Talk:Vanguard 2
| This is the talk page for discussing improvements to the Vanguard 2 article. This is not a forum for general discussion of the article's subject. |
Article policies
|
| Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
 | The article contains orbital elements which are automatically updated by a bot. Updates usually occur on alternate Saturdays. For more details, please see Template:Orbit. |  |
 | A fact from this article was featured on Wikipedia's Main Page in the On this day section on February 17, 2005, February 17, 2006, February 17, 2007, February 17, 2016, February 17, 2022, and February 17, 2023. |
 | This article is rated C-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||
| ||||||||||||||||||||||||
pictures
editAny published examples of the output from the optical scanners? 147.145.40.43 21:27, 17 February 2007 (UTC)
Atmospheric drag speeds up spacecraft
editAtmospheric drag does not cause spacecraft to "lag" expected positions (as stated), rather they lead, as they lose altitude and orbit faster. I do not have a reference for this specific to Vanguard 2, but the principle is universally known to astro-dynamicists and physicists. The Wikipedia articles on orbits and orbital mechanics must explain it.
On a very short time scale (much less than one orbit), the spacecraft is indeed slowed, but is immediately shifted into a slightly lower orbit, quickly causing it to speed up. As a result, it moved progressively ahead of its expected, unperturbed. orbital positions, both in angle and in distance. Wwheaton (talk) 01:40, 17 February 2016 (UTC)
First photo
editThe first photo of earth from a satellite was by Explorer 6, not Vanguard 2. See Satellite imagery. Vanguard 2 was incapable of imaging. It had two light sensors that just provided an intensity reading, no pixels. The source cited for "first photo" does not say that Vanguard 2 took the first satellite photo of earth. Kendall-K1 (talk) 15:56, 17 February 2016 (UTC)
External links modified (January 2018)
editHello fellow Wikipedians,
I have just modified one external link on Vanguard 2. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
- Added archive https://web.archive.org/web/20160210031851/http://www.astronautix.com/craft/vanuard2.htm to http://www.astronautix.com/craft/vanuard2.htm
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).
- If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
- If you found an error with any archives or the URLs themselves, you can fix them with this tool.
Cheers.—InternetArchiveBot (Report bug) 09:26, 23 January 2018 (UTC)
Broken infobox (March 2022)
editHi all, infobox is currently broken. I've no idea how to fix it unfortunately, I've looked over it a few times but I can't see anything obvious. Cheers. 27.33.21.122 (talk) — Preceding undated comment added 14:39, 8 March 2022 (UTC)