sexta-feira, 10 de julho de 2015

Olá, Plutão; adeus, Plutão!

Olá!

Finalmente, depois de nove anos de viagem 
através nosso quintal comandado por nosso astro-rei, o Sol, nossa estrela mais próxima,
a sonda New Horizons estará visitando Plutão.

Será uma breve passagem apenas... A Pluto Flyby...
- Meia Hora! -....,
pois que a sonda New Horizons não está instruída para sequer tomar um cafezinho
ou uma xícara de chá com Plutão
(afinal,  encontram-se ambos na direção da constelação 
que nos oferece o Bule de Chá,não é verdade?)....
Não.
A sonda New Horizons estará dando continuidade ao seu passeio 
através nosso quintal celeste,
distanciando-se mais e mais de nós, terráqueos, bem como do Planeta-Anão, Plutão
- este acenando seu lenço encharcado de lágrimas....  
afinal, este planetóide perdeu seu trono de Planeta...;
perdeu seu reinado sem perder sua majestade, porém.

Pluto
http://www.nasa.gov/press-release/nasas-three-billion-mile-journey-to-pluto-reaches-historic-encounter
Pluto nearly fills the frame in this image from the Long Range Reconnaissance Imager (LORRI) aboard NASA’s New Horizons spacecraft, taken on July 13, 2015 when the spacecraft was 476,000 miles (768,000 kilometers) from the surface. This is the last and most detailed image sent to Earth before the spacecraft’s closest approach to Pluto on July 14. The color image has been combined with lower-resolution color information from the Ralph instrument that was acquired earlier on July 13. This view is dominated by the large, bright feature informally named the “heart,” which measures approximately 1,000 miles (1,600 kilometers) across. The heart borders darker equatorial terrains, and the mottled terrain to its east (right) are complex. However, even at this resolution, much of the heart’s interior appears remarkably featureless—possibly a sign of ongoing geologic processes.
Credits: NASA/APL/SwRI


Astronomia Ao Vivo #88 Transmissão AO VIVO da New Horizons passando por Plutão


Prepare-se, Caro Leitor,
para o inesquecível evento
do Encontro entre a New Horizons
e Plutão e sua maior Lua, Caronte,
a acontecer... agora... em 14 de julho!

Com um abraço estrelado,
Janine Milward


Stellarium
Stellarium

Stellarium

Stellarium





Caro Leitor,
Observe na Ilustração abaixo
(extraída da matéria See Pluto in 2015
- revista Sky@Telescope),
as Linhas apresentando o andamento de Plutão em 2015
e o andamento da New Horizons mais recentemente
e o momento do cruzamento entre essas Linhas
- em 14 de julho! -
e a separação posterior dessas mesmas Linhas.






During its fleeting flyby, New Horizons will slice across the Pluto system, turning this way and that to photograph and gather data on everything it can. Crucial occultations are shown that will be used to determine the structure and composition of Pluto’s (and possibly Charon’s) atmosphere. Credit: NASA with additions by the author
During its fleeting flyby, New Horizons will slice across the Pluto system, turning this way and that to photograph and gather data on everything it can. Crucial occultations are shown that will be used to determine the structure and composition of Pluto’s (and possibly Charon’s) atmosphere. Sunlight reflected from Charon will also faintly illuminate Pluto’s backside. Credit: NASA with additions by the author





 http://apod.nasa.gov/apod/ap150709.html
2015 July 9
See Explanation.  Clicking on the picture will download
 the highest resolution version available.
5 Million Miles from Pluto 
Image Credit: NASAJohns Hopkins Univ./APLSouthwest Research Inst.
Explanation: An image snapped on July 7 by the New Horizons spacecraft while just under 5 million miles (8 million kilometers) from Pluto is combined with color data in this most detailed view yet of the Solar System's most famous worldabout to be explored. The region imaged includes the tip of an elongated dark area along Pluto's equator already dubbed "the whale". A bright heart-shaped region on the right is about 1,200 miles (2,000) kilometers across, possibly covered with a frost of frozen methane, nitrogen, and/or carbon monoxide. The view is centered near the area that will be seen during New Horizons much anticipated July 14 closest approach to a distance of about 7,750 miles (12,500 kilometers).
http://apod.nasa.gov/apod/ap150709.html



http://apod.nasa.gov/apod/ap150711.html

2015 July 11
See Explanation.
Moving the cursor over the image will bring up an annotated version.
Clicking on the image will bring up the highest resolution version
available.
Geology on Pluto 
Image Credit: NASAJohns Hopkins Univ./APLSouthwest Research Inst.
Explanation: Pluto is coming into focus. As the robotic New Horizons spacecraft bears down on this unexplored world of the distant Solar System, new features on its surface are becoming evident. In the displayed image taken last Thursday and released yesterday, an unusual polygonal structure roughly 200 kilometers wide is visible on the left, while just below it relatively complex terrain runs diagonally across the dwarf planet. New Horizon's images and data on these structures will likely be studied for years to come in an effort to better understand the geologic history of Pluto and our Solar System. After suffering a troublesome glitch last week, New Horizons will make its historic flyby of Pluto and its moons on Tuesday.

http://apod.nasa.gov/apod/ap150711.html

Pluto Image
Image caption: New Horizons' last look at Pluto's Charon-facing hemisphere reveals intriguing geologic details that are of keen interest to mission scientists. This image, taken early the morning of July 11, 2015, shows newly-resolved linear features above the equatorial region that intersect, suggestive of polygonal shapes. This image was captured when the spacecraft was 2.5 million miles (4 million kilometers) from Pluto.

Image credit: NASA/JHUAPL/SWRI

http://www.nasa.gov/image-feature/new-horizons-last-portrait-of-pluto-s-puzzling-spots#





Pluto
An annotated image of Pluto indicates features and includes a reference globe showing Pluto’s orientation with the equator and central meridian in bold.
http://www.nasa.gov/image-feature/pluto-s-orientation-with-the-equator-and-central-meridian


Pluto and it's moon Charon
http://www.nasa.gov/image-feature/portrait-of-charon-and-pluto

Pluto and Charon





They’re a fascinating pair: Two icy worlds, spinning around their common center of gravity like a pair of figure skaters clasping hands. Scientists believe they were shaped by a cosmic collision billions of years ago, and yet, in many ways, they seem more like strangers than siblings.












Diagrams show New Horizons encounter with Pluto





<ahref="http://www.space.com/27989-new-horizons-pluto-mission-explained-infographic.html"><img alt="Diagrams show New Horizons encounter with Pluto" src="http://i.space.com/images/i/000/044/285/i02/new-horizons-pluto-flyby-150604a-02-copy.jpg?1433443963" /></a>
      <br /> Source <a href="http://www.space.com">SPACE.com: All about our solar system, outer space and exploration</a>.

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http://pluto.jhuapl.edu/gallery/posters.php