1752: Interplanetary Experience - Revision history

172.68.186.140: /* Explanation of celestial bodies */

2025-03-28T20:48:26Z

‎Explanation of celestial bodies

Avrayter: /* Explanation of celestial bodies */

2025-03-28T13:41:49Z

‎Explanation of celestial bodies

FaviFake: Fixed broken link (was a redirect)

2023-05-22T10:32:42Z

Fixed broken link (was a redirect)

PaintspotInfez: Not sure why this comic isn't showing up in the category (and, thus, making the number of comics inaccurate), but I think a null edit like this would fix it

2022-05-04T23:02:30Z

Not sure why this comic isn't showing up in the category (and, thus, making the number of comics inaccurate), but I think a null edit like this would fix it

Jacky720: rv

2022-05-04T20:55:32Z

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Ex Kay Cee Dee at 20:47, 4 May 2022

2022-05-04T20:47:13Z

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Davidy22: Reverted edits by X. K. C. D. (talk) to last revision by Nitpicking

2022-05-04T01:43:03Z

Reverted edits by X. K. C. D. (talk) to last revision by Nitpicking

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X. K. C. D. at 01:31, 4 May 2022

2022-05-04T01:31:46Z

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Nitpicking: /* Explanation of celestial bodies */ Metallic hydrogen has been made several times (and in any case is totally tangential to Randall's joke).

2022-02-22T05:23:24Z

‎Explanation of celestial bodies: Metallic hydrogen has been made several times (and in any case is totally tangential to Randall's joke).

Yfmcpxpj: Fix "what if?" links.

2020-10-01T02:39:22Z

Fix "what if?" links.

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 * {{w|Mercury (planet)|Mercury}} (day): A lava flow at a volcano at noon
-Mercury's surface never quite reaches {{w|lava}} temperatures (if it did, it would be molten), but it gets close. At noon, Mercury's equator reaches 420°C (800°F, 700 K). Lava is a liquid usually at temperatures from 700 to 1,200 °C (1,300 to 2,200 °F, 970 K to 1470 K) but depending on what type of rock it's formed from, [http://hvo.wr.usgs.gov/volcanowatch/archive/2003/03_04_17.html lava can erupt] at temperatures as low as 500°C-600°C (930°F-1100°F, 770–870 K). Standing on a {{w|volcano}} on a partially solidified lava flow (which, it goes without saying, is incredibly dangerous{{citation needed}}.) would expose you to similar temperatures.
+Mercury's surface never quite reaches {{w|lava}} temperatures (if it did, it would be molten), but it gets close. At noon, Mercury's equator reaches 420°C (800°F, 700 K). Lava is a liquid usually at temperatures from 700 to 1,200 °C (1,300 to 2,200 °F, 970 K to 1470 K) but depending on what type of rock it's formed from, [http://hvo.wr.usgs.gov/volcanowatch/archive/2003/03_04_17.html lava can erupt] at temperatures as low as 500°C-600°C (930°F-1100°F, 770–870 K). Standing on a {{w|volcano}} on a partially solidified lava flow (which, it goes without saying, is incredibly dangerous){{Citation needed}} would expose you to similar temperatures.
 Near the poles, Mercury's surface temperature is always very low as the axial tilt is almost zero, meaning that the poles do not get much direct sunlight and their temperature is constantly below −93 °C (−136 °F, 180 K).

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 * {{w|Mercury (planet)|Mercury}} (day): A lava flow at a volcano at noon
-Mercury's surface never quite reaches {{w|lava}} temperatures (if it did, it would be molten), but it gets close. At noon, Mercury's equator reaches 420°C (800°F, 700 K). Lava is a liquid usually at temperatures from 700 to 1,200 °C (1,300 to 2,200 °F, 970 K to 1470 K) but depending on what type of rock it's formed from, [http://hvo.wr.usgs.gov/volcanowatch/archive/2003/03_04_17.html lava can erupt] at temperatures as low as 500°C-600°C (930°F-1100°F, 770–870 K). Standing on a {{w|volcano}} on a partially solidified lava flow (which, it goes without saying, is incredibly dangerous) would expose you to similar temperatures.
+Mercury's surface never quite reaches {{w|lava}} temperatures (if it did, it would be molten), but it gets close. At noon, Mercury's equator reaches 420°C (800°F, 700 K). Lava is a liquid usually at temperatures from 700 to 1,200 °C (1,300 to 2,200 °F, 970 K to 1470 K) but depending on what type of rock it's formed from, [http://hvo.wr.usgs.gov/volcanowatch/archive/2003/03_04_17.html lava can erupt] at temperatures as low as 500°C-600°C (930°F-1100°F, 770–870 K). Standing on a {{w|volcano}} on a partially solidified lava flow (which, it goes without saying, is incredibly dangerous{{citation needed}}.) would expose you to similar temperatures.
 Near the poles, Mercury's surface temperature is always very low as the axial tilt is almost zero, meaning that the poles do not get much direct sunlight and their temperature is constantly below −93 °C (−136 °F, 180 K).

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 The two groupings explains why there are only seven places mentioned for ten celestial bodies. The reason that the Moon is mentioned is of course that it is the closest companion to Earth and that we have actually visited it. That the only other moon mentioned is likely because it is the only really cold celestial body that actually has an atmosphere as well as a surface humans could stand on. But there are many other large moons that would be interesting to visit, like the {{w|Galilean moons}} especially {{w|Europa (moon)|Europa}}. But that could probably be compared to being on Pluto, except the sun is a bit larger. That Pluto is included as the only dwarf planet is probably because it was still a planet when Randall was a kid (see [[473: Still Raw]]) and is the most recent (new) celestial body visited by a space probe at the time of release of this comic. This was celebrated by Randall in [[1551: Pluto]].
-The title text is just a continuation of the last entry about falling down through the atmosphere of a gas giant, and it is also explained in the table below. This was also explored in [[what if|What If?]] {{what if|138|Jupiter Submarine}}.
+The title text is just a continuation of the last entry about falling down through the atmosphere of a gas giant, and it is also explained in the table below. This was also explored in the ''[[what if? (blog)|what if?]]'' article ''{{what if|138|Jupiter Submarine}}''.
 ==Explanation of celestial bodies==
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 * {{w|Moon}} (day): Mt. Everest at noon under a tanning lamp
-As explained above, Mount Everest is as good an emulation of the Moon surface at night as you can get on Earth. During the Moon's day, its surface gets about as much solar radiation as Earth at noon, because both bodies' distance from the Sun is almost the same. The Earth's atmosphere, however, stops most of the Sun's {{w|ultraviolet radiation}}. A {{w|tanning lamp}} is a device emitting mostly ultraviolet radiation for the purpose of artificial {{w|tanning}}; here it is used to augment the filtered Sun's radiation in an attempt to emulate the Moon's daytime conditions better. Since the Moon does not have any atmosphere it is hard to discuss the temperature experienced on the Moon, but still the [http://planetfacts.org/temperature-on-the-moon/ surface of the Moon reaches temperatures] above water's boiling point (100°C or 212 °F) during the day with an average daytime temperature of the Moon at 107°C (224.6 °F). This effect will not be very well emulated on top of Mount Everest or even in the hottest (non-volcanic) place on Earth's surface that reaches 53.9°C (129°F) — see the [[what if|what if?]] ''{{what if|152|Flood Death Valley}}''.
+As explained above, Mount Everest is as good an emulation of the Moon surface at night as you can get on Earth. During the Moon's day, its surface gets about as much solar radiation as Earth at noon, because both bodies' distance from the Sun is almost the same. The Earth's atmosphere, however, stops most of the Sun's {{w|ultraviolet radiation}}. A {{w|tanning lamp}} is a device emitting mostly ultraviolet radiation for the purpose of artificial {{w|tanning}}; here it is used to augment the filtered Sun's radiation in an attempt to emulate the Moon's daytime conditions better. Since the Moon does not have any atmosphere it is hard to discuss the temperature experienced on the Moon, but still the [http://planetfacts.org/temperature-on-the-moon/ surface of the Moon reaches temperatures] above water's boiling point (100°C or 212 °F) during the day with an average daytime temperature of the Moon at 107°C (224.6 °F). This effect will not be very well emulated on top of Mount Everest or even in the hottest (non-volcanic) place on Earth's surface that reaches 53.9°C (129°F) — see the ''[[what if? (blog)|what if?]]'' article ''{{what if|152|Flood Death Valley}}''.
 * {{w|Mercury (planet)|Mercury}} (day): A lava flow at a volcano at noon
@@ Line 48: / Line 48: @@
 Note that it is Jupiter to Neptune thus including also {{w|Saturn}} and {{w|Uranus}}. They are under one called {{w|gas giants}} for a reason. All the planets are very cold and have stormy weather (Uranus is the least active, and Neptune is the most active) and extreme temperature and pressure gradients.  On the edge of the atmosphere, conditions aren't much different from space, but as you fall in, the temperature and pressure rapidly increase past the freezing point (allowing clouds of ice and water). This environment is simulated by jumping out of a {{w|high-altitude balloon}} (low pressure and cold) and falling down into an {{w|Antarctic Ocean}} winter storm, a very cold and violently windy place. The storms on the gas planets can be much more violent than any storm on Earth. On Neptune the storms can reach 2,100 km/h (580 m/s, 1,300 mph), whereas the {{w|Great Red Spot}} of Jupiter only reaches 430 km/h (120 m/s, 270 mph). The {{w|Wind_speed#Highest_speed|highest wind speed}} on Earth (outside {{w|tornadoes}}) has been measured at 408 km/h (113 m/s, 253 mph), and that was only the gusts.
-The title text continues the last entry in the main comic, so this explanation is also a direct continuation of the above entry. The extreme temperature and pressure gradients mentioned do not stop when the atmospheric temperature and pressure increase beyond water's freezing point.  Soon the temperature reaches past the boiling point, and on up to thousands of degrees and unimaginably high pressures, increasing further until reaching the central core. The cores of Neptune and Uranus most likely consist of rock (superheated silicates, iron and nickel) or in the case of Saturn and Jupiter of liquid {{w|metallic hydrogen}}, where the extreme high-pressure and temperature causes {{w|hydrogen}} to behave like a metal. The suggested simulation of this environment is to fall into a super hot bath tub that falls into the burning engine room of a ship that is sinking, and thus is about be crushed by the water pressure of the deep ocean.  This is the closest representation of the pressure and temperature conditions of the inner parts of the gas giants that can be imagined on Earth, but of course the cores of these planets are far, far more inhospitable than the scenarios mentioned above. Descending into Jupiter was also explored in the [[what if|what if?]] {{what if|138|Jupiter Submarine}}.
+The title text continues the last entry in the main comic, so this explanation is also a direct continuation of the above entry. The extreme temperature and pressure gradients mentioned do not stop when the atmospheric temperature and pressure increase beyond water's freezing point.  Soon the temperature reaches past the boiling point, and on up to thousands of degrees and unimaginably high pressures, increasing further until reaching the central core. The cores of Neptune and Uranus most likely consist of rock (superheated silicates, iron and nickel) or in the case of Saturn and Jupiter of liquid {{w|metallic hydrogen}}, where the extreme high-pressure and temperature causes {{w|hydrogen}} to behave like a metal. The suggested simulation of this environment is to fall into a super hot bath tub that falls into the burning engine room of a ship that is sinking, and thus is about be crushed by the water pressure of the deep ocean.  This is the closest representation of the pressure and temperature conditions of the inner parts of the gas giants that can be imagined on Earth, but of course the cores of these planets are far, far more inhospitable than the scenarios mentioned above. Descending into Jupiter was also explored in the ''[[what if? (blog)|what if?]]'' article ''{{what if|138|Jupiter Submarine}}''.
 ==Transcript==

@@ Line 8: / Line 8: @@
 ==Explanation==
-This comic lists ten {{w|celestial bodies}}: most other {{w|planets}}, the {{w|dwarf planet}} {{w|Pluto}} as well as two {{w|moons}}, the Earth's {{w|Moon}} and {{w|Titan (moon)|Titan}}, the largest moon of {{w|Saturn}}. It then asks what places on Earth people could go to for a real '''Interplanetary Experience''', as if they were explorers on these planets. It turns out that none of these ten other worlds are very nice to visit...
+This comic lists ten {{w|celestial bodies}}: most other {{w|planets}}, the {{w|dwarf planet}} {{w|Pluto}}, as well as two {{w|moons}}, the Earth's {{w|Moon}} and {{w|Titan (moon)|Titan}} (the largest moon of {{w|Saturn}}). It then asks what places on Earth people could go to for a real '''Interplanetary Experience''', as if they were explorers on these planets. It turns out that none of these ten other worlds are very nice to visit...
 This is a parody on organizations that in preparation for future planetary exploration organize half-realistic experiments in human behavior on other planets, trying to emulate or mock-up - often on low budget - the conditions in which future explorers are to live and work. For this purpose, they build mock-up bases, habitats etc. in places that ''look like'' other planets or have the environmental conditions ''somewhat'' similar to other celestial bodies' surfaces. They seek out desolate places like deserts or polar regions for this purpose.

@@ Line 48: / Line 48: @@
 Note that it is Jupiter to Neptune thus including also {{w|Saturn}} and {{w|Uranus}}. They are under one called {{w|gas giants}} for a reason. All the planets are very cold and have stormy weather (Uranus is the least active, and Neptune is the most active) and extreme temperature and pressure gradients.  On the edge of the atmosphere, conditions aren't much different from space, but as you fall in, the temperature and pressure rapidly increase past the freezing point (allowing clouds of ice and water). This environment is simulated by jumping out of a {{w|high-altitude balloon}} (low pressure and cold) and falling down into an {{w|Antarctic Ocean}} winter storm, a very cold and violently windy place. The storms on the gas planets can be much more violent than any storm on Earth. On Neptune the storms can reach 2,100 km/h (580 m/s, 1,300 mph), whereas the {{w|Great Red Spot}} of Jupiter only reaches 430 km/h (120 m/s, 270 mph). The {{w|Wind_speed#Highest_speed|highest wind speed}} on Earth (outside {{w|tornadoes}}) has been measured at 408 km/h (113 m/s, 253 mph), and that was only the gusts.
-The title text continues the last entry in the main comic, so this explanation is also a direct continuation of the above entry. The extreme temperature and pressure gradients mentioned do not stop when the atmospheric temperature and pressure increase beyond water's freezing point.  Soon the temperature reaches past the boiling point, and on up to thousands of degrees and unimaginably high pressures, increasing further until reaching the central core. The cores of Neptune and Uranus most likely consist of rock (superheated silicates, iron and nickel) or in the case of Saturn and Jupiter of liquid {{w|metallic hydrogen}}, where the extreme high-pressure and temperature causes {{w|hydrogen}} to behave like a metal. This is only a hypothesis, as it is not something our technology is currently able to reproduce. The suggested simulation of this environment is to fall into a super hot bath tub that falls into the burning engine room of a ship that is sinking, and thus is about be crushed by the water pressure of the deep ocean.  This is the closest representation of the pressure and temperature conditions of the inner parts of the gas giants that can be imagined on Earth, but of course the cores of these planets are far, far more inhospitable than the scenarios mentioned above. Descending into Jupiter was also explored in the [[what if|what if?]] {{what if|138|Jupiter Submarine}}.
+The title text continues the last entry in the main comic, so this explanation is also a direct continuation of the above entry. The extreme temperature and pressure gradients mentioned do not stop when the atmospheric temperature and pressure increase beyond water's freezing point.  Soon the temperature reaches past the boiling point, and on up to thousands of degrees and unimaginably high pressures, increasing further until reaching the central core. The cores of Neptune and Uranus most likely consist of rock (superheated silicates, iron and nickel) or in the case of Saturn and Jupiter of liquid {{w|metallic hydrogen}}, where the extreme high-pressure and temperature causes {{w|hydrogen}} to behave like a metal. The suggested simulation of this environment is to fall into a super hot bath tub that falls into the burning engine room of a ship that is sinking, and thus is about be crushed by the water pressure of the deep ocean.  This is the closest representation of the pressure and temperature conditions of the inner parts of the gas giants that can be imagined on Earth, but of course the cores of these planets are far, far more inhospitable than the scenarios mentioned above. Descending into Jupiter was also explored in the [[what if|what if?]] {{what if|138|Jupiter Submarine}}.
 ==Transcript==