Unanswered phenomenon in earth orbit

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Discussion Overview

The discussion revolves around various observational anomalies encountered by scientists in Earth orbit, with a specific mention of the Pioneer anomaly and requests for additional examples or resources. Participants explore the characteristics and implications of these anomalies.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • One participant identifies the Pioneer anomaly as an example of an observational anomaly in Earth orbit and seeks others.
  • Another participant questions the relevance of the Pioneer anomaly, noting that the probes are significantly farther than Earth orbit.
  • Clarifications are made regarding the analogy used to describe the distance of the Pioneer probes compared to Earth orbit.
  • A later post asserts that the Pioneer anomaly was first detected while the spacecraft was in Earth orbit, claiming it gained more kinetic energy than expected, but this is met with skepticism and requests for references.
  • Participants discuss the Flyby anomaly as another example of an unexplained increase in energy occurring in Earth orbit.
  • One participant criticizes the broad nature of the original question and suggests a more focused approach for future discussions.

Areas of Agreement / Disagreement

There is no consensus on the examples of anomalies in Earth orbit, with some participants agreeing on the existence of the Flyby anomaly while others dispute the characterization of the Pioneer anomaly. The discussion remains unresolved regarding the specifics of these anomalies.

Contextual Notes

Participants express uncertainty about the definitions and implications of the anomalies discussed, and there are references to the need for peer-reviewed sources rather than Wikipedia links.

adastra
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What are the phenomenon so far encountered by scientists, that happens in Earth orbit? I mean observational anomaly

One of such phenomenon is pioneer anomaly.

what are the others?

Anyone please add to the list, or refer me to some reading resource
 
Last edited:
Astronomy news on Phys.org
that i already tried
 
adastra said:
What are the phenomenon so far encountered by scientists, that happens in Earth orbit? I mean observational anomaly

One of such phenomenon is pioneer anomaly.

what are the others?

Anyone please add to the list, or refer me to some reading resource

You are painting with an extremely broad brush: The pioneer probes are farther than Earth orbit by 6 or 7 orders of magnitude - (i.e. if each individual bristle is an Earth orbit, then your brush is about 5 kilometers wide)
 
DaveC426913 said:
You are painting with an extremely broad brush: The pioneer probes are farther than Earth orbit by 6 or 7 orders of magnitude - (i.e. if each individual bristle is an Earth orbit, then your brush is about 5 kilometers wide)

I don't get this brush thing... if each bristle is 150 mln km how is it possible for the brush to be 108 times thinner?
 
Borek said:
I don't get this brush thing... if each bristle is 150 mln km how is it possible for the brush to be 108 times thinner?
I think Dave meant to say if you reduce an Earth orbit to the size of a bristle, the brush with which the OP is painting is about 5 kilometers wide.
 
OK, makes sense this way.
 
I actually meant, pioneer anomaly is an anomaly detected first while that spacecraft was in Earth orbit. it got more kinetic energy, than it was supposed to.

This anomaly is yet unexplained.

I asked for similar anomaly and observational problems.

thanx
 
adastra said:
I actually meant, pioneer anomaly is an anomaly detected first while that spacecraft was in Earth orbit. it got more kinetic energy, than it was supposed to.
I am highly dubious of this. Do you have a reference for iths?
 
  • #11
And where in there does it say that the craft was affected while still in Earth orbit??

Please check your facts.
 
  • #12
Sorry, I mixed this with pioneer anomaly:

http://en.wikipedia.org/wiki/Flyby_anomaly

This is in Earth orbit, and effect is same (though internal mechanism might be different) - unexplained increase of energy.
 
  • #13
The topic of this thread is ridiculously broad. adastra, I suggest that you take some time to think about the questions you wish to ask, and formulate them in some detail. I'm closing this thread. If you wish to ask a specific question, then please start a new thread. Also, note that wikipedia is not acceptable as a reference here at PF: you must link to a published, peer-reviewed paper.
 

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