Author Topic: ESA - Mars Express updates  (Read 126181 times)

Offline bolun

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Re: ESA - Mars Express updates
« Reply #120 on: 09/05/2013 06:50 pm »
A radiating beauty on Mars

5 September 2013

Exceptional structures deposited and shaped by water and winds adorn these interlocking craters and sculpt radiating patterns in the sands of Mars.

This mosaic, which focuses on Becquerel crater in Arabia Terra, is composed of four images taken by the high-resolution stereo camera on ESA’s Mars Express. Arabia Terra is in the transition zone between the southern highlands and the northern lowlands of Mars.

Becquerel crater is named for the 19th-century French physicist Antoine Henri Becquerel (1852–1908), winner of the Nobel Prize in physics in 1903 along with Marie and Pierre Curie for the discovery of radioactivity.

http://www.esa.int/Our_Activities/Space_Science/Mars_Express/A_radiating_beauty_on_Mars

Image credit: ESA/DLR/FU Berlin (G. Neukum)

Offline bolun

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Re: ESA - Mars Express updates
« Reply #121 on: 10/05/2013 10:43 am »
A seasonal ozone layer over the Martian south pole

29 September 2013

For the past decade, ESA's Mars Express orbiter has been observing atmospheric structure on the Red Planet. Among its discoveries is the presence of three separate ozone layers, each with its own characteristics. A new comparison of spacecraft data with computer models explains how global atmospheric circulation creates a layer of ozone above the planet's southern winter pole.

http://sci.esa.int/mars-express/52881-a-seasonal-ozone-layer-over-the-martian-south-pole/

Image credit: ESA/ATG medialab

Offline jacqmans

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Re: ESA - Mars Express updates
« Reply #122 on: 10/11/2013 12:22 pm »
This mosaic of Hebes Chasma is composed of eight single images taken with the High Resolution Stereo Camera on Mars Express, corresponding to orbits 360 (2 May 2004), 2149 (16 September 2005), 3217 (12 July 2006), 5142 (3 January 2008), 5160 (8 January 2008), 5178 (13 January 2008), 6241 (11 November 2008), and 7237 (24 August 2009). The image centre lies at about 1°S / 284°E.

Hebes Chasma is an enclosed, almost 8 km-deep trough stretching 315 km in an east–west direction and 125 km from north to south at its widest point. It sits about 300 km north of the vast Valles Marineris canyon. A flat-topped mesa is located in the centre of Hebes Chasma, which was likely shaped by the action of wind and water.

Credit: ESA/DLR/FU Berlin (G. Neukum)

Read more:
http://www.esa.int/Our_Activities/Space_Science/Mars_Express/Martian_scars
« Last Edit: 10/11/2013 12:22 pm by jacqmans »
Jacques :-)

Offline bolun

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Re: ESA - Mars Express updates
« Reply #123 on: 12/25/2013 08:28 pm »
Mars Express heading towards daring flyby of Phobos

http://blogs.esa.int/mex/2013/12/23/mars-express-heading-towards-daring-flyby-of-phobos/

Quote
   
Late this month, ESA’s Mars Express will make the closest flyby yet of the Red Planet’s largest moon Phobos, skimming past at only 45 km above its surface.

The flyby on 29 December will be so close and fast that Mars Express will not be able to take any images, but instead it will yield the most accurate details yet of the moon’s gravitational field and, in turn, provide new details of its internal structure.

Offline bolun

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Re: ESA - Mars Express updates
« Reply #124 on: 01/08/2014 08:22 am »

Offline eeergo

Re: ESA - Mars Express updates
« Reply #125 on: 02/21/2014 07:25 pm »
-DaviD-

Offline bolun

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Re: ESA - Mars Express updates
« Reply #126 on: 03/06/2014 08:09 pm »
Lava floods the ancient plains of Mars

6 March 2014

Two distinct volcanic eruptions have flooded this area of Daedalia Planum with lava, flowing around an elevated fragment of ancient terrain.

The images were acquired by ESA’s Mars Express on 28 November 2013 towards the eastern boundary of the gigantic Tharsis Montes volcanic region, where the largest volcanoes on Mars are found.

The lava flows seen in this image come from Arsia Mons, the southernmost volcano in the Tharsis complex, which lies around 1000 km to the northwest of the region featured here.

This volcanic region is thought to have been active until tens of millions of years ago, relatively recent on the planet’s geological timescale that spans 4.6 billion years.

http://www.esa.int/Our_Activities/Space_Science/Mars_Express/Lava_floods_the_ancient_plains_of_Mars

Image credit: ESA/DLR/FU Berlin

Offline bolun

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Re: ESA - Mars Express updates
« Reply #127 on: 07/28/2014 02:09 pm »
http://blogs.esa.int/vmc/2014/07/27/earth-seen-from-mars-we-are-here/

Earth seen from Mars: We are here

Image credit: ESA/Mars Express/VMC

Offline bolun

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Re: ESA - Mars Express updates
« Reply #128 on: 12/22/2014 10:24 am »

Offline bolun

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Re: ESA - Mars Express updates
« Reply #129 on: 08/19/2015 08:49 am »
Flight over Atlantis Chaos


Offline bolun

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Re: ESA - Mars Express updates
« Reply #130 on: 09/10/2015 02:52 pm »
Mars south pole and beyond

This sweeping view by ESA’s Mars Express extends from the planet’s south polar ice cap and across its cratered highlands to the Hellas Basin (top left) and beyond.

The image was acquired by the high-resolution stereo camera on ESA’s Mars Express on 25 February 2015. It is a ‘broom calibration’ image, acquired while the spacecraft performed a manoeuvre such that its camera pans over the surface far above the planet, at about 9 900 km.

The ground resolution is about 1 km per pixel at the closest point to the surface. The image was created using data from the nadir channel, the field of view of which is aligned perpendicular to the surface of Mars, and the colour channels of HRSC. These channels have been co-registered using ‘markers’ on the surface, such as a mountain or dark spot, to achieve a common geometry. That is, for each colour channel, these markers are overlain to produce the colour image. This process is not needed for ‘normal’ nadir observations because the geometry is known here, unlike in this broom observation.

Related article:

- Sweeping over the south pole of Mars

http://www.esa.int/Our_Activities/Space_Science/Mars_Express/Sweeping_over_the_south_pole_of_Mars

Image credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

http://www.esa.int/spaceinimages/Images/2015/09/Mars_south_pole_and_beyond

Offline Nomadd

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Re: ESA - Mars Express updates
« Reply #131 on: 09/10/2015 04:11 pm »
http://blogs.esa.int/vmc/2014/07/27/earth-seen-from-mars-we-are-here/

Earth seen from Mars: We are here

Image credit: ESA/Mars Express/VMC

I can see my house.
Those who danced were thought to be quite insane by those who couldn't hear the music.

Offline bolun

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Re: ESA - Mars Express updates
« Reply #132 on: 11/13/2015 01:44 pm »
Mars’ night-time aurora

Using 10 years of data from Mars Express, scientists have for the first time combined remote sensing observations of localised ultraviolet aurora with in situ measurements of electrons hitting the atmosphere, finding these rare light emissions only occur under special magnetic field conditions.

Centre: Locations of the 19 auroral detections (white circles) by SPICAM on the Mars nightside in the southern hemisphere, over locations already known to be associated with residual crustal magnetism. The data is superimposed on the magnetic field line structure (from NASA’s Mars Global Surveyor) where red indicates closed magnetic field lines, grading through yellow, green and blue to open field lines in purple. The auroral emissions are very short-lived, they are not seen to repeat in the same locations, and only occur near the boundary between open and closed magnetic field lines (also visualised top right).

Bottom right: SPICAM limb observations enabled the altitude of some of the auroral events to be determined as 137+/- 27 km.

Full story: Shining a light on the aurora of Mars

http://www.esa.int/spaceinimages/Images/2015/11/Mars_night-time_aurora

Image credit: Spacecraft: ESA/ATG medialab; data: J-C. Gérard & L. Soret (2015)

Offline eeergo

Re: ESA - Mars Express updates
« Reply #133 on: 01/28/2016 01:59 pm »
The close-approach Phobos imaging sequence wasn't saved due to a recurrent error with the mass memory that happened during the latest Phobos flyby. Other science data (radar, particle and plasma) was saved and transmitted back.

http://blogs.esa.int/mex/2016/01/28/update-on-phobos-flyby-science-results/
-DaviD-

Offline bolun

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Re: ESA - Mars Express updates
« Reply #134 on: 03/29/2016 10:35 am »
Hellas Basin rim

A portion of the vast Hellas Basin, incorporating the transition of the fractured, terraced rim (top) into the smoother frost-covered basin floor (bottom).

The region was imaged by the High Resolution Stereo Camera on ESA’s Mars Express on 6 December 2015 during orbit 15127. The image is centred on 45ºS/48ºE and the ground resolution is about 52 m per pixel.

Related article: Frosty martian valleys

http://www.esa.int/spaceinimages/Images/2016/03/Hellas_Basin_rim

Image credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

Offline bolun

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Offline bolun

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Re: ESA - Mars Express updates
« Reply #136 on: 07/01/2016 01:53 pm »
http://blogs.esa.int/mex/2016/06/15/mars-express-chats-with-curiosity-practice-makes-perfect/

Quote
.... Mars Express established a communication link with NASA's Curiosity rover (MSL) on the surface of Mars to conduct an important test prior to the arrival of ESA's ExoMars Trace Gas Orbiter (TGO), carrying the the ExoMars Entry, Descent and Landing Demonstrator Module (EDM), Schiaparelli, in October.

The test saw Curiosity serve as a stand-in (rove-in?) for Schiaparelli on the surface, transmitting a signal to MEX similar to how Schiaparelli will transmit during landing on 19 October. From orbit above, MEX had its lander communication system (Melacom) – with recently updated software – configured as it will be in October, and the orbiter tested receiving signals from below.


Offline bolun

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Re: ESA - Mars Express updates
« Reply #138 on: 12/06/2016 08:02 pm »
New evidence for a warmer and wetter early mars

06 December 2016

A recent study from ESA's Mars Express and NASA's Mars Reconnaissance Orbiter (MRO) provides new evidence for a warm young Mars that hosted water across a geologically long timescale, rather than in short episodic bursts – something that has important consequences for habitability and the possibility of past life on the planet.

http://sci.esa.int/mars-express/58613-new-evidence-for-a-warmer-and-wetter-early-mars/

Offline eeergo

-DaviD-

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