New Horizons Jupiter Encounter |
  |
New Horizons Jupiter Encounter |
 Jan 21 2007, 08:06 AM
Post
#46
|
|
 Director of Galilean Photography  Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93  |
I hope those Kodak moments come out well; I'm not sure how well the models show the edge of Jupiter's atmosphere. Seeing the refraction of the moons through the atmosphere will be pretty cool though!
Seeing the images starting to come in from this flyby has me missing Galileo...Jupiter, to me, is the most photogenic place in the solar system, with its dynamic weather and unique moons. I know we send probes for science, and to answer questions, but I feel that visiting beautiful places is always a worthwhile endeavor. -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
 |
 
|
| Guest_Analyst_* |
Jan 21 2007, 08:12 AM
Post
#47
|
|
Guests |
Thank you very much for the timeline, John.
Analyst |
|
|
|
| Guest_PhilCo126_* |
 Jan 21 2007, 05:54 PM
Post
#48
|
|
Guests |
How will the Jupiter flyby affect the speed of New Horizons?
Will it really become the fastest traveling spacecraft ever? 
|
|
|
|
|
Jan 21 2007, 07:08 PM
Post
#49
|
|
|
Junior Member Group: Members Posts: 86 Joined: 12-October 05 From: Beijing Member No.: 526 |
QUOTE (PhilCo126 @ Jan 22 2007, 01:54 AM)  quote in reply! removed No. The solar probe Helios 2 was the fastest travelling spacecraft ever, at about 69 km/s relative to the Sun. I do not think any outer solar system probes in near future could have a higher speed. |
|
|
|
|
Jan 21 2007, 08:13 PM
Post
#50
|
|
 Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
That's true but Helios remains in orbit around the Sun so despite having an exceptionally high sun relative velocity at perihelion it does not have enough oribital energy to leave the solar system. In that sense it is not as "fast" as NH which is on an escape trajectory (or will be once it gets that boost from Jupiter).
|
|
|
|
|
Jan 21 2007, 08:46 PM
Post
#51
|
|
 Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Exactly, if we're talking about highest speeds on equal terms, we should consider hyperbolic escape velocities.
-------------------- |
|
|
|
| Guest_Analyst_* |
Jan 21 2007, 09:13 PM
Post
#52
|
|
Guests |
And then Voyager 1 is and will remain the fastest.
|
|
|
|
|
Jan 22 2007, 09:48 AM
Post
#53
|
|
 Senior Member Group: Members Posts: 2918 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
Agree on escape trajectory, nevertheless, for the fun of it, what object was the fastest ever : could it be Jupiter's probe from Galileo ?
-------------------- |
|
|
|
| Guest_Analyst_* |
Jan 22 2007, 11:58 AM
Post
#54
|
|
Guests |
QUOTE (climber @ Jan 22 2007, 10:48 AM) What object was the fastest ever? Relative to what? Sun, Earth, Jupiter ...? |
|
|
|
|
Jan 22 2007, 12:24 PM
Post
#55
|
|
|
Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
QUOTE (Analyst @ Jan 22 2007, 12:58 PM) Relative to what? Sun, Earth, Jupiter ...? Galactic center? -------------------- |
|
|
|
|
Jan 22 2007, 12:57 PM
Post
#56
|
|
 Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (ugordan @ Jan 22 2007, 12:24 PM) Galactic center? Great Attractor? Seriously, though, velocity at departure from Earth might be one way of doing it - or even days in flight/distance from Earth (aha! which side of the orbit... ...oh, bother!). Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
|
|
|
|
|
Jan 22 2007, 01:06 PM
Post
#57
|
|
|
Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Bob, in that case it would be more fitting to talk about energy, not velocity, specifically Characteristic energy. A smaller payload can get propelled faster so energies are a better way to directly compare things. Talking about speed is just a way to invoke that "oooh" factor in laymen, nothing else.
It's All Relative ™, anyway... -------------------- |
|
|
|
|
Jan 22 2007, 01:22 PM
Post
#58
|
|
|
Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (ugordan @ Jan 22 2007, 01:06 PM) Bob, in that case it would be more fitting to talk about energy, not velocity, specifically Characteristic energy. A smaller payload can get propelled faster so energies are a better way to directly compare things. Talking about speed is just a way to invoke that "oooh" factor in laymen, nothing else. It's All Relative ™, anyway... Yes, I'd been idly musing in that direction... ...really, we'd need a new unit of energy, too - something comparable to area (the Wales) or mass (the US Naval Destroyer). Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
|
|
|
|
|
Jan 22 2007, 02:01 PM
Post
#59
|
|
|
Senior Member Group: Members Posts: 2918 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
QUOTE (Analyst @ Jan 22 2007, 12:58 PM) Relative to what? Sun, Earth, Jupiter ...? Well, I've got the point of "relative to what..." but, my dear Analyst, on the post before mine you said "And then Voyager 1 is and will remain the fastest." So, for man made objects, what about gain of acceleration since launch? Does it make sense to you? Beware :  doesn't count 
-------------------- |
|
|
|
|
Jan 22 2007, 02:35 PM
Post
#60
|
|
 Member Group: Members Posts: 213 Joined: 21-January 07 From: Wigan, England Member No.: 1638 |
I've uploaded an audio recording of the press briefing for anyone who missed it:
http://www.cafesociety.uk.com/other/New-Horizons-Jupiter.mp3 (right-click on the link and select "Save Target As..." to download. Perhaps one of these days NASA will create a searchable archive of NASA TV briefings (well I can dream...) :--) |
|
|
|
|
|
Lo-Fi Version | Time is now: 20th April 2024 - 05:25 AM |
|
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |
|
