Talk:473: Still Raw

The explanation says: "... Pluto has been the ninth planet in our solar system until 2006 ...".

It should says 'the tenth' isn'it? SioD (talk) 14:52, 30 August 2013 (UTC)

Pluto was discovered in 1930, and has been since the ninth body to be discovered and classified as a "planet". The sentence is a temporal rather than spacial reference, if that clears up any confusion. Thokling (talk) 12:04, 24 September 2013 (UTC)

Actually, no. Using the temporal definition, Pluto would be number 13. It was discovered after Ceres, Pallas, Juno and Vesta, which were discovered, named and classified, but then quickly demoted, all about 120 years before Pluto. This was due to the fact that telescopes of the day were strong enough to see quite a bit of the asteroid belt in a relatively short time, unlike with the "previously mythical" Kuiper belt.

Also, if any thing, the spacial discrepancy should be between eighth and ninth, as Pluto's orbit is squeezed enough to be inside that of Neptune, but long enough to extend outside it. Charon, Pluto's "moon" may cause additional worry, but is usually ignored.

Anonymous 01:11, 4 December 2013 (UTC)

The airplane/treadmill question is actually hard to define properly. In real case scenario, the plane would of course take off, but you can keep it in place if you assume really fast treadmill (much faster that the plane), friction in airplane wheels and that those wheels won't break off, catch fire or otherwise get destroyed under the stress much higher they are developed for. Oh, wait, actually the airplane WONT take off if the wheels break. :-) -- Hkmaly (talk) 12:01, 5 December 2013 (UTC)