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Those Dark Spots on Pluto

 
 
Frank Apisa
 
  2  
Reply Mon 6 Jul, 2015 03:29 am
Following...and thankful for your reminders, Edgar.

We are all waiting for these pictures. Can't tell you how great it is to see this kind of science being done in space.
0 Replies
 
edgarblythe
 
  2  
Reply Wed 8 Jul, 2015 02:35 pm
http://blog.chron.com/sciguy/files/2015/07/7-8-15_pluto_color_new_nasa-jhuapl-swri.jpg
0 Replies
 
edgarblythe
 
  1  
Reply Wed 8 Jul, 2015 08:47 pm
Heart-shaped feature viewed on Pluto's surface
http://www.business-standard.com/article/news-ians/heart-shaped-feature-viewed-on-pluto-s-surface-115070900076_1.html
0 Replies
 
edgarblythe
 
  2  
Reply Fri 10 Jul, 2015 02:07 pm
http://www.motherjones.com/files/imagecache/top-of-content-main/pluto-charon-630px.jpg
oralloy
 
  2  
Reply Fri 10 Jul, 2015 06:44 pm

On July 14, at 7:49:59 a.m. EDT (11:49:59 UTC) NASA's New Horizons spacecraft will make its historic closest approach to the dwarf planet Pluto.

NASA will not be in contact with the spacecraft at closest approach since the spacecraft's instruments will be pointed at Pluto, an orientation that will take the spacecraft's fixed communications antenna off earth point.

Earthlings will need to wait about 13 hours, until about 9 pm EDT, for a signal from the spacecraft to arrive at Earth.

The final pre-flyby images of Pluto will be unveiled during a special broadcast on Tuesday, July 14, to mark the moment New Horizons makes its closest approach to Pluto at 7:49 a.m. EDT.

A program from approximately 8:15 - 9:15 p.m. on July 14 will cover mission operations as the team awaits a signal from the spacecraft indicating its health and that contact has resumed.

The first post-flyby close-up images of Pluto and its moons are scheduled to be released at various times on Wednesday, July 15.

Press Conference July 17 - Time TBD.

http://pluto.jhuapl.edu/Mission/The-Flyby.php
0 Replies
 
edgarblythe
 
  2  
Reply Fri 10 Jul, 2015 10:21 pm
http://cbsnews1.cbsistatic.com/hub/i/2015/07/11/76903c80-4ca2-4c0c-9391-c48a55656add/a41c8732cdef208b7f56b9597cce03e5/071015pluto2.jpg
0 Replies
 
edgarblythe
 
  2  
Reply Sat 11 Jul, 2015 04:20 pm
http://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/nh-pluto-7-11-15.jpg?itok=mgWiNdSw
0 Replies
 
edgarblythe
 
  3  
Reply Sun 12 Jul, 2015 11:44 am
ASTRONOMER'S ASHES NEARING ICY WORLD HE DISCOVERED: PLUTO
http://abc13.com/news/astronomers-ashes-nearing-icy-world-he-discovered-pluto/845243/

http://cdn.abclocal.go.com/content/ktrk/images/cms/845200_800x450.jpg
CAPE CANAVERAL, FL -- Come Tuesday, Clyde Tombaugh will pass within 7,800 miles of the icy world he discovered 85 years ago.

His ashes are flying on NASA's New Horizons spacecraft on humanity's first journey to Pluto.

New Horizons also is carrying a 1991 U.S. postage stamp that's about to become obsolete - it trumpets "Pluto Not Yet Explored" - as well as two state quarters, one representing Florida, home of the launch site, and the other Maryland, headquarters for the spacecraft developers and flight control.

In all, nine small mementos are tucked aboard New Horizons.

There's a good reason there are nine.

When New Horizons rocketed away from Cape Canaveral on Jan. 19, 2006, Pluto was the ninth planet in our solar system. It was demoted to dwarf planet a scant seven months later.

Tombaugh's widow and two children offered up an ounce of his ashes for the journey to Pluto. The ashes of the farm boy-turned-astronomer are in a 2-inch aluminum capsule inscribed with these words:

"Interned herein are remains of American Clyde W. Tombaugh, discoverer of Pluto and the solar system's 'third zone.' Adelle and Muron's boy, Patricia's husband, Annette and Alden's father, astronomer, teacher, punster, and friend: Clyde Tombaugh (1906-1997)"

Annette Tombaugh-Sitze and her younger brother Alden, now in their 70s, plan to be at the flight operation base at Johns Hopkins University's Applied Physics Laboratory in Laurel, Maryland, for Tuesday's historic encounter. Their mother died in 2012 at age 99.

"I think my dad would be thrilled with the New Horizons. I mean, who wouldn't be?" Annette says in a NASA interview posted online. "When he looked at Pluto, it was just a speck of light."

As for the 29-cent stowaway stamp, Pluto is depicted as grayish with orange flecks, an artist's rendering based on what NASA knew about the tiny orb prior to 1991, which wasn't much.

New Horizons' better and better views reveal a copper-colored, icy bright world.

"No stamp has ever traveled this far!" Mark Saunders, a spokesman for the U.S. Postal Service, said in an email last week.

A small cutout of SpaceShipOne is attached to New Horizons; the first manned private space plane achieved suborbital flights in 2004 and won the $10 million Ansari X Prize.

Also on the spacecraft are two U.S. flags as well as two CDs.

One contains the photos of team members.

The other contains 434,738 names of people who signed up online in advance, including this reporter, holder of Certificate No. 64,646.
0 Replies
 
Setanta
 
  1  
Reply Sun 12 Jul, 2015 01:07 pm
Cool stuff, EB . . . thanks . . .
0 Replies
 
edgarblythe
 
  2  
Reply Tue 14 Jul, 2015 08:17 am
https://scontent-atl1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/p600x600/11209482_10154126339084062_7414939658765989962_n.png?oh=6646937da7405981c12fc17733fbab5d&oe=560F1B11
0 Replies
 
oralloy
 
  2  
Reply Tue 14 Jul, 2015 06:22 pm

The data signal from the Pluto probe just crossed Jupiter's orbit (presuming all went well).

http://twitter.com/NASAnewhorizons

We should receive the signal at 8:53 PM eastern time (about half an hour from now).

Anyone who isn't watching NASA TV live will probably be able to get the quickest confirmation of the signal from the above Twitter feed.
0 Replies
 
oralloy
 
  2  
Reply Tue 14 Jul, 2015 06:51 pm

This page monitoring the activity of NASA's satellite dishes should instantly show activity when data starts coming in:

http://eyes.nasa.gov/dsn/dsn.html

It appears that the dish watching for the Pluto data is Madrid #63.
0 Replies
 
oralloy
 
  2  
Reply Tue 14 Jul, 2015 06:56 pm

NASA TV shows a bunch of happy scientists applauding. It appears that we have a good signal.
0 Replies
 
edgarblythe
 
  3  
Reply Wed 15 Jul, 2015 01:56 pm
http://media.npr.org/assets/img/2015/07/15/pluto-closeup_custom-a348679e5169518de13d33dcaf92e990f6d54378-s1300-c85.jpg
0 Replies
 
edgarblythe
 
  2  
Reply Wed 15 Jul, 2015 01:57 pm
Moon
http://media.npr.org/assets/img/2015/07/15/nh-charon_custom-370f3a49c46c2f87f58265a8068b4ef8c69c23d3-s1300-c85.jpg
Frank Apisa
 
  1  
Reply Wed 15 Jul, 2015 02:18 pm
Wow!

Excellent pictures. Thank you for collecting them for us, Edgar.

To me it looks less cratered (MUCH less cratered) than the other planets where cratering shows up.

Is it my imagination?

Or if it isn't...anyone know why this is?
rosborne979
 
  1  
Reply Wed 15 Jul, 2015 02:58 pm
@edgarblythe,
It's amazing how small an orbital object (Charon) can be and still form a spherical shape due to gravity. I wonder if this indicates that these objects formed when they were mostly fluid of some form, or mostly such small grained material (rocks) that they appear effectively spherical.
oralloy
 
  1  
Reply Thu 16 Jul, 2015 01:49 am
@Frank Apisa,
Frank Apisa wrote:
To me it looks less cratered (MUCH less cratered) than the other planets where cratering shows up.
Is it my imagination?
Or if it isn't...anyone know why this is?

Not your imagination.

It is because Pluto and Charon have active geological processes, and their surfaces are young.

Those mountains on Pluto are young too, and are likely still growing. Currently they are about the size of of a typical mountain from the Rockey Mountains.

Interestingly, the bedrock (and mountains) are made of frozen water. At Pluto's temperatures, frozen water makes a good stand-in for solid granite.
0 Replies
 
Brandon9000
 
  1  
Reply Thu 16 Jul, 2015 03:09 am
@rosborne979,
rosborne979 wrote:
It's amazing how small an orbital object (Charon) can be and still form a spherical shape due to gravity. I wonder if this indicates that these objects formed when they were mostly fluid of some form, or mostly such small grained material (rocks) that they appear effectively spherical.


As far as I know, gas condensed to form the planets and moons, except for our Moon, which was formed by a collision.
Setanta
 
  1  
Reply Thu 16 Jul, 2015 05:47 pm
@Brandon9000,
You need to know a lot more. Start out by reading up on the planetisimals.
0 Replies
 
 

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