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Astronomy Picture of the Day -- Phobos: Doomed Moon of Mars
NASA ^ | October 28, 2012 | (see photo credit)

Posted on 10/28/2012 11:59:25 AM PDT by SunkenCiv

Explanation: This moon is doomed. Mars, the red planet named for the Roman god of war, has two tiny moons, Phobos and Deimos, whose names are derived from the Greek for Fear and Panic. These martian moons may well be captured asteroids originating in the main asteroid belt between Mars and Jupiter or perhaps from even more distant reaches of the Solar System. The larger moon, Phobos, is indeed seen to be a cratered, asteroid-like object in this stunning color image from the Mars Reconnaissance Orbiter, recorded at a resolution of about seven meters per pixel. But Phobos orbits so close to Mars -- about 5,800 kilometers above the surface compared to 400,000 kilometers for our Moon -- that gravitational tidal forces are dragging it down. In 100 million years or so Phobos will likely be shattered by stress caused by the relentless tidal forces, the debris forming a decaying ring around Mars.

October 28, 2012

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; bodeslaw; deimos; phobos; rochelimit; rocheradius; science; thuria; titiusbode; titiusbodelaw; titiusbodeslaw
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[Credit: HiRISE, MRO, LPL (U. Arizona), NASA ]

1 posted on 10/28/2012 11:59:33 AM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...

2 posted on 10/28/2012 12:00:27 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Is that ice or metal on the surface?


3 posted on 10/28/2012 12:02:43 PM PDT by wastedyears (The First Law of Heavy Metal: Not all metal is satanic.)
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To: wastedyears

Pure platinum.


4 posted on 10/28/2012 12:05:02 PM PDT by The KG9 Kid (Semper Fi)
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To: SunkenCiv

What they need to do is ram about 50 or so of these into Mars to boost the planet’s gravity and make it more suitable for human life.


5 posted on 10/28/2012 12:08:10 PM PDT by Brilliant
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To: wastedyears

It’s the streets of a martian trailer park.


6 posted on 10/28/2012 12:11:54 PM PDT by bgill (Evil doers are in every corner of our government. Have we passed the point of no return?)
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To: SunkenCiv

That is one cool rock. It would look great in my collection.


7 posted on 10/28/2012 12:13:37 PM PDT by bigheadfred
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To: SunkenCiv

Cool. That one crater on the far right side of the pic almost looks like a rocket booster surrounded by millions of years of debris collection


8 posted on 10/28/2012 12:20:42 PM PDT by GeronL (http://asspos.blogspot.com)
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To: SunkenCiv

I followed the pic links.... is that image large enough? lol.

Of course I copied it to my HDD


9 posted on 10/28/2012 12:23:53 PM PDT by GeronL (http://asspos.blogspot.com)
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To: SunkenCiv

It’s “Fear’’ and “Terror’’.’’ Demos’’ is ‘’terror’’.


10 posted on 10/28/2012 12:25:16 PM PDT by jmacusa (Political correctness is cultural Marxism. I'm not a Marxist.)
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To: GeronL; SunkenCiv

11 posted on 10/28/2012 12:32:23 PM PDT by bigheadfred
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To: SunkenCiv
Of course, 100 million years from now, when Phobos crashes into the surface of Mars, it will be George W. Bush's fault.

How many craters on Mars are the result of earlier Phobos-like moons crashing into the planet?

The original sense of "phobos" was "flight" (the related verb "phebomai" means "to be put to flight"), and according to the lexicon that is the only meaning of "phobos" in Homer. Later it becomes "panic fear" (such as causes flight), then "fear" more generally.

12 posted on 10/28/2012 12:41:22 PM PDT by Verginius Rufus
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To: SunkenCiv

i’d be most interested in what caused the drag lines?? Some lines were made before craters, others were made after craters. hhhmmmmmmm...


13 posted on 10/28/2012 12:41:40 PM PDT by sit-rep
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To: bigheadfred

lol.


14 posted on 10/28/2012 12:47:11 PM PDT by GeronL (http://asspos.blogspot.com)
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To: SunkenCiv

A spot of Bondo and a little rubbing compound will take that right out.


15 posted on 10/28/2012 12:48:10 PM PDT by The Cajun (Sarah Palin, Mark Levin......Nuff said.)
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To: bigheadfred

LOL! Good stuff.


16 posted on 10/28/2012 12:51:26 PM PDT by FlingWingFlyer (Osama bin Laden is dead, Chrysler moved to Italy and China.)
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To: SunkenCiv

If you weigh 200 pounds on Earth, you’ll weigh 3 ounces on Phobos.


17 posted on 10/28/2012 12:58:07 PM PDT by samtheman (Obama. Mugabe. Chavez. (Obamugavez))
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To: bigheadfred

That’s a spud, Nick.


18 posted on 10/28/2012 12:59:35 PM PDT by fish hawk
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To: SunkenCiv

Has anyone ever explained how the descriptions of the two moons of Mars got into the book Gullivers Travels, years and years before they were ‘dicovered’ by astronomers?


19 posted on 10/28/2012 1:07:22 PM PDT by Balding_Eagle (Liberals, at their core, are aggressive & dangerous to everyone around them,)
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To: The KG9 Kid
The gleaming titanium shell of the abandoned interstellar generation ship is showing through the eons of space dust.
20 posted on 10/28/2012 1:27:36 PM PDT by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both)
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