Space based enquiry- help please
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Space based enquiry- help please
Learned contributors,
I’m not sure if this is the appropriate place to post this.
No doubt someone will correct me if required!
I have found references to a total 5 NASA deep space probes that have achieved ‘solar escape velocity’ I can identify four of them Pioneer 10, Pioneer 11, Voyager1 and Voyager 2. I can not identify the fifth one. Can any one help?
Your time and trouble greatly appreciated.
David
I’m not sure if this is the appropriate place to post this.
No doubt someone will correct me if required!
I have found references to a total 5 NASA deep space probes that have achieved ‘solar escape velocity’ I can identify four of them Pioneer 10, Pioneer 11, Voyager1 and Voyager 2. I can not identify the fifth one. Can any one help?
Your time and trouble greatly appreciated.
David
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"Solar escape velocity" is a qualification term for a speed, not a position.
It just says you are going fast enough to escape the gravity well of the solar system, so you can achieve that while still inside it. Like New Horizons.
It just says you are going fast enough to escape the gravity well of the solar system, so you can achieve that while still inside it. Like New Horizons.
Yep, those five probes and the 3rd propulsion stages of 4 out of the 5 (Pioneer 11's wasn't going fast enough but the probe gained more speed during a planetary flyby) There is also apparently a set of "de-spin weights" that were used to slow the rate New Horizons was spinning at which are also at escape velocity.
Unless we launch any more those 10 objects will almost certainly out last us, the Earth, the Sun and the Solar System and will eventually be the only physical evidence that the human race ever existed.
Unless we launch any more those 10 objects will almost certainly out last us, the Earth, the Sun and the Solar System and will eventually be the only physical evidence that the human race ever existed.
Thread Starter
Join Date: Oct 2005
Location: Stockport MAN/EGCC
Age: 70
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Yep, those five probes and the 3rd propulsion stages of 4 out of the 5 (Pioneer 11's wasn't going fast enough but the probe gained more speed during a planetary flyby) There is also apparently a set of "de-spin weights" that were used to slow the rate New Horizons was spinning at which are also at escape velocity.
Unless we launch any more those 10 objects will almost certainly out last us, the Earth, the Sun and the Solar System and will eventually be the only physical evidence that the human race ever existed.
Unless we launch any more those 10 objects will almost certainly out last us, the Earth, the Sun and the Solar System and will eventually be the only physical evidence that the human race ever existed.
