Talk:3049: Incoming Asteroid - Revision history

172.70.160.182 at 03:17, 14 February 2025

2025-02-14T03:17:35Z

172.71.241.145 at 02:03, 14 February 2025

2025-02-14T02:03:43Z

172.69.23.9: closest planet

2025-02-13T23:13:48Z

closest planet

172.69.43.171: Rationalise/sign (no need for header)

2025-02-13T16:03:05Z

Rationalise/sign (no need for header)

172.70.126.169: /* Skipped a power */

2025-02-13T15:22:55Z

‎Skipped a power

172.68.243.66: /* missing one power in scale */

2025-02-13T12:09:36Z

‎missing one power in scale

162.158.134.90: Missing one power

2025-02-13T11:04:58Z

Missing one power

172.71.241.37 at 00:09, 13 February 2025

2025-02-13T00:09:27Z

StapleFreeBatteries at 23:27, 12 February 2025

2025-02-12T23:27:13Z

StapleFreeBatteries at 23:26, 12 February 2025

2025-02-12T23:26:39Z

← Older revision		Revision as of 03:17, 14 February 2025
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	Surely the other planet closest to Earth, on average, is Mercury? [[Special:Contributions/172.69.23.9\|172.69.23.9]] 23:13, 13 February 2025 (UTC)		Surely the other planet closest to Earth, on average, is Mercury? [[Special:Contributions/172.69.23.9\|172.69.23.9]] 23:13, 13 February 2025 (UTC)
	:Without crunching the numbers myself, it may depend upon which 'average' you mean. There's aparently fairly definite factual statements, out there, like "Venus'[s] average distance to Earth as around 25.7 million miles (41.4 million km), compared with 57 million miles (91.7 million km) for Mercury and 48.6 million miles (78.3 million km) for Mars", but also "Mercury is the nearest planet to Earth — and to every other planet in the solar system". I'm going to have to actually look at both claims, work out what's going on there (who is being wrong, or why they're right but for different reasons). [[Special:Contributions/172.71.241.145\|172.71.241.145]] 02:03, 14 February 2025 (UTC)		:Without crunching the numbers myself, it may depend upon which 'average' you mean. There's aparently fairly definite factual statements, out there, like "Venus'[s] average distance to Earth as around 25.7 million miles (41.4 million km), compared with 57 million miles (91.7 million km) for Mercury and 48.6 million miles (78.3 million km) for Mars", but also "Mercury is the nearest planet to Earth — and to every other planet in the solar system". I'm going to have to actually look at both claims, work out what's going on there (who is being wrong, or why they're right but for different reasons). [[Special:Contributions/172.71.241.145\|172.71.241.145]] 02:03, 14 February 2025 (UTC)
		+	:...well, seems obvious that the first one didn't mean "average (i.e. mean)", but probably "minimum". My own actual quick-and-dirty calculation (median Earth-Sun and median Planet-Sun distances, arrayed uniformly around a conjunction-to-conjunction circle for positional differences smeared free of any particular perihelion/aphelion bias, then arithmetically averaged, also without regard for any Keplerian sweeping-speeds - which should satisfactorarily smooth out the actual details ''unless'' there's a particular resonance aligning eliptic axes consistently) suggests Earth-Mercury is averaged at 1.05ish AU ('median'-based ranges from 0.55 to 1.45), Earth-Venus is 1.14ish (ranging 0.275 to 1.725), Earth-Mars 1.69ish (0.525 to 2.525), Jupiter: 5.25, Saturn: 9.62, Uranus: 19.21, Neptune: 30.21, in case I've made any stupid errors (not just approximations).
		+	:But it already had occured to me that Mercury would be the "average closest planet" to ''every other planet'' (given no particularly extreme ellipses, and orbital resonances to keep them perpetually aligned). My mental exercise was to take a basic concentrjc map of orbits, use dividers to measure any given starting planet's distance from the Sun, and then sweep a circle of that radius around the planet. Where that line crosses every other inferior orbit (and any superior orbit no more than twice the size of the starting planet), it cuts those orbits into a "nearer than the Sun" arc and a "further than the Sun" arc (for r*[n>2] orbits, it's 'all' further than the Sun), with the ratio of nearer:further lengths generally being less arc vs. more arc, tending towards 1:1 only for the smallest orbits (r=lim->0). So the larger the other planet's orbit, the larger this average would be, above the chosen planet's own solar-distance, and Mercury (in the absence of anything closer to the Sun) would end up with the least additional amount above the constant distance to the Sun itself.
		+	:Which I found interesting to work out, so maybe will be interesting for others, but didn't entirely trust myself until I hacked up the apparent emperical evidence, too. [[Special:Contributions/172.70.160.182\|172.70.160.182]] 03:17, 14 February 2025 (UTC)

← Older revision		Revision as of 02:03, 14 February 2025
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	Surely the other planet closest to Earth, on average, is Mercury? [[Special:Contributions/172.69.23.9\|172.69.23.9]] 23:13, 13 February 2025 (UTC)		Surely the other planet closest to Earth, on average, is Mercury? [[Special:Contributions/172.69.23.9\|172.69.23.9]] 23:13, 13 February 2025 (UTC)
		+	:Without crunching the numbers myself, it may depend upon which 'average' you mean. There's aparently fairly definite factual statements, out there, like "Venus'[s] average distance to Earth as around 25.7 million miles (41.4 million km), compared with 57 million miles (91.7 million km) for Mercury and 48.6 million miles (78.3 million km) for Mars", but also "Mercury is the nearest planet to Earth — and to every other planet in the solar system". I'm going to have to actually look at both claims, work out what's going on there (who is being wrong, or why they're right but for different reasons). [[Special:Contributions/172.71.241.145\|172.71.241.145]] 02:03, 14 February 2025 (UTC)

← Older revision		Revision as of 23:13, 13 February 2025
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	Seemes there is little change between a 10cm and 1m astroid. The scale skips the 100cm step. It should be : 1cm, 10, ''100'', 1m [[Special:Contributions/172.68.243.66\|172.68.243.66]] 12:09, 13 February 2025 (UTC)		Seemes there is little change between a 10cm and 1m astroid. The scale skips the 100cm step. It should be : 1cm, 10, ''100'', 1m [[Special:Contributions/172.68.243.66\|172.68.243.66]] 12:09, 13 February 2025 (UTC)
	:That is because 100 cm = 1 m. No step is skipped {{unsigned ip\|172.70.126.169\|15:22, 13 February 2025}}		:That is because 100 cm = 1 m. No step is skipped {{unsigned ip\|172.70.126.169\|15:22, 13 February 2025}}
		+
		+	Surely the other planet closest to Earth, on average, is Mercury? [[Special:Contributions/172.69.23.9\|172.69.23.9]] 23:13, 13 February 2025 (UTC)

@@ Line 26: / Line 26: @@
 :::Annoyingly, the standard phrase tends to be "the bike was in collision with a car", with the implication of perhaps equal fault, if not switched round entirely. Yes, a cyclist ''can'' be the one who "hits the blameless car", or pedestrian steps into the side of the passing cyclist (or car, bus, lorry, etc, potentially), but it's more often the other way round, and the balance of sympathies (regardless of who most erred, to result in the incident) should probably be considered by who is most damaged (trickier in foot vs bike incident, one is initially struck by a lump of metal with spinning bits and various hard protusions, the other may then be struck by(/strikes) the ground). [[Special:Contributions/172.71.241.37|172.71.241.37]] 00:09, 13 February 2025 (UTC)
-===Skipped a power===
+Seemes there is little change between a 10cm and 1m astroid. The scale skips the 100cm step. It should be : 1cm, 10, ''100'', 1m [[Special:Contributions/172.68.243.66|172.68.243.66]] 12:09, 13 February 2025 (UTC)
-Seemes there is little change between a 10cm and 1m astroid. The scale skips the 100cm step. It should be :
+:That is because 100 cm = 1 m.  No step is skipped {{unsigned ip|172.70.126.169|15:22, 13 February 2025}}

← Older revision		Revision as of 15:22, 13 February 2025
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	Seemes there is little change between a 10cm and 1m astroid. The scale skips the 100cm step. It should be :		Seemes there is little change between a 10cm and 1m astroid. The scale skips the 100cm step. It should be :
	1cm, 10, ''100'', 1m [[Special:Contributions/172.68.243.66\|172.68.243.66]] 12:09, 13 February 2025 (UTC)		1cm, 10, ''100'', 1m [[Special:Contributions/172.68.243.66\|172.68.243.66]] 12:09, 13 February 2025 (UTC)
		+
		+	That is because 100 cm = 1 m. No step is skipped

← Older revision		Revision as of 11:04, 13 February 2025
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	:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case. --[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)		:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case. --[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)
	:::Annoyingly, the standard phrase tends to be "the bike was in collision with a car", with the implication of perhaps equal fault, if not switched round entirely. Yes, a cyclist ''can'' be the one who "hits the blameless car", or pedestrian steps into the side of the passing cyclist (or car, bus, lorry, etc, potentially), but it's more often the other way round, and the balance of sympathies (regardless of who most erred, to result in the incident) should probably be considered by who is most damaged (trickier in foot vs bike incident, one is initially struck by a lump of metal with spinning bits and various hard protusions, the other may then be struck by(/strikes) the ground). [[Special:Contributions/172.71.241.37\|172.71.241.37]] 00:09, 13 February 2025 (UTC)		:::Annoyingly, the standard phrase tends to be "the bike was in collision with a car", with the implication of perhaps equal fault, if not switched round entirely. Yes, a cyclist ''can'' be the one who "hits the blameless car", or pedestrian steps into the side of the passing cyclist (or car, bus, lorry, etc, potentially), but it's more often the other way round, and the balance of sympathies (regardless of who most erred, to result in the incident) should probably be considered by who is most damaged (trickier in foot vs bike incident, one is initially struck by a lump of metal with spinning bits and various hard protusions, the other may then be struck by(/strikes) the ground). [[Special:Contributions/172.71.241.37\|172.71.241.37]] 00:09, 13 February 2025 (UTC)
		+
		+	===missing===
		+	1cm, 10, ''100'', 1m

← Older revision		Revision as of 00:09, 13 February 2025
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	:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case. --[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)		:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case. --[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)
		+	:::Annoyingly, the standard phrase tends to be "the bike was in collision with a car", with the implication of perhaps equal fault, if not switched round entirely. Yes, a cyclist ''can'' be the one who "hits the blameless car", or pedestrian steps into the side of the passing cyclist (or car, bus, lorry, etc, potentially), but it's more often the other way round, and the balance of sympathies (regardless of who most erred, to result in the incident) should probably be considered by who is most damaged (trickier in foot vs bike incident, one is initially struck by a lump of metal with spinning bits and various hard protusions, the other may then be struck by(/strikes) the ground). [[Special:Contributions/172.71.241.37\|172.71.241.37]] 00:09, 13 February 2025 (UTC)

← Older revision		Revision as of 23:27, 12 February 2025
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	:I would say if a smaller asteroid hit Earth then yes it collides with Earth. If two similar planet sized object hit each other, then I would say they collided with each other, and if Earth hit Jupiter I would say Earth collided with Jupiter. This may not be physically correct, but it is how language and meaning works. So I would say it was correctly removed. --[[User:Kynde\|Kynde]] ([[User talk:Kynde\|talk]]) 11:44, 12 February 2025 (UTC)		:I would say if a smaller asteroid hit Earth then yes it collides with Earth. If two similar planet sized object hit each other, then I would say they collided with each other, and if Earth hit Jupiter I would say Earth collided with Jupiter. This may not be physically correct, but it is how language and meaning works. So I would say it was correctly removed. --[[User:Kynde\|Kynde]] ([[User talk:Kynde\|talk]]) 11:44, 12 February 2025 (UTC)

−	:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case.	+	:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case. --[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)
−
−	[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)

← Older revision		Revision as of 23:26, 12 February 2025
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	:I would say if a smaller asteroid hit Earth then yes it collides with Earth. If two similar planet sized object hit each other, then I would say they collided with each other, and if Earth hit Jupiter I would say Earth collided with Jupiter. This may not be physically correct, but it is how language and meaning works. So I would say it was correctly removed. --[[User:Kynde\|Kynde]] ([[User talk:Kynde\|talk]]) 11:44, 12 February 2025 (UTC)		:I would say if a smaller asteroid hit Earth then yes it collides with Earth. If two similar planet sized object hit each other, then I would say they collided with each other, and if Earth hit Jupiter I would say Earth collided with Jupiter. This may not be physically correct, but it is how language and meaning works. So I would say it was correctly removed. --[[User:Kynde\|Kynde]] ([[User talk:Kynde\|talk]]) 11:44, 12 February 2025 (UTC)

−	:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). (Bigger object) collided with (smaller object)	+	:: Yet the logic is reversed when talking about vehicles on Earth. You would say "the car collided with the bicycle" and "the train collided with the car" (or the car got hit ''by'' the train). "{Bigger object} collided with {smaller object}" in this case.
		+
		+	[[User:StapleFreeBatteries\|StapleFreeBatteries]] ([[User talk:StapleFreeBatteries\|talk]]) 23:26, 12 February 2025 (UTC)