2262: Parker Solar Probe - Revision history

FaviFake: removed Category:Large drawings using HotCat - Not large, just narrower than usual

2025-01-29T18:27:50Z

removed Category:Large drawings using HotCat - Not large, just narrower than usual

172.71.215.216 at 03:22, 13 December 2024

2024-12-13T03:22:37Z

172.69.194.207: /* Explanation */ Capitalise

2024-03-02T15:36:32Z

‎Explanation: Capitalise

Nitpicking: /* Explanation */ one sentence copy-edit

2024-03-02T15:09:01Z

‎Explanation: one sentence copy-edit

Davidy22: Reverted edits by The author of xkcd (talk) to last revision by Theusaf

2022-05-16T23:31:20Z

Reverted edits by The author of xkcd (talk) to last revision by Theusaf

Show changes

The author of xkcd at 22:50, 16 May 2022

2022-05-16T22:50:23Z

Show changes

Theusaf: Reverted edits by 👖🔥 (talk) to last revision by Jacky720

2022-05-11T18:45:28Z

Reverted edits by 👖🔥 (talk) to last revision by Jacky720

Show changes

👖🔥 at 17:40, 11 May 2022

2022-05-11T17:40:46Z

Show changes

Jacky720: rv

2022-05-04T22:00:43Z

Show changes

Ex Kay Cee Dee at 22:00, 4 May 2022

2022-05-04T22:00:34Z

Show changes

← Older revision		Revision as of 18:27, 29 January 2025
Line 81:		Line 81:
	[[Category:Astronomy]]		[[Category:Astronomy]]
	[[Category:Space probes]]		[[Category:Space probes]]
−	~~[[Category:Large drawings]]~~

← Older revision		Revision as of 03:22, 13 December 2024
Line 81:		Line 81:
	[[Category:Astronomy]]		[[Category:Astronomy]]
	[[Category:Space probes]]		[[Category:Space probes]]
		+	[[Category:Large drawings]]

@@ Line 16: / Line 16: @@
 [[File:Animation of Parker Solar Probe trajectory.gif|thumb|right|Animation of Parker Solar Probe's trajectory from August 7, 2018 to August 29, 2025 <br />{{Color|magenta|Parker Solar Probe}} • {{Color|RoyalBlue|Earth}} • {{Color|Cyan|Venus}} • {{Color|Lime|Mercury}} • {{Color|#dbd81d|Sun}}]]
-[[Cueball]] and [[Megan]] are standing on Earth. The way this diagram is drawn, they look like they could fall off Earth toward the Sun -- hence the comment "Careful!" -- though the joke is that in real life they would fall toward the center of the Earth, not toward the Sun. Also the surprise for many people is that it is much harder to reach the sun than Pluto, because we travel so fast here on Earth. To reach the sun this speed has to be reduced, which is a larger speed difference than the one needed to escape the Sun's gravity well. If you could "fall" off Earth, you would just keep the approximately same distance to the Sun, but drifting slowly away from Earth.
+[[Cueball]] and [[Megan]] are standing on Earth. The way this diagram is drawn, they look like they could fall off Earth toward the Sun -- hence the comment "Careful!" -- though the joke is that in real life they would fall toward the center of the Earth, not toward the Sun. Also the surprise for many people is that it is much harder to reach the Sun than Pluto, because we travel so fast here on Earth. To reach the Sun this speed has to be reduced, which is a larger speed difference than the one needed to escape the Sun's gravity well. If you could "fall" off Earth, you would just keep the approximately same distance to the Sun, but drifting slowly away from Earth.
 The title text says the probe will get within 9 or 10 Sun-''diameters'' of the Sun's ''surface''. This is a bit of a mistake: it will actually get {{w|Parker Solar Probe|within that many Sun-''radii''}} (only 4½ or 5 Sun-diameters) of the ''center'' of the Sun, which corresponds to 4 or 4½ Sun-diameters above its surface. All the same, the title text makes the point that "Sun-diameters" (or "Sun-radii", for that matter) sounds like an astronomical distance, until you use the same scale for other distances. The distance from the Earth to the Sun is approximately 106 Sun-diameters; by that scale, 4 Sun-diameters is indeed "practically all the way down". Below is a table showing these and other distances using more common units of measurement.

@@ Line 16: / Line 16: @@
 [[File:Animation of Parker Solar Probe trajectory.gif|thumb|right|Animation of Parker Solar Probe's trajectory from August 7, 2018 to August 29, 2025 <br />{{Color|magenta|Parker Solar Probe}} • {{Color|RoyalBlue|Earth}} • {{Color|Cyan|Venus}} • {{Color|Lime|Mercury}} • {{Color|#dbd81d|Sun}}]]
-[[Cueball]] and [[Megan]] are standing on Earth. The way this diagram is drawn, they look like they could fall off Earth toward the Sun -- hence the comment "Careful!" -- though the joke is that in real life they would fall toward the center of the Earth, not toward the Sun. Also the surprise for many people is that it is much harder to reach the sun than Pluto. Because we already travel so fast here on Earth, and to reach the sun this speed has to be reduced, which is a larger speed difference than the one needed to escape the Sun's gravity well. If you could "fall" off Earth, you would just keep the approximately same distance to the Sun, but drifting slowly away from Earth.
+[[Cueball]] and [[Megan]] are standing on Earth. The way this diagram is drawn, they look like they could fall off Earth toward the Sun -- hence the comment "Careful!" -- though the joke is that in real life they would fall toward the center of the Earth, not toward the Sun. Also the surprise for many people is that it is much harder to reach the sun than Pluto, because we travel so fast here on Earth. To reach the sun this speed has to be reduced, which is a larger speed difference than the one needed to escape the Sun's gravity well. If you could "fall" off Earth, you would just keep the approximately same distance to the Sun, but drifting slowly away from Earth.
 The title text says the probe will get within 9 or 10 Sun-''diameters'' of the Sun's ''surface''. This is a bit of a mistake: it will actually get {{w|Parker Solar Probe|within that many Sun-''radii''}} (only 4½ or 5 Sun-diameters) of the ''center'' of the Sun, which corresponds to 4 or 4½ Sun-diameters above its surface. All the same, the title text makes the point that "Sun-diameters" (or "Sun-radii", for that matter) sounds like an astronomical distance, until you use the same scale for other distances. The distance from the Earth to the Sun is approximately 106 Sun-diameters; by that scale, 4 Sun-diameters is indeed "practically all the way down". Below is a table showing these and other distances using more common units of measurement.