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

Автор ronatu, 19.08.2005 12:32:00

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0 Пользователи и 3 гостей просматривают эту тему.

Feol

А почему до 14 сентября передачи изображений не будет?
Всем пользователям нравится это сообщение.

che wi

ЦитироватьFeol пишет:
А почему до 14 сентября передачи изображений не будет?
Вот здесь об этом под заголовком "It's hard to get data from Pluto"

pkl

Однако "сердце" уже не совсем на сердце похоже - хоть снимок и пожат, отчётливо виден разный контраст его половинок. И чётко видено огромный округлый бассейн, "море". Кто у нас там пророчествовал о большом кратере на пол. планеты?

А вот границы его... такое ощущение, что и впрямь что-то стекало, сползало. Похоже на ледники.
Вообще, исследовать солнечную систему автоматами - это примерно то же самое, что посылать робота вместо себя в фитнес, качаться.Зомби. Просто Зомби (с)
Многоразовость - это бяка (с) Дмитрий Инфан

Theoristos

#2183
ЦитироватьДмитрий Инфан пишет:
Так не бывает. На маломассивном теле, вроде Плутона, атмосфера должна быть весьма протяжённой и разреженной. Стелиться вдоль поверхности может лишь атмосфера очень массивных планет (гравитация её "прижимает"  ;)  
Да, но там температура 50К.
А экспонента плотности пропорциональна их  отношению.

Григорий Разгон

Цитироватьpkl пишет:
Кто у нас там пророчествовал о большом кратере на пол. планеты?
Вероятно, если будут изображения экваториального пояса, то площадь прогиба ещё может добавиться. По Плутону удачно попала обратная от Харона сторона, а вот по спутнику незадача, только видимая полусфера, но может быть позже, более полные изображения за 10-12 любезно предоставятся для обозрения.

Дмитрий Виницкий

Опять какой-то "прогиб"? Психи теперь круглогодично пишут?
+35797748398

Not

ЦитироватьДмитрий Виницкий пишет:
 Психи теперь круглогодично пишут?
Виницкий, да вы на себя посмотрите!  :D

Liss

Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

Палкин

Активный Плутон! НАСА - срочно приступать к проектированию орбитального аппарата.
А ведь так иногда хочется надеть розовые очки...

Палкин

Спойлер
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Спойлер
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Спойлер

[свернуть]
1. Один (пока единственный) хай-рес снимок Плутона
2. Харон
3. Гидра
А ведь так иногда хочется надеть розовые очки...

sol

#2190
"Там горы высокие, там степи просторные - там ветры летят... по проселкам пылят.... " (с)

Налицо молодая обновляемая поверхность! Кто бы ожидал от такого вроде бы замороженного мира.
Массаракш!

Жизнь - это падение в пропасть неизвестной глубины и заполненную туманом.

Сергей Капустин

облаков к сожалению нет... а я на них надеялся. как-то мертво.

зато около полюса на 2015-07-13, 20:17:35 UTC чуть левее видна горная гряда. Если сравнивать с диаметром планеты и считать склон под 45 градусов, то километров 20 наверно будет вроде... хотя я и тут надеялся на большее.

Атяпа

А у Харона справа на полтретьего люк?!
И днём и ночью кот - учёный!

Salo

http://www.nasa.gov/image-feature/the-icy-mountains-of-pluto
ЦитироватьJuly 15, 2015
Charon's Surprising, Youthful and Varied Terrain
 
 
 
Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of 289,000 miles  (466,000 kilometers).
A swath of cliffs and troughs stretches about 600 miles (1,000 kilometers) from left to right, suggesting widespread fracturing of Charon's crust, likely a result of internal processes. At upper right, along the moon's curving edge, is a canyon estimated to be 4 to 6 miles (7 to 9 kilometers) deep.
Mission scientists are surprised by the apparent lack of craters on Charon. South of the moon's equator, at the bottom of this image, terrain is lit by the slanting rays of the sun, creating shadows that make it easier to distinguish topography. Even here, however, relatively few craters are visible, indicating a relatively young surface that has been reshaped by geologic activity.
In Charon's north polar region, a dark marking prominent in New Horizons' approach images is now seen to have a diffuse boundary, suggesting it is a thin deposit of dark material. Underlying it is a distinct, sharply bounded, angular feature; higher resolution images still to come are expected to shed more light on this enigmatic region.
The image has been compressed to reduce its file size for transmission to Earth. In high-contrast areas of the image, features as small as 3 miles (5 kilometers) across can be seen. Some lower-contrast detail is obscured by the compression of the image, which may make some areas appear smoother than they really are. The uncompressed version still resides in New Horizons' computer memory and is scheduled to be transmitted at a later date.
The image has been combined with color information obtained by New Horizons' Ralph instrument on July 13.
  New Horizons traveled more than three billion miles over nine-and-a-half years to reach the Pluto system.

 Image Credit: NASA-JHUAPL-SwRI
 
Last Updated: July 15, 2015
Editor: Tricia Talbert
"Были когда-то и мы рысаками!!!"

Salo

http://www.nasa.gov/image-feature/the-icy-mountains-of-pluto
ЦитироватьThe Icy Mountains of Pluto
 
 
New close-up images of a region near Pluto's equator reveal a giant surprise: a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy body.
The mountains likely formed no more than 100 million years ago -- mere youngsters relative to the 4.56-billion-year age of the solar system -- and may still be in the process of building, says Jeff Moore of New Horizons' Geology, Geophysics and Imaging Team (GGI). That suggests the close-up region, which covers less than one percent of Pluto's surface, may still be geologically active today.
Moore and his colleagues base the youthful age estimate on the lack of craters in this scene. Like the rest of Pluto, this region would presumably have been pummeled by space debris for billions of years and would have once been heavily cratered -- unless recent activity had given the region a facelift, erasing those pockmarks.
"This is one of the youngest surfaces we've ever seen in the solar system," says Moore.    
Unlike the icy moons of giant planets, Pluto cannot be heated by gravitational interactions with a much larger planetary body. Some other process must be generating the mountainous landscape.
 "This may cause us to rethink what powers geological activity on many other icy worlds," says GGI deputy team leader John Spencer of the Southwest Research Institute in Boulder, Colo.
The mountains are probably composed of Pluto's water-ice "bedrock."
Although methane and nitrogen ice covers much of the surface of Pluto, these materials are not strong enough to build the mountains. Instead, a stiffer material, most likely water-ice, created the peaks. "At Pluto's temperatures, water-ice behaves more like rock," said deputy GGI lead Bill McKinnon of Washington University, St. Louis.
The close-up image was taken about 1.5 hours before New Horizons closest approach to Pluto, when the craft was 478,000 miles (770,000 kilometers) from the surface of the planet. The image easily resolves structures smaller than a mile across.

 Image Credit: NASA-JHUAPL-SwRI
 

 
Last Updated: July 15, 2015
Editor: Tricia Talbert
"Были когда-то и мы рысаками!!!"

Salo

http://www.nasa.gov/image-feature/pluto-the-ice-plot-thickens
ЦитироватьJuly 15, 2015

Pluto: The Ice Plot Thickens
 
 
 
The latest spectra fr om New Horizons Ralph instrument reveal an abundance of methane ice, but with striking differences fr om place to place across the frozen surface of Pluto.
"We just learned that in the north polar cap, methane ice is diluted in a thick, transparent slab of nitrogen ice resulting in strong absorption of infrared light," said New Horizons co-investigator Will Grundy, Lowell Observatory, Flagstaff, Arizona.  In one of the visually dark equatorial patches, the methane ice has shallower infrared absorptions indicative of a very different texture.  "The spectrum appears as if the ice is less diluted in nitrogen," Grundy speculated "or that it has a different texture in that area." 
An Earthly example of different textures of a frozen substance:  a fluffy bank of clean snow is bright white, but compacted polar ice looks blue.  New Horizons' surface composition team, led by Grundy, has begun the intricate process of analyzing Ralph data to determine the detailed compositions of the distinct regions on Pluto.
This is the first detailed image of Pluto fr om the Linear Etalon Imaging Spectral Array, part of the Ralph instrument on New Horizons.  The observations were made at three wavelengths of infrared light, which are invisible to the human eye. In this picture, blue corresponds to light of wavelengths 1.62 to 1.70 micrometers, a channel covering a medium-strong absorption band of methane ice, green (1.97 to 2.05 micrometers) represents a channel wh ere methane ice does not absorb light, and red (2.30 to 2.33 micrometers) is a channel wh ere the light is very heavily absorbed by methane ice.  The two areas outlined on Pluto show wh ere Ralph observations obtained the spectral traces at the right.  Note that the methane absorptions (notable dips) in the spectrum from the northern region are much deeper than the dips in the spectrum from the dark patch.  The Ralph data were obtained by New Horizons on July 12, 2015.

 Image Credit: NASA-JHUAPL-SwRI
 
Last Updated: July 15, 2015
Editor: Tricia Talbert
"Были когда-то и мы рысаками!!!"

Salo

http://www.nasa.gov/image-feature/hydra-emerges-from-the-shadows
ЦитироватьJuly 15, 2015

Hydra Emerges from the Shadows
 
 
 
Since its discovery in 2005, Pluto's moon Hydra has been known only as a fuzzy dot of uncertain shape, size, and reflectivity. Imaging obtained during New Horizons' historic transit of the Pluto-Charon system and transmitted to Earth early this morning has definitively resolved these fundamental properties of Pluto's outermost moon. Long Range Reconnaissance Imager (LORRI) observations revealed an irregularly shaped body characterized by significant brightness variations over the surface. With a resolution of 2 miles (3 kilometers) per pixel, the LORRI image shows the tiny potato-shaped moon measures 27 miles (43 kilometers) by 20 miles (33 kilometers).
Like that of Charon, Hydra's surface is probably covered with water ice, the most abundant ice in the universe. Observed within Hydra's bright regions is a darker circular structure with a diameter of approximately 6 miles (10 kilometers). Hydra's reflectivity (the percentage of incident light reflected from the surface) is intermediate between that of Pluto and Charon. "New Horizons has finally nailed the basic physical properties of Hydra," says Hal Weaver, New Horizons Project Scientist and LORRI science operations lead. "We're going to see Hydra even better in the images yet to come."
Hydra was approximately 400,000 miles away from New Horizons when the image was acquired.

 Image Credit: NASA-JHUAPL-SwRI
 
Last Updated: July 15, 2015
Editor: Tricia Talbert
"Были когда-то и мы рысаками!!!"

Salo

"Были когда-то и мы рысаками!!!"

Dude

#2198
   New Horizon Mission News Conference - July 15

НАСА ТВ: Брифинг 15 июля


ZLDoyle, первая попытка от души раскрасить hi-res снимок поверхности Плутона.
http://www.unmannedspaceflight.com/index.php?act=attach&type=post&id=36950

полярная впадина\долина Харона, вряд ли кратер некруглой формы.
 

Плутон, приблизительное расположение hi-res куска на предыдущем снимке. Зацепили  нижний левый край "сердца", всё-таки оно низменность, но кусок далеко и сбоку, и пока это не столь убедительно.
http://www.unmannedspaceflight.com/index.php?act=attach&type=post&id=36944

Dude

#2199
Недавно мы видели такое на снимках Розетты, "линия\кривая послойной сублимации", двигается как линия степного пожара.
http://www.unmannedspaceflight.com/index.php?act=attach&type=post&id=36947