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  NASA's Voyager probes: Questions, comments

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Author Topic:   NASA's Voyager probes: Questions, comments
Robert Pearlman
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From: Houston, TX
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posted 07-06-2012 03:16 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
NASA's Voyager probes: questions and comments

This thread is intended for comments and questions regarding the updates under: NASA's Voyager probes: milestones and updates.

Launched in 1977, Voyager 1 and Voyager 2 are operating as part of the Voyager Interstellar Mission, an extended mission to explore the solar system outside the neighborhood of the outer planets. NASA's Voyagers are the two most distant active representatives of humanity and its desire to explore.

Rick Boos
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From: Celina,Ohio U.S.A.
Registered: Feb 2000

posted 07-06-2012 03:17 PM     Click Here to See the Profile for Rick Boos   Click Here to Email Rick Boos     Edit/Delete Message   Reply w/Quote
Isn't it amazing that the Voyager spacecrafts have traveled that many years and miles without colliding into something major?

Blackarrow
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From: Belfast, United Kingdom
Registered: Feb 2002

posted 07-07-2012 09:32 AM     Click Here to See the Profile for Blackarrow     Edit/Delete Message   Reply w/Quote
Not really. Space is huge. Objects big enough to destroy or disable a space probe are very rare, even in the Asteroid Belt (as evidenced by the fact that no spacecraft has been destroyed or disabled while passing through it).

Philip
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From: Brussels, Belgium
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posted 12-22-2012 10:47 AM     Click Here to See the Profile for Philip   Click Here to Email Philip     Edit/Delete Message   Reply w/Quote
This month the Voyager project is exactly 40 years old!

In July 1972, NASA accepted the proposal and by mid December 1972, they signed the project agreement, appointed Harris Bud Schurmeier as project manager and assembled a science steering group headed by professor Edward Stone of the California Institute of Technology (Caltech).

Robert Pearlman
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From: Houston, TX
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posted 03-21-2013 05:21 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Yesterday, the American Geophysical Union (AGU) put out a press release titled:
Voyager 1 has Left the Solar System, Sudden Changes in Cosmic Rays Indicate
This, understandably, resulted in a flurry of news articles reporting the milestone.

Unfortunately, it was false.

NASA's Voyager team soon issued its own statement, disputing the claim, pointing to their own announcement in December that Voyager had entered a new region of the solar system, called "the magnetic highway," where energetic particles change dramatically.

The AGU then updated their release, with a new headline:

Voyager 1 has entered a new region of space, sudden changes in cosmic rays indicate
...but the damage was already done; so don't be surprised if "Voyager has left the building solar system" articles float around the internet for years to come...

moorouge
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posted 05-16-2013 02:37 PM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
All this begs the question - how does one define the solar system?

Headshot
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From: Streamwood, IL USA
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posted 09-12-2013 05:46 PM     Click Here to See the Profile for Headshot   Click Here to Email Headshot     Edit/Delete Message   Reply w/Quote
NASA's Voyager 1 spacecraft officially is the first human-made object to venture into interstellar space.
I believe that Pioneers 10 and 11 were the first artificial objects to leave the solar system. They were both to have crossed Pluto's orbit around 1990, but were heading in opposite directions. We do not know exactly when that happened because we had lost radio contacts with them.

Voyager 1 was the first object to leave the solar system with which we still had radio contact.

Robert Pearlman
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Posts: 28579
From: Houston, TX
Registered: Nov 1999

posted 09-12-2013 05:52 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
As of today, Pioneer 10 is 109.224 AU from the Sun, Pioneer 11 is 88.780 AU, Voyager 2 is 102.690 AU and Voyager 1 is 125.405 AU.

Thus Voyager 1 is further out than either Pioneer and crossed into interstellar space first.

Headshot
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From: Streamwood, IL USA
Registered: Feb 2012

posted 09-12-2013 05:55 PM     Click Here to See the Profile for Headshot   Click Here to Email Headshot     Edit/Delete Message   Reply w/Quote
Thanks for the correction. That's a really cool site too.

Blackarrow
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From: Belfast, United Kingdom
Registered: Feb 2002

posted 09-12-2013 07:58 PM     Click Here to See the Profile for Blackarrow     Edit/Delete Message   Reply w/Quote
Voyager 1: humanity's most distant reach.

lspooz
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From: Greensboro NC USA
Registered: Aug 2012

posted 09-12-2013 08:36 PM     Click Here to See the Profile for lspooz   Click Here to Email lspooz     Edit/Delete Message   Reply w/Quote
NASA's Voyager has great info on the data analysis leading to the announcement, including an audio link demonstrating the 'pitch change' in vibrations measured in interstellar plasma versus solar plasma.

Philip
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From: Brussels, Belgium
Registered: Jan 2001

posted 11-03-2013 12:10 PM     Click Here to See the Profile for Philip   Click Here to Email Philip     Edit/Delete Message   Reply w/Quote
Just wanted to point out this excellent commercial for Klara's Top 100 for classical music.

cspg
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From: Geneva, Switzerland
Registered: May 2006

posted 01-16-2014 02:31 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
I like the idea that 25 years later, we still get some interesting pictures. See Astronomy Picture of the Day (APOD) for 1/16/14.
A mere 148 kilometers across, diminutive Despina was discovered in 1989, in images from the Voyager 2 spacecraft taken during its encounter with the solar system's most distant gas giant planet. But looking through the Voyager 2 data 20 years later, amateur image processor and philosophy professor Ted Stryk discovered something no one had recognized before -- images that show the shadow of Despina in transit across Neptune's blue cloud tops.

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