А теперь к Плутону (АМС New Horizons / Новые горизонты)

[putika]

Andrei G пишет:

Карлсон пишет:
а ледники то перемещаются

По моему мало похоже на ледники. Больше похоже на лавовые поля. Что то изливалось из недр и судя по отсутствию кратеров совсем недавно.

А в недрах у нас там что?

[FarEcho]

Обратите внимание, что середина области Sputnik приходится на точку практически в точности противоположную Харону. Есть ощущение, что это "Ж-ж-ж-ж" - неспроста.

[тавот]

FarEcho пишет:
Обратите внимание, что середина области Sputnik приходится на точку практически в точности противоположную Харону. Есть ощущение, что это "Ж-ж-ж-ж" - неспроста.

Видимо полушарие с регионом Томбо более лёгкое, чем противоположное, поэтому при синхронизации Плутона с Хароном и получилось такое положение.Билл Маккиннан на последней пресс-конференции НАСА высказал своё предположение: область Спутник - след мегаимпакта, произошедшего относительно недавно (десятки миллионов лет назад). Крупный астероид, или ядро кометы выбил огромный кратер в поверхности, который и был заполнен растаявшим от удара льдом. Следы течения льда видны на фото на северном участке равнины. Видимо всё это и привело к гравитационной неоднородности Плутона.

[Олег]

 Видимо всё это и привело к гравитационной неоднородности Плутона.

То  есть, что-то вроде анти-маскона ?
Получается ситуация, противоположная паре Земля-Луна. На Луне масконы - в основной на земной стороне. Точнее, наоборот - Луна как Ванька-Встанька повернулась более " травмированной " стороной, как более тяжелой.

[тавот]

Олег пишет:

Тоесть, что-то вроде  анти-маскона ?

Получается да. Плотность льда в толще Спутника меньше плотности остальных участков Плутона. Но это всего лишь предположение.

[тавот]

Олег пишет:

Точнее, наоборот - Луна как Ванька-Встанька повернулась более " травмированной " стороной, как более тяжелой.

Лунные моря заполнены базальтовой лавой, поэтому и более тяжелые. Отсюда и масконы, которые повторяют контуры морей.

[FarEcho]

А на Титане в аналогичной позиции область Xanadu. Тоже уникальное образование и тоже повышенное альбедо. Хм...

[che wi]

Global Map of Pluto's Moon Charon
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=264

The science team of NASA's New Horizons mission has produced this global map of Pluto's largest moon, Charon. The map includes all available resolved images of the surface acquired between July 7-14, 2015, at pixel resolutions ranging from 40 kilometers (24 miles) on the anti-Pluto facing hemisphere (left and right sides of the map), to 400 meters (1,250 feet) per pixel on portions of the Pluto-facing hemisphere – the side facing the New Horizons spacecraft when it flew past the dwarf planet – at map center. Many additional images now stored on the spacecraft's digital data recorders are expected to be transmitted "home" in fall 2015 and these will be used to complete the global map. The map is in simple cylindrical projection, with zero longitude (the Pluto-facing direction) in the center.

Informal Names for Features on Pluto's Moon Charon
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=262

[che wi]

Global Map of Pluto (with grid)
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=254

The science team of NASA's New Horizons mission has produced an updated global map of the dwarf planet Pluto. The map includes all resolved images of the surface acquired between July 7-14, 2015, at pixel resolutions ranging from 40 kilometers (24 miles) on the Charon-facing hemisphere (left and right sides of the map) to 400 meters (1,250 feet) on the anti-Charon facing hemisphere (map center). Many additional images are expected in fall of 2015 and these will be used to complete the global map.

Informal Names for Features on Pluto
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=263

[Александр Ч.]

All the #PlutoFlyby data from SDC/SWAP/PEPSSI will be downloaded this month; the big imaging and spectroscopy download begin in September!

[pkl]

Ждём-с! Ых, дожить бы! :oops:

[RustemNur]

3500 дней в полете

[Александр Ч.]

Stephen Clark ‏@StephenClark1  20 мин.20 минут назад

Alan Stern: 95% of Pluto data still on NH spacecraft, data downloads resume end of next week. I was told previously next pix arrive Sept. 5.

Dan Leone ‏@Leone_SN  2 мин.2 минуты назад

.@NewHorizons2015 will go "a lot closer" to one of two candidate Kuiper Belt Objects in 2019 than it got to Pluto, @AlanStern says. #OPAG

Dan Leone ‏@Leone_SN  4 мин.4 минуты назад

CORRECTION: @NewHorizons2015 data download begins Saturday, Sept. 5, @AlanStern says (I said that was a Friday. Mea culpa). #OPAG

Dan Leone ‏@Leone_SN  22 мин.22 минуты назад

OOPS that's a Friday! #OPAG

Dan Leone ‏@Leone_SN  22 мин.22 минуты назад

Saturday, Sept. 5, to be precise! #OPAG

Dan Leone ‏@Leone_SN  23 мин.23 минуты назад

Next week, @NewHorizons2015 starts year-long data download. Data still aboard are mission's best, flashiest stuff, @AlanStern says. #OPAG[/LIST]

[che wi]

Наконец определились с целью №2, выбрали кандидата PT1 – астероид 2014 MU69 (1110113Y).
Официальное решение о продлении миссии еще не принято.

NASA's New Horizons Team Selects Potential Kuiper Belt Flyby Target
http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20150828

NASA has sel ected the potential next destination for the New Horizons mission to visit after its historic July 14 flyby of the Pluto system. The destination is a small Kuiper Belt object (KBO) known as 2014 MU69 that orbits nearly a billion miles beyond Pluto.

This remote KBO was one of two identified as potential destinations and the one recommended to NASA by the New Horizons team. Although NASA has sel ected 2014 MU69 as the target, as part of its normal review process the agency will conduct a detailed assessment before officially approving the mission extension to conduct additional science.

"Even as the New Horizon's spacecraft speeds away fr om Pluto out into the Kuiper Belt, and the data from the exciting encounter with this new world is being streamed back to Earth, we are looking outward to the next destination for this intrepid explorer," said John Grunsfeld, astronaut and chief of the NASA Science Mission Directorate at the agency headquarters in Washington. "While discussions whether to approve this extended mission will take place in the larger context of the planetary science portfolio, we expect it to be much less expensive than the prime mission while still providing new and exciting science."

Like all NASA missions that have finished their main objective but seek to do more exploration, the New Horizons team must write a proposal to the agency to fund a KBO mission. That proposal – due in 2016 – will be evaluated by an independent team of experts before NASA can decide about the go-ahead.

Early target selection was important; the team needs to direct New Horizons toward the object this year in order to perform any extended mission with healthy fuel margins. New Horizons will perform a series of four maneuvers in late October and early November to set its course toward 2014 MU69 – nicknamed "PT1" (for "Potential Target 1") – which it expects to reach on January 1, 2019. Any delays from those dates would cost precious fuel and add mission risk.

Спойлер

"2014 MU69 is a great choice because it is just the kind of ancient KBO, formed wh ere it orbits now, that the Decadal Survey desired us to fly by," said New Horizons Principal Investigator Alan Stern, of the Southwest Research Institute (SwRI) in Boulder, Colorado. "Moreover, this KBO costs less fuel to reach [than other candidate targets], leaving more fuel for the flyby, for ancillary science, and greater fuel reserves to protect against the unforeseen."

New Horizons was originally designed to fly beyond the Pluto system and explore additional Kuiper Belt objects. The spacecraft carries extra hydrazine fuel for a KBO flyby; its communications system is designed to work from far beyond Pluto; its power system is designed to operate for many more years; and its scientific instruments were designed to operate in light levels much lower than it will experience during the 2014 MU69 flyby.

The 2003 National Academy of Sciences' Planetary Decadal Survey ("New Frontiers in the Solar System") strongly recommended that the first mission to the Kuiper Belt include flybys of Pluto and small KBOs, in order to sample the diversity of objects in that previously unexplored region of the solar system. The identification of PT1, which is in a completely different class of KBO than Pluto, potentially allows New Horizons to satisfy those goals.

But finding a suitable KBO flyby target was no easy task. Starting a search in 2011 using some of the largest ground-based telescopes on Earth, the New Horizons team found several dozen KBOs, but none were reachable within the fuel supply aboard the spacecraft.

The powerful Hubble Space Telescope came to the rescue in summer 2014, discovering five objects, since narrowed to two, within New Horizons' flight path. Scientists estimate that PT1 is just under 30 miles (about 45 kilometers) across; that's more than 10 times larger and 1,000 times more massive than typical comets, like the one the Rosetta mission is now orbiting, but only about 0.5 to 1 percent of the size (and about 1/10,000th the mass) of Pluto. As such, PT1 is thought to be like the building blocks of Kuiper Belt planets such as Pluto.

Unlike asteroids, KBOs have been heated only slightly by the Sun, and are thought to represent a well preserved, deep-freeze sample of what the outer solar system was like following its birth 4.6 billion years ago.

"There's so much that we can learn from close-up spacecraft observations that we'll never learn from Earth, as the Pluto flyby demonstrated so spectacularly," said New Horizons science team member John Spencer, also of SwRI. "The detailed images and other data that New Horizons could obtain from a KBO flyby will revolutionize our understanding of the Kuiper Belt and KBOs." The New Horizons spacecraft – currently 3 billion miles [4.9 billion kilometers] fr om Earth – is just starting to transmit the bulk of the images and other data, stored on its digital recorders, fr om its historic July encounter with the Pluto system. The spacecraft is healthy and operating normally.

[свернуть]

[Salo]

http://ria.ru/space/20150828/1213817763.html

НАСА выбрало новую цель для научной миссии New Horizons
23:47 28.08.2015
НАСА потенциально выбрало себе цель для научной космической миссии New Horizons - небольшой объект в поясе Койпера под названием 2014 MU69.

© Фото: NASA/JHUAPL/SwRI/Alex Parker

МОСКВА, 28 авг — РИА Новости. НАСА выбрало новую потенциальную цель для научной космической миссии New Horizons — небольшой объект в поясе Койпера под названием 2014 MU69, находящийся почти в миллиарде миль от орбиты Плутона, говорится в сообщении на сайте НАСА.
Для окончательного выбора цели НАСА необходимо будет провести детальную оценку объекта и возможностей по его изучению.
2014 MU69 — транснептуновый объект из пояса Койпера. Если будет решено направить New Horizons к этому астероиду, то аппарат достигнет его в январе 2019 года.
По уточнённым данным, 2014 MU69 имеет диаметр около 60 километров и орбитальный период в 294 года. Астероид был открыт с помощью космического телескопа "Хаббл".

[Александр Геннадьевич Шлядинский]

Пора переиминовывать тему в "А теперь от Плутона".  :-)

[che wi]

To Pluto and Beyond: Animating New Horizons' Flight Through the Pluto System
http://blogs.nasa.gov/pluto/2015/08/28/to-pluto-and-beyond-animating-new-horizons-flight-through-the-pluto-system/

The Pluto system as NASA's New Horizons spacecraft saw it in July 2015. This animation, made with real images taken by New Horizons, begins with Pluto flying in for its close-up on July 14; we then pass behind Pluto and see the atmosphere glow in sunlight before the sun passes behind Charon. The movie ends with New Horizons' departure, looking back on each body as thin crescents.

[Lanista]

[Dude]

Alan Stern: 95% of Pluto data still on NH spacecraft, data downloads resume end of next week. I was told previously next pix arrive Sept. 5.

Ждем 5-го сентября, начнут скачивать с АМС новые снимки....

[che wi]

Dude пишет:

Alan Stern: 95% of Pluto data still on NH spacecraft, data downloads resume end of next week. I was told previously next pix arrive Sept. 5.

Ждем 5-го сентября, начнут скачивать с АМС новые снимки....

Ну так с прошлой недели уже готовимся :)