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Astronomy Picture of the Day -- Phobos 360
NASA ^ | December 25, 2013 | (see photo credit)

Posted on 12/24/2013 9:13:13 PM PST by SunkenCiv

Explanation: What does the Martian moon Phobos look like? To better visualize this unusual object, images from ESA's Mars Express orbiter have been combined into a virtual rotation movie. The rotation is actually a digital illusion -- tidally-locked Phobos always keeps the same face toward its home planet, as does Earth's moon. The above video highlights Phobos' chunky shape and an unusually dark surface covered with craters and grooves. What lies beneath the surface is a topic of research since the moon is not dense enough to be filled with solid rock. Phobos is losing about of centimeter of altitude a year and is expected to break up and crash onto Mars within the next 50 million years. To better understand this unusual world, Mars Express is on course to make the closest flyby ever on Sunday.

December 25, 2013

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; mars; phobos; science
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[Video Credit: Mars Express, ESA]

1 posted on 12/24/2013 9:13:13 PM PST by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
YouTube Video

2 posted on 12/24/2013 9:15:27 PM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: SunkenCiv

IBTNM


3 posted on 12/24/2013 9:35:41 PM PST by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: SunkenCiv
"What lies beneath the surface is a topic of research since the moon is not dense enough to be filled with solid rock."

Marshmallow cream?

Seriously, what could possibly be at the core besides solid rock. Can't be molten magma for something so tiny. Perhaps it's fragmented rock.

4 posted on 12/24/2013 9:36:10 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

Ice. The density of the four inner planets (Mercury, Venus, Earth, and Mars) are similar, and about four times that of Jupiter, Saturn, Uranus, and Neptune, which are similar to each other.


5 posted on 12/24/2013 9:40:25 PM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: SunkenCiv

Captured comet?


6 posted on 12/24/2013 9:43:16 PM PST by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: SunkenCiv

But Jupiter, Saturn, Uranus, and Neptune are all gas giants. Rocky planets like Mercury, Venus, Earth, and Mars, would obviously be much denser than them. I wonder how it stacks up, density-wise, to these rocky planets. Ice at the center would seem to suggest it would have a hollow core. That would be odd, given its rocky exterior.


7 posted on 12/24/2013 9:48:00 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: SunkenCiv

They say here below, with 3 references, that the small moon is known to have “significant porosity” (has internal crevices). I guess that would explain the low over all density.

“Spectroscopically it appears to be similar to the D-type asteroids,[10] and is apparently of composition similar to carbonaceous chondrite material.[11] Phobos’s density is too low to be solid rock, and it is known to have significant porosity.[12][13][14]”

http://en.wikipedia.org/wiki/Phobos_%28moon%29#Physical_characteristics


8 posted on 12/24/2013 9:56:10 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: SunkenCiv

Every time I read the word, “Phobos,” I remember the storyline to the video game, “Doom.”

Pretty scary stuff.
Thanks for the post.


9 posted on 12/24/2013 10:00:17 PM PST by RandallFlagg (IRS = Internal Revenge Service)
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To: BenLurkin

I don’t know what that means.


10 posted on 12/24/2013 10:01:02 PM PST by jim35 (Obama: the second saboteur-in-chief.)
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To: SunkenCiv

Sounds like you could be right about it having some ice in its interior. But it could just as well have had empty space in those internal crevices.

“D-type asteroids have a very low albedo and a featureless reddish electromagnetic spectrum.[citation needed] It has been suggested that they have a composition of organic rich silicates, carbon and anhydrous silicates, possibly with water ice in their interiors.[citation needed] D-type asteroids are found in the outer asteroid belt and beyond; examples are 152 Atala, and 944 Hidalgo as well as the majority of Jupiter’s Trojans.

The Nice model suggests that D-type asteroids may have originated in the Kuiper belts.[1]

http://en.wikipedia.org/wiki/D-type_asteroid


11 posted on 12/24/2013 10:05:18 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: jim35

Institute of Business Travel Management

Or...

Acronym Definition
IBTM Institute of Business Travel Management
*IBTM In Before the Move (internet forums)
IBTM International Business and Technology Management (Lappeenranta University of Technology; Finland)
IBTM In Band Transport Multiplex

http://acronyms.thefreedictionary.com/IBTM


12 posted on 12/24/2013 10:08:47 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: SunkenCiv

13 posted on 12/24/2013 10:18:00 PM PST by Talisker (One who commands, must obey.)
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To: jim35

See post 13


14 posted on 12/24/2013 10:25:57 PM PST by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: Talisker

You got that right, Talisker - the powers that be have intentionally blacked out the part of Phobos they don’t want us to see; This is probably where an extra-terrestrial development is located!


15 posted on 12/24/2013 10:49:33 PM PST by Ken522
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To: SunkenCiv

The one crater looks like it was dug by an antlion.


16 posted on 12/24/2013 10:56:24 PM PST by Darksheare (Try my coffee, first one's free..... Even robots will kill for it!)
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To: Ken522
You got that right, Talisker - the powers that be have intentionally blacked out the part of Phobos they don’t want us to see; This is probably where an extra-terrestrial development is located!

Yeah, I noticed that hyper-blurred section too. Nothing to see there, move along!

17 posted on 12/24/2013 11:17:47 PM PST by Talisker (One who commands, must obey.)
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To: BenLurkin

Old spaceship parked in orbit millions of years ago. It’s hollow.


18 posted on 12/25/2013 12:01:10 AM PST by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
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To: ETL

Hoagland has some ideas!

Part 1
http://www.enterprisemission.com/Phobos.html

Part 2
http://www.enterprisemission.com/Phobos2.html

Astronaut Buzz Aldrin says there is a monolith on Phobos.
http://www.youtube.com/watch?v=UZgJqESAFJI


19 posted on 12/25/2013 5:32:25 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine

If you think that is wild wait until you see what’s on the Moon!

Moon Rising trailer
http://www.youtube.com/watch?v=xd_aOtqMUzA

Moon Rising
http://www.youtube.com/watch?v=kM-P08JcMr8

Object on the Moon mentioned in ‘Moon Rising’ looked at more closely
http://www.youtube.com/watch?v=L_x0abB40mo

Celestial trailer
http://www.youtube.com/watch?v=bVKC_bNU_YM

Celestial
http://www.disclose.tv/action/viewvideo/108630/Jose_Escamilla_Celestial__720p/


20 posted on 12/25/2013 5:43:53 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine
Astronaut Buzz Aldrin says there is a monolith on Phobos.

File:Monolith55103h-crop.jpg

The Phobos monolith is a large rock on the surface of the moon Phobos,[1] which orbits Mars. It is a boulder about 85 m (279 ft) across.[2] A monolith is a geological feature consisting of a single massive piece of rock. Monoliths also occur naturally on Earth, but it has been suggested that the Phobos monolith may be a piece of impact ejecta. The monolith is a bright object near Stickney crater, described as a "building sized" boulder, which casts a prominent shadow.[3][4] It was discovered by Efrain Palermo, who did large surveys of Martian probe imagery, and later confirmed by Lan Fleming, an imaging sub-contractor at NASA Johnson Space Center.

The general vicinity of the monolith is a proposed landing site for a Canadian Space Agency vehicle, funded by Optech and the Mars Institute, for an unmanned mission to Phobos known as PRIME (Phobos Reconnaissance and International Mars Exploration).[3] The PRIME mission would be composed of an orbiter and lander, and each would carry four instruments designed to study various aspects of Phobos' geology.[5] At present, PRIME has not been funded and does not have a projected launch date.

http://en.wikipedia.org/wiki/Phobos_monolith

21 posted on 12/25/2013 6:04:12 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Jack Hydrazine

Some great photos and interesting info at that site you linked to.


22 posted on 12/25/2013 6:06:14 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

Porosity would suggest a formation (perhaps from a larger former body) with high heat, resulting in expansion of various materials such as water into vapor, leaving voids as the vapor eventually escaped. On Earth we see pumice, which would be analogous, but which has the gases still in the voids. One of the problems with excavating Herculanaeum is that the stone has billions of pores still containing the poisonous gases belched up by the 79 AD eruption.


23 posted on 12/25/2013 6:06:24 AM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: ETL
The Phobos monolith is impact eject??? LOL!



When you blow up the pic of it you see faceted sides. Now how did THAT happen?
24 posted on 12/25/2013 6:07:51 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine
Might look like this.

25 posted on 12/25/2013 6:08:34 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: BenLurkin

Mars has craters, but the distribution of those craters shows that many of them on one side of the planet were formed in a single impact event — either a grapeshot-style with a single bolide breaking up from Mars’ gravity and smashing in many places more or less simultaneously, or more likely, one large impact which threw up ejecta. Could have been an earlier moon of Mars that did it, but Mars has more potential exposure to large asteroids than we do. The two moons probably arrived at the same time, as the odds of capture are much better when three bodies are involved, rather than two.


26 posted on 12/25/2013 6:10:27 AM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: RandallFlagg

My pleasure.


27 posted on 12/25/2013 6:12:50 AM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: Jack Hydrazine
When you blow up the pic of it you see faceted sides. Now how did THAT happen?

"The original HiRISE satellite image supplied to Mail Online by the University of Arizona showing a close up of what appears to be a 'monolith' on Mars..."

"speaking about the satellite picture scientist Alfred McEwen, the principal investigator from the University of Arizona's HiRISE department, said: 'There are lots of rectangular boulders on Earth and Mars and other planets.

'Layering from rock deposition combined with tectonic fractures creates right-angle planes of weakness such that rectangular blocks tend to weather out and separate from the bedrock.'

Fuel was added to the flames after Buzz Aldrin, the second man to walk on the Moon, alluded to a similar monolith detected on Mars' moon Phobos.

Speaking on a U.S. cable television channel last week he said: 'We should visit the moons of Mars.

'There's a monolith there - a very unusual structure on this little potato shaped object that goes around Mars once every seven hours."

http://www.dailymail.co.uk/sciencetech/article-1204254/Has-mystery-Mars-Monolith-solved.html

28 posted on 12/25/2013 6:26:08 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Jack Hydrazine
However, I must say, personally, it IS a very strange feature regardless. I mean, we have perfectly formed natural hexagonal columns here on Earth. But they are easily explained, similarly to hexagonal dried mudcracks. But 4 flat sides is very odd in nature.


Adapted from U.S. Geological Survey photo by S. R. Brantley.

Large eruptions of basalt lava may create deep flows of molten rock. As the rock slowly cools it shrinks slightly. The stresses cause jointing in several different planes, and columns of rock form with a generally hexagonal shape, like pencils. The flow shown here is at Sheepeaters Cliff, in Yellowstone National Park. Note that there is a strongly developed horizontal jointing here, too.

The piece of basalt below displays the six-sided cross section of a column. Some columns may have five or seven sides instead.

http://geology.about.com/library/bl/images/blbasaltcolumns.htm

29 posted on 12/25/2013 6:36:48 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Jack Hydrazine
However, I must say, personally, it IS a very strange feature regardless. I mean, we have perfectly formed natural hexagonal columns here on Earth. But they are easily explained, similarly to hexagonal dried mudcracks. But 4 flat sides is very odd in nature.


Adapted from U.S. Geological Survey photo by S. R. Brantley.

Large eruptions of basalt lava may create deep flows of molten rock. As the rock slowly cools it shrinks slightly. The stresses cause jointing in several different planes, and columns of rock form with a generally hexagonal shape, like pencils. The flow shown here is at Sheepeaters Cliff, in Yellowstone National Park. Note that there is a strongly developed horizontal jointing here, too.

The piece of basalt below displays the six-sided cross section of a column. Some columns may have five or seven sides instead.

http://geology.about.com/library/bl/images/blbasaltcolumns.htm

30 posted on 12/25/2013 6:38:08 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Jack Hydrazine

Everything after “But 4 flat sides is very odd in nature.” was from the website I linked to.


31 posted on 12/25/2013 6:38:58 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

Sorry about the dupe. My finger slipped. :)


32 posted on 12/25/2013 6:39:52 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

Let’s send a lander there to see it up close!


33 posted on 12/25/2013 6:45:23 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine
Here from the site you linked is a genuine photo of the surface of Phobos. You can see the parallel lines and layering the piece I posted referred to.

Apparently some are at right angles to each other. That could possibly explain the 4-sided structure of the monolith as impact-ejected rock.


34 posted on 12/25/2013 6:46:24 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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“That could possibly explain the 4-sided structure of the monolith as impact-ejected rock.”-me

But then of course, how could it be that the ‘impact-ejected rock’ came to land perfectly right side up? Unless it perhaps rose straight up from below the surface as a result of an impact.


35 posted on 12/25/2013 6:52:56 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Jack Hydrazine
Let’s send a lander there to see it up close!

Sorry, I can't at this time. Christmas has tapped me out. Maybe sometime afterwards. :)

36 posted on 12/25/2013 6:57:42 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL
Jointing


(c) 2001 Andrew Alden, licensed to About.com, Inc.

Rocks are brittle, so they crack, but they crack very carefully. When this body of gneiss was deep underground during the folding and uplift of the southern Sierra Nevada, the stresses made it fracture. The cracks are called joints. You can see that they come in three different sets. The first set is parallel to the surface of this rock exposure, so that it looks like layers. The second set runs up the photo and the third runs diagonally from upper left to lower right. The stream in the picture has plucked out the resulting joint blocks to form its rugged streambed.

Joints are like faults, except that there is no movement along them. Joint patterns can be mapped to yield insights into the stresses that have affected the region during its geologic history. Sometimes jointing can occur as a body of rock is uncovered by erosion. As the overlying weight is removed, internal stresses may create jointing that results in the erosional process of exfoliation. That is common elsewhere in the Sierra, and perhaps it's an element at this locality too.

http://geology.about.com/library/bl/images/bljointing.htm

37 posted on 12/25/2013 7:03:52 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL
How about these photos of Phobos taken by the Russian's Phobos 2 probe taken with its infrared camera way back in 1989?



Is it natural? Is it caused by weathering?

How about the photo of Mars below taken by the Mars Odyssey by its infrared camera in 2002? NASA tried to pass it off as typical Martian mesas.


38 posted on 12/25/2013 7:06:05 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: ETL
Seriously, what could possibly be at the core besides solid rock. Can't be molten magma for something so tiny. Perhaps it's fragmented rock.

Sugar plums - everyone knows that...

39 posted on 12/25/2013 7:06:31 AM PST by trebb (Where in the the hell has my country gone?)
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To: Jack Hydrazine

Those pics you just posted very well support the idea that the 4-sided feature (”monolith”) is natural, as at least some of the linear features on Phobos (joints, bedding, whatever) ARE at right angles to each other.


40 posted on 12/25/2013 7:25:17 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

“The first indication of intelligent life on Earth lies in the geometric regularity of its constructions ....”
-Carl Sagan (Cosmos)


41 posted on 12/25/2013 7:27:53 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine

So you think someone “built” the entire asteroid, as opposed to just the monolith?


42 posted on 12/25/2013 7:31:40 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Jack Hydrazine

There are plenty of examples of straight lines and flat surfaces in nature. Crystals, for example. Other examples are geologic faults and fault planes. ‘Jointing’ as described above yet another.


43 posted on 12/25/2013 7:37:06 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

That’s a good question. I don’t know.


44 posted on 12/25/2013 7:39:34 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: ETL

That look like the photos I have posted? Post examples of what you cite.


45 posted on 12/25/2013 7:40:25 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine

Simply because there are some linear features that run at right angles to each other?


46 posted on 12/25/2013 7:40:53 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

Post examples you cite.


47 posted on 12/25/2013 7:41:49 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine

Which photos are you referring to? Because I did post pics of what I was describing: jointing, fracturing, etc. I didn’t yet of faults and fault planes, though. But you don’t doubt they exist as linear features on Earth and elsewhere, do you?


48 posted on 12/25/2013 7:44:55 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: ETL

Show me examples of rectilinear faults and planes that look similar to the photos I have posted of Phobos.


49 posted on 12/25/2013 7:49:06 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Jack Hydrazine
Post examples you cite.

Square crystals


50 posted on 12/25/2013 7:52:08 AM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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