part covered in darkness. Maybe we need to consider and count them. 七战功成 (talk) 16:34, 15 March 2025 (UTC)

Right! With that also in mind Earth could be one pixel bigger maybe, but maybe not. Remsense ‥ 论 16:41, 15 March 2025 (UTC)

I uploaded it as a revision to Commons, so it should replace the previous once you clear your cache. Remsense ‥ 论 16:42, 15 March 2025 (UTC)

It’s strange that the image displayed on the main page of the article is still the original version, but when I got into the file page it shows the current one. I refreshed the page several times and even exited safari and reopened it, but it’s still the same. zhehan 七战功成 (talk) 16:52, 15 March 2025 (UTC)

It's there, and should reflect for readers when the cache is cleared, don't worry. Remsense ‥ 论 16:53, 15 March 2025 (UTC)

Ok, so it would take sometime for the cache to be cleared to show the new version on the main page? zhehan 七战功成 (talk) 16:55, 15 March 2025 (UTC)

Or you can google how to clear it immediately for Safari, should be one or two clicks. Remsense ‥ 论 16:56, 15 March 2025 (UTC)

Yes, it works. Thanks zhehan 七战功成 (talk) 17:02, 15 March 2025 (UTC)

@七战功成 thanks for letting us know! If any other important diagrams have flaws or could be improved generally, let me know. Remsense ‥ 论 16:44, 15 March 2025 (UTC)

Yes, I am relatively interested in this aspect. I will leave messages in talk pages or other related places if I find similar issues. zhehan 七战功成 (talk) 16:54, 15 March 2025 (UTC)

Actually when I checked the ratio, I just stumbled on this page (https://fineartamerica.com/featured/earth-compared-to-neptune-mark-garlickscience-photo-library.html). It looks really good and and the ratio is accurate. (It also has the size comparisons of other three giant planets and the Earth). zhehan 七战功成 (talk) 16:58, 15 March 2025 (UTC)

Wait, error was introduced because I didn't check to ensure the original Neptune photo was vertically centered. (Why should I?). Neptune is 1012 pixels across, and Earth is now 261, ergo $1012/261=3.892...$ , again the best I can do without losing resolution. Uploaded the tweak, where I nudged them closer together while I was at it. Remsense ‥ 论 16:39, 15 March 2025 (UTC)

I saw it. This is good enough. Thanks for your effort. By the way, my previous two replies had a strange word “zhehan” at the end somehow. I already deleted them. Hopefully they didn’t cause any confusion. zhehan 七战功成 (talk) 16:48, 15 March 2025 (UTC)

I assumed that was your signature, ha. Remsense ‥ 论 16:48, 15 March 2025 (UTC)

Oh, yeah, I just forgot. zhehan 七战功成 (talk) 16:52, 15 March 2025 (UTC)

Auroras confirmed on Neptune by James Webb

Request for an update on the section about Neptune's Auroras and James Webb Telescope observation and confirmation of Aurora.

https://science.nasa.gov/missions/webb/nasas-webb-captures-neptunes-auroras-for-first-time/ link for further information and source Kingsterbuddy (talk) 14:42, 26 March 2025 (UTC)

• Kingsterbuddy, if you propose specific content/text, that will make it easier for editors to figure out how to improve the article. You can do it yourself too, of course. Drmies (talk) 14:43, 26 March 2025 (UTC)

Semi-protected edit request on 27 March 2025

Please change "James Challis to search for the it" to "James Challis to search for it". Lucas264 (talk) 02:12, 27 March 2025 (UTC)

 Done Aydoh8^[contribs] 04:45, 27 March 2025 (UTC)