Messenger (Даёшь Меркурий!)

[sol]

Шикарная стать у кота... (Незаслужено не отражены успехи Маринер-10)
Прикололо - "Пролетев почти 8 млрд км (расстояние как до Плутона в его максимальном удалении), Messenger в очередной раз приблизился к Меркурию"

[instml]

October 5-6, 2015
NASA Headquarters

PSD Status & Findings
Update   J. Green

http://www.lpi.usra.edu/pss/oct2015/presentations/Green.pdf

[Дмитрий Виницкий]

NASA Completes MESSENGER Mission with Expected Impact on Mercury's Surface


A NASA planetary exploration mission came to a planned, but nonetheless dramatic, end Thursday when it slammed into Mercury's surface at about 8,750 mph and created a new crater on the planet's surface.

Mission controllers at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland, have confirmed NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft impacted the surface of Mercury, as anticipated, at 3:26 p.m. EDT.

Mission control confirmed end of operations just a few minutes later, at 3:40 p.m., when no signal was detected by NASA's Deep Space Network (DSN) station in Goldstone, California, at the time the spacecraft would have emerged from behind the planet. This conclusion was independently confirmed by the DSN's Radio Science team, which also was monitoring for a signal from MESSENGER.

http://www.nasa.gov/press-release/nasa-completes-messenger-mission-with-expected-impact-on-mercurys-surface

[Vi1]

Запомним эту дату - 28 апреля 2016 г. - первый рукотворный объект на поверхности Меркурия - жесткая посадка, через 42 года после первого облета АМС "Маринер-10"

[SashaBad]

Vi1 пишет:
Запомним эту дату - 28 апреля 2016 г. - первый рукотворный объект на поверхности Меркурия - жесткая посадка, через 42 года после первого облета АМС "Маринер-10"

Забудьте эту дату.
И запомните 30 апреля 2015 года 19.26:02 UTC. Именно в этот момент КА NASA MESSENGER планово столкнулся с поверхностью Меркурия.
 http://www.nasa.gov/image-feature/best-determination-of-messengers-impact-location

[Vi1]

Последнее изображение


Чем-то напомнило лунный Рейнджер

[Salo]

http://www.seeker.com/shrinking-mercury-is-tectonically-active-2017516064.html

Sep 26, 2016 01:22 PM ET
Shrinking Mercury Is Tectonically Active
NASA's MESSENGER mission spied evidence of current geological activity on the solar system's innermost planet.
 
NASA/JHUAPL/Carnegie Institution of Washington/USGS/Arizona State University
 
If you view the solar system's innermost planet as a static and barren husk, you're only half correct. It turns out that Mercury may not be static at all and actually joins Earth in a very exclusive tectonic club.
In 2015, NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission ended in spectacular style, smashing into the planet's surface after being in orbit since 2011. The spacecraft revolutionized our understanding about Mercury, revealing new facts about the world's magnetic field, composition, the existence of ice in its shady caraters and that the world had physically shrunk since formation.
RELATED: The Incredible Shrinking Mercury
Now, planetary scientists have used observations from MESSENGER during its final months in a low-Mercury orbit to see small geological features called scarps that could have only been formed if Mercury's geology is currently active. In other words, Mercury continues to shrink today.
 
Small graben, or narrow linear troughs, have been found associated with small fault scarps (lower white arrows) on Mercury, and on Earth's moon. NASA/JHUAPL/Carnegie Institution of Washington/Smithsonian Institution

"The young age of the small scarps means that Mercury joins Earth as a tectonically active planet, with new faults likely forming today as Mercury's interior continues to cool and the planet contracts," said senior scientist Tom Watters, of the Smithsonian National Air and Space Museum in Washington, D.C.

WATCH VIDEO: Why Did NASA Crash A Satellite Into Mercury?
Scarps are a well known feature on Mercury's surface, some of which are known to create steep cliffs extending hundreds of miles long and, in some places, reach over a mile high. These geological features were first documented by the flybys of NASA's Mariner 10 spacecraft in the 1970's and later confirmed by MESSENGER. These observations helped planetary scientists reveal that, as the planet cooled over hundreds of millions of years, the entire mass contracted, creating these scarps as the surface buckled under the pressure.
But as MESSENGER made its final orbits around Mercury, it noticed far smaller scarp-like features. If these small scarps were ancient, they should have been eroded away long ago by the continuous erosion of meteoroids and comets, which led Watters and his team to realize these were young features. So, far from being a static world Mercury could be a hothouse of "Mercury-quakes" as the entire planet contracts, further crushing its crust today.
Interestingly, Mercury's scarps are of a similar scale to our moon's scarps, a celestial body that is also currently shrinking.
"This is why we explore," said NASA Planetary Science Director Jim Green at NASA Headquarters in Washington, D.C. "For years, scientists believed that Mercury's tectonic activity was in the distant past. It's exciting to consider that this small planet -- not much larger than Earth's moon -- is active even today."

Source: NASA

[che wi]

This movie was created using data taken by MESSENGER spacecraft. This is not actual video taken by spacecraft this is a 3D visualization.

[Chilik]

Похоже, у северного полюса воды там гораздо больше, чем раньше думали.
На карте красным и жёлтым - она. Площадь залегания - до 3400 кв.км.


View of Mercury's north pole. based on MESSENGER probe data, showing polar deposits of water ice. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington/National Astronomy and Ionosphere Center, Arecibo Observatory.

статья тут: http://onlinelibrary.wiley.com/doi/10.1002/2017GL074723/abstract
"New evidence for surface water ice in small-scale cold traps and in three large craters at the north polar region of Mercury from the Mercury Laser Altimeter"
Authors: Ariel N. Deutsch, Gregory A. Neumann, James W. Head
DOI: 10.1002/2017GL074723

сайт за полный текст хочет денег.