Talk:Halley's Comet

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The Ottoman Empire did not invade the Balkans in that year. I edited that bit and for some unfathomable reason Materialscientist edited it back and I got a message over not engaging in test edits. I'm not going to get into an edit war over this. Someone else can correct the info and deal with whatever turf issues Materialscientist has. (talk)

It was Ruslik0 who reverted you, I've just posted a note on your talk, because you neither explained your edit nor provided a source for it. How comes they besieged Belgrade but did not invade the Balkans? Materialscientist (talk) 09:11, 25 March 2013 (UTC)
Because they had been in the Balkans for about a century at that time and controlled most of the region. Belgrade is way at the opposite end from where they first landed, which was at Galipoli. (talk) —Preceding undated comment added 09:24, 25 March 2013 (UTC)
Changed to Kingdom of Hungary. Serendipodous 10:51, 25 March 2013 (UTC)

164BC Discrepancy[edit]

The 2nd list item under Apparitions identifies the date as 12 November 164 BCE, while the caption for the image of the tablet in the first subsection (Prior to 1066) states "Observation of Halley's Comet, recorded in cuneiform on a clay tablet between 22 and 28 September 164 BCE, Babylon, Iraq. British Museum."

Which was it; September or November? — Preceding unsigned comment added by Wikierroneous (talkcontribs) 14:31, 24 July 2013 (UTC)

November 12 was the date of perihelion. It was visible before that date. Saros136 (talk) 08:16, 16 May 2014 (UTC)
Babylonian tablet recording Halley's comet.jpg
Cuneiform tablet recording observation of Halley's Comet.JPG

A second contradiction:

Left pic: A Babylonian tablet recording Halley's comet during an appearance in 164 BC. At the British Museum in London „(you can see 41462 in the text)

Right pic: Observation of Haley's Comet, recorded in Cuneiform on a clay tablet between 22-28 September 164 BCE, Babylon, Iraq. British Museum, London. BM 41462

--Palitzsch250 (talk) 19:04, 4 April 2014 (UTC)

Era Names[edit]

I remember reading this page some years ago, and have noticed that the era names were changed from BC/AD to BCE/CE over that time. Looking over the revision history, it seems that Materialscientist switched them over on Oct. 23, 2011, and has been reverting attempts to change them back. However, the original change appears to me to be in contradiction to WP:BCE, which states "Do not change the established era style in an article . . . A personal or categorical preference for one era style over the other is not justification for making a change;" and "Seek consensus on the talk page before making the change." Since this has been a cause of repeated edit warring over the past two years, pending discussion here, I'd like to change them back to the original style which was present for the previous nine years. Korossyl (talk) 17:01, 3 December 2013 (UTC)

Agreed. Please do. Lachrie (talk) 05:10, 8 December 2013 (UTC)

Good catch! However, for precision, it looks like the initial wholesale change was made by User:Eastaer. Materialscientist then caught some stragglers, leaving an edit summary that said something about "consistency of eras". Materialscientist does not seem to have edited the article for almost two months prior to that, so it's possible (s)he didn't notice that the longstanding usage here was AD/BC. --Trovatore (talk) 04:13, 10 December 2013 (UTC)
Ah, right back at you. I missed that, thanks! And apologies, then, to Materialscientist for the misidentification. Korossyl (talk) 12:52, 10 December 2013 (UTC)

Spelling and Pronounciation[edit]

I disagree strongly with the implication that Halley spelled his name 5 different ways. This is extremely unlikely and needs more credible citations than the one is given here. I fail to see how the MISspellings of his name are at all relevant. Given the state of communication during his lifetime, it would be unlikely to be unable to find misspellings of a famous name - since all the spellings ARE correctly someone's surname. If some official scientific body misspelled his name (intentionally or in official documents) then that would be notable (since scientist's names are given careful attention in attributions), but not really relevant here. Given that the claims about spelling are simply wrong, so are the claims about the variety of pronunciations. WHY is this section HERE AT ALL?? I have always pronounced it "Hail E" but if Edmund Halley pronounced his name "Haw lee" or "Hal E" then that is clearly important to note. Is there some disagreement by historians about these facts? This section needs a re-write. Alternate spellings are either pervasive and need mention, or not; but plainly he knew how to spell his own name correctly. Same with pronunciation. If I am correct, then this entire section should be removed and replaced by a simple statement of fact about how he pronounced his own name.Abitslow (talk) 18:32, 7 December 2013 (UTC)

Edmund Halley presumably spelled his name "Halley". We don't have tape recordings from that era; we have no idea how he pronounced it. All we have are written records, and they conflict. Misspellings of names are the only clues we have to contemporary pronunciations, unless Halley was the subject of a rhyming couplet somewhere. Serendipodous 00:02, 8 December 2013 (UTC)
The modern pronunciation is usually the same as the "Halle" in Halle Berry, to rhyme with "valley", as evidenced from a Royal Astronomical Society song from 1910. The eighteenth-century pronunciation was probably "Hawley", but the longer vowel has been shortened in a lot of English words since the eighteenth century. The language itself has changed and I can't see a strong reason to affect an archaic pronunciation in this instance when we usually don't with other proper nouns, though it's a matter of personal choice. Lachrie (talk) 05:30, 8 December 2013 (UTC)

Non-gravitational effects[edit]

The sentence I replaced , These orbital changes can cause deviations in its perihelion of four days, seems supported by the source if we take its statement about 1P/Halley without context. As if to say four days is the maximum, and presumably the average is less. A book by the same author, Comets, makes it clear that four days is about the average difference and that it comes late. I'm going to put more about the NG forces too. Saros136 (talk) 07:31, 18 May 2014 (UTC)