Autor Tema: Mars Atmosphere and Volatile Evolution Mission MAVEN  (Posjeta: 5794 vremena)

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Offline Danijel

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #10 u: 22.09.2014. u 15:41:39 sati »
Da se vratimo na temu... :286:

[youtube]http://www.youtube.com/watch?v=Z4MXuw7-8ow&feature=youtu.be[/youtube]

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #11 u: 22.09.2014. u 18:02:15 sati »
No dobro da se ne jedi "čika" @Todor evo spiska svih uspešnih & onih koje nisu bile te sreće misija na Mars, verovatno je mislio da se pozove na to kako Mars bije glas "uklete planete" kada su u pitanju astronautička istraživanja.

Ruku na srce ne mogu da se otmem utisku a da ne primetim izrazitu "uspešnost crvenih sondi"...


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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #12 u: 24.09.2014. u 12:06:25 sati »
[youtube]http://www.youtube.com/watch?v=HHYsTvanNY4[/youtube]

Offline Danijel

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #13 u: 24.09.2014. u 12:15:22 sati »
Izvrsno, tamo je nastala gužva :215: [71*

| Teleskopi: SkyWatcher MAK 127 / 1500 i Celestron 11 SCT 280 / 2800 |
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| Montaža: NEQ-6 PRO GoTo SkyScan | Dvogledi: Panorama 8 x 56 i TS 20 x 90 |
| Lokacija: φ = 45°49'11" N,  λ = 17°21'26" E,  h = 135 m. |
| SVIJET FOTONA | ZVJEZDARNICA APOLLO |

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #14 u: 24.09.2014. u 12:28:50 sati »
Izvrsno, tamo je nastala gužva :215: [71*

Naravno tako i treba da bude a za jedno 50-ak godina u Marsovoj orbiti ploviće velika stanica sa logom...

Offline Danijel

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #15 u: 24.09.2014. u 12:38:22 sati »
Hehe, taj film nećemo još duuuugoooo gledati :twisted:

| Teleskopi: SkyWatcher MAK 127 / 1500 i Celestron 11 SCT 280 / 2800 |
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| Montaža: NEQ-6 PRO GoTo SkyScan | Dvogledi: Panorama 8 x 56 i TS 20 x 90 |
| Lokacija: φ = 45°49'11" N,  λ = 17°21'26" E,  h = 135 m. |
| SVIJET FOTONA | ZVJEZDARNICA APOLLO |

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #16 u: 26.09.2014. u 22:36:54 sati »
Evo i osvrta najstarijeg astronomskog časopisa na svetu "Sky & Telescope"...
http://www.skyandtelescope.com/astronomy-news/mars-orbiter-mission-arrives-092320143/?et_mid=694711&rid=246892182

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« Zadnja izmjena: 28.09.2014. u 16:07:18 sati od Accuphase »

Offline Fire

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Odg: Mars Atmosphere and Volatile Evolution Mission MAVEN
« Odgovori #18 u: 22.11.2014. u 01:19:41 sati »
Kako je komet  Siding Spring "začinio" Marsovu atmosferu metalima snimio je MAVEN.
Peek vrijednosti je kakvih 24h nakon najbližeg prolaza koliko se da vidjeti iz grafikona.

Citat:
11.07.2014
Ions of Eight Metals from Comet Dust Detected in Mars Atmosphere
These eight graphs present data from a mass spectrometer on NASA's MAVEN orbiter identifying metal ions added to the Martian atmosphere shortly after comet C/2013 A1 Siding Spring sped close to Mars.

MAVEN's Neutral Gas and Ion Mass Spectrometer (NGIMS) directly samples the composition of Mars' upper atmosphere when the spacecraft dips into the top of the atmosphere during each elongated orbit. These graphs show count rates of specific types of metal ions from each of multiple dips during the period from Oct. 18 to Oct. 23, 2014. The time of the comet's closest approach to Mars is marked with a vertical line on each graph. Measurements were suspended temporarily around that time.

The vertical axis is detector count rates, with different scales for the different types of metals. The pattern for each metal is similar: no detection in the days preceding the comet flyby, a sharp peak shortly after the flyby, then a rapid return to virtually no detections.

The detected metals sodium and manganese each exist naturally as only one isotope. The detection charts include more than one isotope for nickel, magnesium, chromium, iron and zinc. Only one of potassium's three isotopes was detected.

The detection peaks resulted from dust particles that had been released by the comet's nucleus vaporizing as they entered the Martian atmosphere at high speed.

Citat:
11.07.2014
Comet Meteor Shower Put Magnesium and Iron into Martian Atmosphere
The places where the red line on this graph extends higher than the blue line show detection of metals added to the Martian atmosphere from dust particles released by a passing comet.

The graphed data are from the Imaging Ultraviolet Spectrograph (IUVS) on NASA's MAVEN spacecraft, which recorded the intensities of emission by ingredients in the Martian atmosphere just before (blue line) and after (red line) comet C/2013 A1 Siding Spring sped within about 87,000 miles (139,500 kilometers) of Mars on Oct. 19, 2014.

The "before" line records the usual main gases in the atmosphere, primarily carbon dioxide and its byproducts. The "after" line includes those plus peaks at 280 nanometer wavelength -- a fingerprint of ionized magnesium -- and other wavelengths that are fingerprints of iron. Researchers interpret this change as a result of vaporization of dust particles that came from the comet and entered the Martian atmosphere at high speed.

IUVS uses limb scans to map the chemical makeup and vertical structure across Mars' upper atmosphere.