Template:Did you know nominations/Landsat 4


 * The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as |this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.

The result was: promoted by Cwmhiraeth (talk) 06:22, 8 December 2018 (UTC)

Landsat 4

 * ... that the Landsat 4 (museum model pictured) was in operation even after the decommissioning of Landsat 5, which was launched earlier than scheduled to replace it?
 * Reviewed: Wang Enduo

Improved to Good Article status by Kees08 (talk). Nominated by Coffeeandcrumbs (talk) at 04:31, 11 October 2018 (UTC).


 * Alt1 ... that the Landsat 4 was in operation for 19 years, exceeding its five-year life expectancy?
 * How is this? We can go with no image since the primary image is actually supposed to be of the Landsat 5. --- Coffee  and crumbs  05:29, 12 October 2018 (UTC)
 * Well, according to the infobox it's a drawing of an identical satellite, so I don't think it would be dishonest to run it with a caption stating "Artist's rendition of an identical satellite". No image is also another option, but in that case one would have to add the word "satellite" to the hook for clarity. As for the hook, how about the following? Catrìona (talk) 06:35, 12 October 2018 (UTC)
 * Well, according to the infobox it's a drawing of an identical satellite, so I don't think it would be dishonest to run it with a caption stating "Artist's rendition of an identical satellite". No image is also another option, but in that case one would have to add the word "satellite" to the hook for clarity. As for the hook, how about the following? Catrìona (talk) 06:35, 12 October 2018 (UTC)


 * Alt2 ... that Landsat 4 (pictured) was in operation for 19 years, nearly four times as long as originally intended?
 * I am OK with any of the above. QPQ now done. --- Coffee  and crumbs  08:25, 26 October 2018 (UTC)
 * Symbol redirect vote 4.svg We need a new reviewer for ALT1 and/or ALT2. Catrìona (talk) 09:32, 26 October 2018 (UTC)
 * Symbol confirmed.svg Approving both, although I think ALT2 is the slightly better hook. Rest of the review per above. Narutolovehinata5 tccsdnew 00:48, 30 October 2018 (UTC)

sorry, I've had to pull this one from the next queue due to issue raised by. The article does not include a reference for the life-expectancy of five years (and actually sources seem to say what the article said below, which was that it was a minimum of three years). It would also seem more honest to say it ran for eleven years rather than nineteen, as that's when it was sending useful data, and are the headline dates given in the same source I mention. Thanks &mdash; Amakuru (talk) 10:24, 9 November 2018 (UTC)
 * Here is a new blurb that maybe better:
 * Alt3 ... that Landsat 4 (pictured) was powered by nickel–cadmium batteries charged by single solar array?
 * Pinging a major contributor.
 * Symbol redirect vote 4.svg New review needed.--- Coffee  and crumbs  11:01, 9 November 2018 (UTC)
 * Honestly, as a space buff, ALT3 is very pedestrian. I'm not sure if it could interest a general audience, but it doesn't really seem interesting. Narutolovehinata5 tccsdnew 12:34, 9 November 2018 (UTC)

I'll propose one: I'm open to any tweaks, simplifications, etc. Best, Mifter (talk) 23:20, 3 December 2018 (UTC)
 * Can you please propose a new hook? I've struck ALT3 as not being interesting to a broad audience. Narutolovehinata5 tccsdnew 03:29, 29 November 2018 (UTC)
 * Last call for hooks. If no new hook is proposed by Friday, this will be marked for closure. Narutolovehinata5 tccsdnew 23:43, 2 December 2018 (UTC)
 * A little after Friday, but how about:
 * ALT6 ... that a partial failure of Landsat 4's solar array was the reason for an early launch of Landsat 5?
 * I usually do not do DYK, and if this is far from good enough, we can probably close the nomination.  Kees08  (Talk)   06:28, 5 December 2018 (UTC)
 * Your thoughts on Mifter's proposal? Courtesy ping . Narutolovehinata5 tccsdnew 07:00, 5 December 2018 (UTC)
 * Oh, I thought that happened earlier because I am bad at reading..looks good to me. If memory serves, it could transmit data still, just not directly, something to double check prior to approving ALT5. If that is good, then ALT5 seems like a fine hook to me.  Kees08  (Talk)   19:55, 5 December 2018 (UTC)
 * I'm ready to approve ALT5, I'm just waiting for Coffeeandcrumbs to leave their thoughts. As for the part about transmission, it actually seems accurate to me (the hook doesn't say it stopped transmitting data, only that it didn't work as intended anymore). Narutolovehinata5 tccsdnew 23:22, 5 December 2018 (UTC)
 * ALT5 - ... that despite Landsat 4 suffering a partial power failure in 1983 that stopped it from transmitting most scientific data, it continued broadcasting telemetry, tracking, and command data until 2001?
 * Seems interesting, but I'd first like to hear the nominator's thoughts. Narutolovehinata5 tccsdnew 03:38, 4 December 2018 (UTC)
 * The Landsat 4 lost data trasmission in two separate instance. The first was due to power failure then it became functional again by transmitting the data through a relay station. It failed again in 1993 but we do not have a source to verify that the second failure was also due to a power failure.
 * ALT7 - ... that despite Landsat 4 suffering a second failure in 1993 that stopped it from transmitting most scientific data, it continued broadcasting telemetry, tracking, and command data until 2001?
 * How about this version that is less specific about why it lost scientific data the second time? --- Coffee  and crumbs  19:17, 7 December 2018 (UTC)
 * Symbol confirmed.svg - that looks good to me.  Length, Date, Cite, QPQ, and Earwigs check.  ALT7 is approved.  Mifter (talk) 02:43, 8 December 2018 (UTC)