Mars - miscellaneous anomalies

[MattEU]

O Michael Goodspeed! (is how EU people should say OMG!)

i have seen some EU things in my time but that is either one of the most amazing, or, even more proof and evidence for water on Mars ...



any more on where and what?

[Steve Smith]

Here are some anaglyph close-ups of the crater. Cyan/blue 3D glasses required. I tried to use the gray-scale images but the depressions kept becoming mounds in my mind. If anyone wants to check the large gray-scale, look here -- WARNING 206 megabyte image:

Sand Filled Crater in Medusae Fossae Region

Top left of the crater wall.

Close-up 1

Top center near the crater wall.

Close-up 2

Fulgurites embedded in the crater cliff edges; polygonal formations cut into the rock; fractal scaling; etc. Electrical scarring evidence.

[MickA]

I noticed a twisted rope effect on New Horizon's images of Pluto ...zoom in on the areas running south from the "Icy Mountains" ...
http://www.nasa.gov/mission_pages/newho ... ?id=366735

[Regulus]

Does anyone have any info, or links, relating to the measured versus predicted gravity on Mars.
Given that gravity in the current model relies on mass, i am wondering if there is a discrepancy between prediction and measurements by the various landers (if they had such a sensor on board). And if so, by what percentage they two were different.

Thx in advance - Trevor

[D_Archer]

I do not think there would be much discrepancy, the charge effects become greater the smaller the body, i think mainstream is accurate about the gravity on Mars.


I searched and i think MRO did some measurements but about gravity anomalies > http://www.hou.usra.edu/meetings/lpsc2014/pdf/2479.pdf

not much data...

Regards,
Daniel

[Regulus]

Thanks Daniel.
Thx for the link.
You're right, there isn't a lot of data on the subject.

Trevor

[jtb]

Should be very easy to test gravity on Mars since it's a downward push. Transport a bathroom scale to Mars with a known weight on top and compare the difference. Much more complicated than that but that's the concept.

[Aardwolf]

Phobos & Deimos orbits identify the strength of gravity on Mars.

[Terminus]

Phobos & Deimos orbits identify the strength of gravity on Mars.

Perhaps, but I don't think gravity is the only force that determines orbital path. Electromagnetism must play, at minimum, a repulsive role, but also, it likely plays an attractive role as well.

Thus the need for measurement

[D_Archer]

The smaller the body the bigger role E/M plays.

Gravity influence diminishes with radius getting smaller

So yes Phobos and Deimos have their orbits also thanks to electrical interactions.

Regards,
Daniel

[comingfrom]

Phobos & Deimos orbits identify the strength of gravity on Mars.

Their densities calculate so low, that it is speculated that they are porous, or hollow.
My speculation is that there is something missing from their gravity calculations.

Looking for a reference, I found

From Space.com info page on Phobos

The moon is so small that a 150-pound person standing on its surface would weigh only two ounces.

Mass: 1.0659 x 10^16 kg
Density: 1.872 g/cm^3

Ah, here we go... from the ESA info page on Deimos.

Despite remote sensing investigation by Mars Express, Mars Reconnaissance Observer and Mars Global Surveyor, the composition of Deimos has not been resolved. The composition is a key indicator in the search for the origins of Deimos and Phobos. Data from the Mars Express OMEGA spectrometer suggest that Deimos has a primitive composition. Like Phobos, Deimos is thought to be quite porous.

Mass: 1.5 × 1015 kg

Density is 1.7 gm/cm^3
ESA page didn't have the density.

~Paul

[Aardwolf]

Phobos & Deimos orbits identify the strength of gravity on Mars.

Their densities calculate so low, that it is speculated that they are porous, or hollow.
My speculation is that there is something missing from their gravity calculations.

Looking for a reference, I found

From Space.com info page on Phobos

The moon is so small that a 150-pound person standing on its surface would weigh only two ounces.

Mass: 1.0659 x 10^16 kg
Density: 1.872 g/cm^3

Ah, here we go... from the ESA info page on Deimos.

Despite remote sensing investigation by Mars Express, Mars Reconnaissance Observer and Mars Global Surveyor, the composition of Deimos has not been resolved. The composition is a key indicator in the search for the origins of Deimos and Phobos. Data from the Mars Express OMEGA spectrometer suggest that Deimos has a primitive composition. Like Phobos, Deimos is thought to be quite porous.

Mass: 1.5 × 1015 kg

Density is 1.7 gm/cm^3
ESA page didn't have the density.

~Paul

I agree the density calculations and mass as the unique driver of gravity is questionable, but the OP query was merely asking if gravity had been measured and it has using its moons. The mass of the moons are irrelevant with respect to measuring Mars gravity.

[GaryN]

Intersecting Channels near Olympica Fossae

What caused this array of various channels and intersecting pits?

Their explanation:
http://www.uahirise.org/media/clips/ESP_045091_2045.mp4
I beg to differ.
http://www.uahirise.org/ESP_045091_2045

[AltClut]

crater on Mars while viewed on google maps (link >here<), unsure of its name, but it is found near the southern pole. my googling skills havent been up to finding a mainstream explanation

[kell1990]

https://www.nasa.gov/sites/default/file ... ra2-16.gif
http://spaceweather.com/images2017/04oc ... _strip.jpg

I hope the links work. If it doesn't then just go to Spaceweather.com and noodle around for it. You'll see it.

+++

The other day "Steve" was sighted again. Same phenomenon complete with the twisted elements, and this time NASA even measured the increase in electrical activity. Do ya suppose it might be a Birkeland current? Of course it is. Maybe it needs to have a poster attached for NASA to get the message.