connies4ever
Topic Author
Posts: 3393
Joined: Sat Feb 25, 2006 10:54 pm

Juno Probe Heads For Jupiter

Fri Aug 05, 2011 7:39 pm

Juno launched atop an Atlas 5 booster this morning from Cape Canaveral:

http://www.bbc.co.uk/news/science-environment-14412988

Every wish that Juno gets where it is intended to go and is a smashing success. An interesting factoid about Juno is that it is the 1st probe to go past Mars that is solar powered. All previous deep space missions have been powered by RTGs, primarily using Pu-238.
Nostalgia isn't what it used to be.
 
comorin
Posts: 3857
Joined: Sun May 29, 2005 5:52 am

RE: Juno Probe Heads For Jupiter

Fri Aug 05, 2011 11:54 pm

Thank you for the link to this historic event. I suspect the science, and the images that comes out of this will be amazing! Hopefully it won't bump into any monoliths along the way.
 
GDB
Posts: 12653
Joined: Wed May 23, 2001 6:25 pm

RE: Juno Probe Heads For Jupiter

Sat Aug 06, 2011 7:27 am

Quoting comorin (Reply 1):
Hopefully it won't bump into any monoliths along the way.

Very good! Though in the book the monolith is on Saturn's Moon Iapetus (one half much brighter than the other, which Cassini now has a less extra-terrestrial explanation for).
In fact, Saturn sequences were shot for 2001 but Kubrick was under time, film length and cost pressures so the use of Jupiter's gravity to slingshot Discovery towards Saturn (yet another very prescient forecast by Arthur C Clarke well before the idea was proposed for unmanned probes), was modified and the Saturn sequences were later used by the same cinematographer for the film Silent Running .
 
connies4ever
Topic Author
Posts: 3393
Joined: Sat Feb 25, 2006 10:54 pm

RE: Juno Probe Heads For Jupiter

Sat Aug 06, 2011 1:02 pm

Quoting GDB (Reply 2):
In fact, Saturn sequences were shot for 2001 but Kubrick was under time, film length and cost pressures so the use of Jupiter's gravity to slingshot Discovery towards Saturn (yet another very prescient forecast by Arthur C Clarke well before the idea was proposed for unmanned probes), was modified and the Saturn sequences were later used by the same cinematographer for the film Silent Running .

I did not know that, and I had always wondered why it was Saturn in the book and Jupiter in the movie.

Silent Running was a pretty worthy film in its' own right.
Nostalgia isn't what it used to be.
 
comorin
Posts: 3857
Joined: Sun May 29, 2005 5:52 am

RE: Juno Probe Heads For Jupiter

Sat Aug 06, 2011 2:14 pm

2001 - simply brilliant, blew me away when I first saw it. Suggest "The Making of 2001" for fascinating details. All hail Kubrick, Clarke and Trumbull!

I wonder what will happen to the space program as funds get scarce. The thing about voyages of discovery are that you never know what you will find, and we need to keep pushing frontiers.

btw when will Juno start beaming back pictures?
 
connies4ever
Topic Author
Posts: 3393
Joined: Sat Feb 25, 2006 10:54 pm

RE: Juno Probe Heads For Jupiter

Sat Aug 06, 2011 4:01 pm

Quoting comorin (Reply 4):
I wonder what will happen to the space program as funds get scarce. The thing about voyages of discovery are that you never know what you will find, and we need to keep pushing frontiers.

I think you'll see more collaborative space probes like ExoMars. And much less human space flight. Except for China and likely India.

btw when will Juno start beaming back pictures?

Not for quite a while except perhaps for a few calibration photos as it whizzes by Earth on a slingshot. Actually, there'll be nothing to photograph, most likely, until it gets relatively close to Jupiter.
Nostalgia isn't what it used to be.
 
User avatar
Stitch
Posts: 23096
Joined: Wed Jul 06, 2005 4:26 am

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 1:30 am

Quoting connies4ever (Thread starter):
An interesting factoid about Juno is that it is the 1st probe to go past Mars that is solar powered. All previous deep space missions have been powered by RTGs, primarily using Pu-238.

While this is not the reason for Juno using solar power instead of RTGs, evidently treaty issues have impacted the ability of the US to manufacture the Pu-238 needed for RTGs, even though Pu-238 is ineffective for use in nuclear weapons.



Quoting GDB (Reply 2):
In fact, Saturn sequences were shot for 2001 but Kubrick was under time, film length and cost pressures so the use of Jupiter's gravity to slingshot Discovery towards Saturn (yet another very prescient forecast by Arthur C Clarke well before the idea was proposed for unmanned probes)...

Michael Minovitch developed the theory in 1961, though it was not used in practice until Mariner 10 in 1973. That being said, Clarke's use of it in 1968 for 2001 would be the first fictional use of such a procedure.
 
comorin
Posts: 3857
Joined: Sun May 29, 2005 5:52 am

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 2:15 am

OK, I give up...what is an RTG?
 
GPHOTO
Posts: 799
Joined: Sun Aug 01, 2004 11:44 pm

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 3:50 am

Erm, is this thing on?
 
comorin
Posts: 3857
Joined: Sun May 29, 2005 5:52 am

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 2:20 pm

Quoting GPHOTO (Reply 8):
http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator

Best regards,

Jim

Thank you for the link, much appreciated!
 
GDB
Posts: 12653
Joined: Wed May 23, 2001 6:25 pm

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 6:13 pm

Quoting Stitch (Reply 6):
Michael Minovitch developed the theory in 1961, though it was not used in practice until Mariner 10 in 1973. That being said, Clarke's use of it in 1968 for 2001 would be the first fictional use of such a procedure.

True, though the main draft of the novel 2001 was done by 1964 I think.
Of course the short story it came from went back much further, though that was confined to the Moon.

Clarke later said when writing the book, he never thought that the first exploration of Jupiter would be in the next decade rather than the next century, albeit unmanned.
(A little aside in the book, during Commander Bowman's video cast back to Earth for the public, in the wake of the AE35 main antenna controller 'failure' reported by HAL, was that this was a common trouble with the deep space probes of the last century. They often reached other planets but could not send back information because their antennas couldn't locate Earth. )

(The nearest we've come to that so far was with another Jupiter probe, Galileo , with it's troublesome antenna deployment).
 
B17GUNNER24
Posts: 24
Joined: Wed Apr 20, 2011 8:24 pm

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 6:46 pm

i love the lego models the sent into space in the probe

good luck juno
here are the models they sent http://www.nasa.gov/mission_pages/juno/news/lego20110803.html
The sky is a open space for the raw power of jets to roam free
 
comorin
Posts: 3857
Joined: Sun May 29, 2005 5:52 am

RE: Juno Probe Heads For Jupiter

Sun Aug 07, 2011 7:12 pm

Quoting GDB (Reply 10):
True, though the main draft of the novel 2001 was done by 1964 I think.
Of course the short story it came from went back much further, though that was confined to the Moon.

Which us true believers know to be The Sentinel from Expedition to Earth and Childhood's End.

Let's see what this Jupiter Mission brings us...

Who is online

Users browsing this forum: No registered users and 6 guests