History UsefulNotes / TheMoon

6th May '16 10:08:56 AM AnotherGuy
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{{UsefulNotes/Earth}}'s only--or at least, only significant--natural satellite.

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{{UsefulNotes/Earth}}'s only--or at least, only significant--natural satellite.
satellite. While it's referred to as [[SpellMyNameWithAThe the Moon]], it's referred to its Roman name, '''Luna''', when differentiating it with the other satellites in the Solar System. It has been named Selene, Cynthia, and Diane by the Roman and Greek ancients as well. Of course, this is where the word "lunar" comes from, as well as the Greek prefix seleno- (e.g selenophobia, fear of the moon.)
21st Feb '16 5:59:43 PM harharhar
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Sadly, the moon will not be with us forever. Those same tidal forces that pull on the Earth's oceans and locked the same face of the moon toward the Earth are also, very slowly, widening the moon's orbit. [[note]]Currently, every year the moon is about 2 inches farther away than the year prior.[[/note]] In a short time (on a geological scale, at least), the moon will be too far away to cause total solar eclipses. [[note]]Which actually results in a interesting phenomenon: we are currently in a phase of the moon's orbital life that results in the moon ''just'' being able to cover up the sun during an eclipse. For the dinosaurs, though, the moon would've completely blocked out the sun easily.[[/note]] Eventually, it will be far enough away to leave Earth orbit entirely, and wander through space just like in ''Series/{{Space 1999}}'', though by the time that would actually happen, the Sun will have expanded into a red giant and engulfed the Earth already[[note]]However, the tides caused by the moon are slowing down Earth's rotation and in theory in the far future our planet could end instead being tidally locked to the moon. After this happened, it has been proposed that tides caused by the Sun could cause the moon to approach again -very slowly- to our planet, until it got [[https://en.wikipedia.org/wiki/Roche_limit so close]] that was destroyed by Earth's gravity becoming a ring system similar to Saturn's one but much smaller and denser. Note that those points are just academical, since it's unlikely both the Earth and the moon will survive Sun's expansion into a red giant and they'd take place in a far longer timescale.[[/note]]


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Sadly, the moon will not be with us forever. Those same tidal forces that pull on the Earth's oceans and locked the same face of the moon toward the Earth are also, very slowly, widening the moon's orbit. [[note]]Currently, every year the moon is about 2 inches farther away than the year prior.[[/note]] In a short time (on a geological scale, at least), the moon will be too far away to cause total solar eclipses. [[note]]Which actually results in a interesting phenomenon: we are currently in a phase of the moon's orbital life that results in the moon ''just'' being able to cover up the sun during an eclipse. For the dinosaurs, though, the moon would've completely blocked out the sun easily.[[/note]] Eventually, it will be far enough away to leave Earth orbit entirely, and wander through space just like in ''Series/{{Space 1999}}'', though by the time that would actually happen, the Sun will have expanded into a red giant and engulfed the Earth already[[note]]However, the tides caused by the moon are slowing down Earth's rotation and in theory in the far future our planet could end instead being tidally locked to the moon. After this happened, it has been proposed that tides caused by the Sun could cause the moon to approach again -very slowly- to our planet, until it got [[https://en.wikipedia.org/wiki/Roche_limit so close]] that was destroyed by Earth's gravity becoming a ring system similar to Saturn's one but much smaller and denser. Note that those points are just academical, since it's unlikely both the Earth and the moon will survive Sun's expansion into a red giant and they'd take place in a far longer timescale.[[/note]]
17th Jan '16 3:02:19 PM nombretomado
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* At the beginning of ''StarControlII'' the quest you must do in order to have Commander Hayes and the Earth Starbase in your side is to deal with a base left in the Moon by the Ur-Quan Hierarchy. Once you go there, and especially when you find Fwiffo, you'll find Hayes' reports were ''very'' inaccurate.

to:

* At the beginning of ''StarControlII'' ''VideoGame/StarControlII'' the quest you must do in order to have Commander Hayes and the Earth Starbase in your side is to deal with a base left in the Moon by the Ur-Quan Hierarchy. Once you go there, and especially when you find Fwiffo, you'll find Hayes' reports were ''very'' inaccurate.
28th Oct '15 5:18:15 PM ScorpiusOB1
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Sadly, the moon will not be with us forever. Those same tidal forces that pull on the Earth's oceans and locked the same face of the moon toward the Earth are also, very slowly, widening the moon's orbit. [[note]]Currently, every year the moon is about 2 inches farther away than the year prior.[[/note]] In a short time (on a geological scale, at least), the moon will be too far away to cause total solar eclipses. [[note]]Which actually results in a interesting phenomenon: we are currently in a phase of the moon's orbital life that results in the moon ''just'' being able to cover up the sun during an eclipse. For the dinosaurs, though, the moon would've completely blocked out the sun easily.[[/note]] Eventually, it will be far enough away to leave Earth orbit entirely, and wander through space just like in ''Series/{{Space 1999}}'', though by the time that would actually happen, the Sun will have expanded into a red giant and engulfed the Earth already.

to:

Sadly, the moon will not be with us forever. Those same tidal forces that pull on the Earth's oceans and locked the same face of the moon toward the Earth are also, very slowly, widening the moon's orbit. [[note]]Currently, every year the moon is about 2 inches farther away than the year prior.[[/note]] In a short time (on a geological scale, at least), the moon will be too far away to cause total solar eclipses. [[note]]Which actually results in a interesting phenomenon: we are currently in a phase of the moon's orbital life that results in the moon ''just'' being able to cover up the sun during an eclipse. For the dinosaurs, though, the moon would've completely blocked out the sun easily.[[/note]] Eventually, it will be far enough away to leave Earth orbit entirely, and wander through space just like in ''Series/{{Space 1999}}'', though by the time that would actually happen, the Sun will have expanded into a red giant and engulfed the Earth already.
already[[note]]However, the tides caused by the moon are slowing down Earth's rotation and in theory in the far future our planet could end instead being tidally locked to the moon. After this happened, it has been proposed that tides caused by the Sun could cause the moon to approach again -very slowly- to our planet, until it got [[https://en.wikipedia.org/wiki/Roche_limit so close]] that was destroyed by Earth's gravity becoming a ring system similar to Saturn's one but much smaller and denser. Note that those points are just academical, since it's unlikely both the Earth and the moon will survive Sun's expansion into a red giant and they'd take place in a far longer timescale.[[/note]]
2nd Sep '15 8:47:40 PM HeraldAlberich
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{{UsefulNotes/Earth}}'s only -- or at least, only significant -- natural satellite.

It orbits our planet some 400,000 kilometers away, taking 27.3 days to go all the way around once. (Since the {{UsefulNotes/Earth}} will have moved some distance around {{UsefulNotes/the sun}} by the time the moon has orbited once, it takes a little longer -- 29.5 days total, to be precise -- for the lunar light-cycle to get back around to the same phase it started in.) Tidal forces long ago caused the moon to lock in synchronous rotation with the {{UsefulNotes/Earth}}, so that the same side is always facing us.

Compared to other moons in UsefulNotes/TheSolarSystem, {{UsefulNotes/Earth}}'s moon is really huge compared with the planet it orbits, weighing in at a whopping 1/81 of {{UsefulNotes/Earth}}'s mass and 1/6 of {{UsefulNotes/Earth}}'s surface gravity. By comparison, even [[UsefulNotes/TheMoonsOfSaturn the largest moon of Saturn]] is only 1/4000 of {{UsefulNotes/Saturn}}'s mass. The Moon also has roughly 2/9 the mass of {{UsefulNotes/Mercury}} and is about 1.8 times more massive than all five recognized dwarf planets (Eris, Pluto, Makemake, Haumea, and Ceres), Pluto's satellite Charon (which is more massive than Ceres), and the Asteroid Belt (Ceres excluded) ''combined''. Among the moons of Jupiter and Saturn, only Ganymede, Titan, Callisto, and Io are more massive than the Moon. Of them only Io is dense enough to have a higher surface gravity than the Moon.

Currently, our best guess at how such a humongous companion came into existence is that a UsefulNotes/{{Mars}}-sized planetessimal struck the {{UsefulNotes/Earth}} early in its formation period, which knocked loose a huge chunk of material that eventually cooled, congealed, and settled into the moon's current nearly-circular orbit. However, a recent comparison of the Earth-moon titanium isotope ratio has [[http://www.huffingtonpost.com/2012/03/26/moon-formation-theory-new-study_n_1380127.html thrown this model into question]].

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{{UsefulNotes/Earth}}'s only -- or only--or at least, only significant -- natural significant--natural satellite.

It orbits our planet some 400,000 kilometers away, taking 27.3 days to go all the way around once. (Since the {{UsefulNotes/Earth}} Earth will have moved some distance around {{UsefulNotes/the sun}} by the time the moon has orbited once, it takes a little longer -- 29.longer--29.5 days total, to be precise -- for precise--for the lunar light-cycle to get back around to the same phase it started in.) Tidal forces long ago caused the moon to lock in synchronous rotation with the {{UsefulNotes/Earth}}, Earth, so that the same side is always facing us.

Compared to other moons in UsefulNotes/TheSolarSystem, {{UsefulNotes/Earth}}'s Earth's moon is really huge compared with the planet it orbits, weighing in at a whopping 1/81 of {{UsefulNotes/Earth}}'s Earth's mass and 1/6 of {{UsefulNotes/Earth}}'s Earth's surface gravity. By comparison, even [[UsefulNotes/TheMoonsOfSaturn the largest moon of Saturn]] is only 1/4000 of {{UsefulNotes/Saturn}}'s mass. The Moon also has roughly 2/9 the mass of {{UsefulNotes/Mercury}} and is about 1.8 times more massive than all five recognized dwarf planets (Eris, Pluto, Makemake, Haumea, and Ceres), Pluto's satellite Charon (which is more massive than Ceres), and the Asteroid Belt (Ceres excluded) ''combined''. Among the UsefulNotes/{{the moons of Jupiter Jupiter}} and Saturn, only Ganymede, Titan, Callisto, and Io are more massive than the Moon. Of them only Io is dense enough to have a higher surface gravity than the Moon.

Currently, our best guess at how such a humongous companion came into existence is that a UsefulNotes/{{Mars}}-sized planetessimal planetesimal struck the {{UsefulNotes/Earth}} Earth early in its formation period, which knocked loose a huge chunk of material that eventually cooled, congealed, and settled into the moon's current nearly-circular orbit. However, a recent comparison of the Earth-moon titanium isotope ratio has [[http://www.huffingtonpost.com/2012/03/26/moon-formation-theory-new-study_n_1380127.html thrown this model into question]].



The moon is also the major cause of tides on the {{UsefulNotes/Earth}}. When the moon is directly above you or directly below you (i.e. on the opposite side of the Earth), tides are highest; when it's 90 degrees off to one side of you, tides are lowest. [[{{UsefulNotes/TheSun}} The Sun]] also causes tides, but these tides are much weaker than the moon's.

Sadly, the moon will not be with us forever. Those same tidal forces that pull on the {{UsefulNotes/Earth}}'s oceans and locked the same face of the moon toward the {{UsefulNotes/Earth}} are also, very slowly, widening the moon's orbit[[note]]Currently, every year the moon is about 2 inches farther away than the year prior[[/note]]. In a short time (on a geological scale, at least), the moon will be too far away to cause total solar eclipses[[note]]Which actually results in a interesting phenomenon: we are currently in a phase of the moon's orbital life that results in the moon ''just'' being able to cover up the sun during an eclipse. For the dinosaurs, though, the moon would've completely blocked out the sun easily[[/note]]. Eventually, it will be enough to leave Earth orbit entirely, and wander through space just like in ''[[{{Space1999}} Space: 1999]]'', though by the time that actually happens, the Sun would have expanded into a red giant and englufed the Earth already.

to:

The moon is also the major cause of tides on the {{UsefulNotes/Earth}}.Earth. When the moon is directly above you or directly below you (i.e. on the opposite side of the Earth), tides are highest; when it's 90 degrees off to one side of you, tides are lowest. [[{{UsefulNotes/TheSun}} The Sun]] UsefulNotes/TheSun also causes tides, but these tides are much weaker than the moon's.

Sadly, the moon will not be with us forever. Those same tidal forces that pull on the {{UsefulNotes/Earth}}'s Earth's oceans and locked the same face of the moon toward the {{UsefulNotes/Earth}} Earth are also, very slowly, widening the moon's orbit[[note]]Currently, orbit. [[note]]Currently, every year the moon is about 2 inches farther away than the year prior[[/note]]. prior.[[/note]] In a short time (on a geological scale, at least), the moon will be too far away to cause total solar eclipses[[note]]Which eclipses. [[note]]Which actually results in a interesting phenomenon: we are currently in a phase of the moon's orbital life that results in the moon ''just'' being able to cover up the sun during an eclipse. For the dinosaurs, though, the moon would've completely blocked out the sun easily[[/note]]. easily.[[/note]] Eventually, it will be far enough away to leave Earth orbit entirely, and wander through space just like in ''[[{{Space1999}} Space: 1999]]'', ''Series/{{Space 1999}}'', though by the time that would actually happens, happen, the Sun would will have expanded into a red giant and englufed engulfed the Earth already.



Despite how bright the moon may appear in the night sky, its surface is very very dark. Its albedo is a dismal 7%, which means that 93% of all incident light is absorbed without being reflected back into space. For comparison, {{UsefulNotes/Earth}}'s albedo is around 38%. The difference in color between the light-colored regolith and the dark-colored maria is like the difference between coal dust and ''extra-dark'' coal dust.

Since the moon keeps the same face pointed toward {{UsefulNotes/Earth}} at all times, the far side of the moon can't be seen from the Earth's surface, and it wasn't until the advent of the first space probes that we had any idea what the far side looked like. (It's got a lot less maria and a lot more craters than the near side; the slightly greater density of the dark maria material may be why the maria-rich side ended up facing {{UsefulNotes/Earth}}.) Both the near side and the far side wax and wane through light-and-dark phases, so it's incorrect to call the far side "Music/TheDarkSideOfTheMoon" except during the brief period every month while the moon appears Full in Earth's skies.

to:

Despite how bright the moon may appear in the night sky, its surface is very very dark. Its albedo is a dismal 7%, which means that 93% of all incident light is absorbed without being reflected back into space. For comparison, {{UsefulNotes/Earth}}'s Earth's albedo is around 38%. The difference in color between the light-colored regolith and the dark-colored maria is like the difference between coal dust and ''extra-dark'' coal dust.

Since the moon keeps the same face pointed toward {{UsefulNotes/Earth}} Earth at all times, the far side of the moon can't be seen from the Earth's surface, and it wasn't until the advent of the first space probes that we had any idea what the far side looked like. (It's got a lot less maria and a lot more craters than the near side; the slightly greater density of the dark maria material may be why the maria-rich side ended up facing {{UsefulNotes/Earth}}.Earth.) Both the near side and the far side wax and wane through light-and-dark phases, so it's incorrect to call the far side "Music/TheDarkSideOfTheMoon" except during the brief period every month while the moon appears Full in Earth's skies.






'''Pre-Apollo'''

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'''Pre-Apollo'''
!!!Pre-Apollo



* ''Film/ATripToTheMoon'', the first movie to rely on special effects to tell the story of a trip, featured people getting shot to the moon inside a giant cannon shell -- which gave the Man in the Moon a black eye.

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* ''Film/ATripToTheMoon'', the first movie to rely on special effects to tell the story of a trip, featured people getting shot to the moon inside a giant cannon shell -- which shell--which gave the Man in the Moon a black eye.



* The {{Tintin}} graphic novel ''Explorers on the Moon'' features a surprisingly realistic take on what travelling to the moon would be like, despite being written pre-Sputnik.

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* The {{Tintin}} ''Franchise/{{Tintin}}'' graphic novel ''Explorers on the Moon'' features a surprisingly realistic take on what travelling to the moon would be like, despite being written pre-Sputnik.



* ''[[Literature/TheMouseThatRoared The Mouse on the Moon]]'', the 3rd installment in the ''Mouse that Roared'' series, features the mini-country of Grand Fenwick embroiled in TheSpaceRace with the Americans and Soviets. They get to the moon with a rocket powered by wine fermentation.

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* ''[[Literature/TheMouseThatRoared The Mouse on the Moon]]'', the 3rd installment in the ''Mouse that Roared'' series, features the mini-country of Grand Fenwick embroiled in TheSpaceRace UsefulNotes/TheSpaceRace with the Americans and Soviets. They get to the moon with a rocket powered by wine fermentation.



'''Post-Apollo'''

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'''Post-Apollo'''
!!!Post-Apollo



* ''Film/{{Apollo 13}}'', being based on the RealLife Apollo moon mission, had the moon as the crew's ultimate (original) destination.

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* ''Film/{{Apollo 13}}'', being based on the RealLife [[UsefulNotes/{{NASA}} Apollo moon mission, had mission]], has the moon as the crew's ultimate (original) destination.



* ''[[{{Space1999}} Space: 1999]]'' takes place on Moonbase Alpha in the far distant future year of 1999. A nuclear explosion on the moon's surface knocks it out of Earth orbit, sending it drifting through the galaxy rapidly enough to pass through a new star system every week.
* The pilot episode of ''[[Series/{{Salvage 1}} Salvage 1]]'' features Andy Griffith managing a mission to the moon in a homemade rocket. (They can get away with this because their NASA reject friend has concocted a rocket fuel hundreds of times more efficient than anything the space program has yet put into production.) His intent is to salvage all the "junk" the Apollo astronauts left lying around on the moon and sell it.
* The 1998 miniseries ''[[Series/FromTheEarthToTheMoon From The Earth To The Moon]]'' is about the race for the moon in the 1960's.

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* ''[[{{Space1999}} Space: 1999]]'' ''Series/{{Space 1999}}'' takes place on Moonbase Alpha in the far distant future year of 1999. A nuclear explosion on the moon's surface knocks it out of Earth orbit, sending it drifting through the galaxy rapidly enough to pass through a new star system every week.
* The pilot episode of ''[[Series/{{Salvage 1}} Salvage 1]]'' ''Series/{{Salvage 1}}'' features Andy Griffith managing a mission to the moon in a homemade rocket. (They can get away with this because their NASA reject friend has concocted a rocket fuel hundreds of times more efficient than anything the space program has yet put into production.) His intent is to salvage all the "junk" the Apollo astronauts left lying around on the moon and sell it.
* The 1998 miniseries ''[[Series/FromTheEarthToTheMoon From The Earth To The Moon]]'' ''Series/FromTheEarthToTheMoon'' is about the race for the moon in the 1960's.



29th Aug '15 4:31:24 PM ScorpiusOB1
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* in ''StarControlII'' the quest you must do in order to have Commander Hayes and the Starbase in your side is to deal with a lunar base left there by the Hierarchy. Once you go there, and especially when you find Fwiffo, you'll find Hayes' reports were ''very'' inaccurate.

to:

* in At the beginning of ''StarControlII'' the quest you must do in order to have Commander Hayes and the Earth Starbase in your side is to deal with a lunar base left there in the Moon by the Ur-Quan Hierarchy. Once you go there, and especially when you find Fwiffo, you'll find Hayes' reports were ''very'' inaccurate.
29th Aug '15 4:30:03 PM ScorpiusOB1
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to:

* in ''StarControlII'' the quest you must do in order to have Commander Hayes and the Starbase in your side is to deal with a lunar base left there by the Hierarchy. Once you go there, and especially when you find Fwiffo, you'll find Hayes' reports were ''very'' inaccurate.
17th Jul '15 10:21:28 PM Prfnoff
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* ''Film/RadarMenFromTheMoon'': The moon is inhabited by HumanAliens, who are preparing to invade earth because the moon's atmosphere is getting too thin and dry.
29th Jan '15 12:22:55 PM Jinren
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{{UsefulNotes/Earth}}'s only -- or at least, only significant -- natural satellite. It's official name is "Luna".

to:

{{UsefulNotes/Earth}}'s only -- or at least, only significant -- natural satellite. It's official name is "Luna".
satellite.
3rd Jan '15 6:57:09 AM AnotherGuy
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{{UsefulNotes/Earth}}'s only -- or at least, only significant -- natural satellite.

to:

{{UsefulNotes/Earth}}'s only -- or at least, only significant -- natural satellite.
satellite. It's official name is "Luna".
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http://tvtropes.org/pmwiki/article_history.php?article=UsefulNotes.TheMoon