19
   

Those Dark Spots on Pluto

 
 
Frank Apisa
 
  2  
Reply Tue 21 Jul, 2015 03:36 am
Obviously, Max, Setanta will never acknowledge error...and instead will go for the insults.

Hey...at least he is consistent. He always goes that way.

Gotta give him that...right!
jespah
 
  3  
Reply Tue 21 Jul, 2015 05:56 am
I'm waiting for an artist's rendering of what Charon looks like from the surface of Pluto.
maxdancona
 
  4  
Reply Tue 21 Jul, 2015 07:01 am
@Frank Apisa,
It would be nice to be able to have a reasonable discussion about the math of orbits without personal insults. The math behind orbits is interesting. However, I don't want to respond if the personal insults are going to be more important than a factual discussion on the science.

The Pluto-Charon system is mutually tidal locked. The Plutonian day is equal to the orbit of Charon. (The Earth Moon system is moving very slowly toward being mutually tidally locked... but I don't believe we will ever get there before the Earth is swallowed up by an expanding Sun).
Frank Apisa
 
  2  
Reply Tue 21 Jul, 2015 09:05 am
@maxdancona,
I agree, Max.

All I wanted to mention was what I said:


Quote:
Actually...the Earth and its moon dance around a common center of gravity. The center in our case lies inside the Earth.

And the Earth and Sun dance around a common center of gravity...as does every celestial body.

That one seems extreme...due to the huge size of Charon compared with Pluto.


Not sure why that comment got such a negative reaction from Setanta.
maxdancona
 
  3  
Reply Tue 21 Jul, 2015 09:07 am
@jespah,

Here you go Jespah.

http://i1-news.softpedia-static.com/images/news2/Debates-on-Pluto-039-s-Classification-Rage-On-2.jpg
maxdancona
 
  2  
Reply Tue 21 Jul, 2015 09:14 am
@Frank Apisa,
The point you are making is an interesting one, and it is the primary way we have to find exoplanets (planets orbiting other stars). It is usually impossible for us to see the planets directly, but we can view the sun and see it orbit (very slightly) the center of mass of the star-planet system in response to the planet's mass.
Frank Apisa
 
  1  
Reply Tue 21 Jul, 2015 09:27 am
@maxdancona,
Yup!
0 Replies
 
jespah
 
  1  
Reply Tue 21 Jul, 2015 09:39 am
@maxdancona,
Oh, thanks. Smile
0 Replies
 
Setanta
 
  1  
Reply Tue 21 Jul, 2015 01:01 pm
@jespah,
If we wait around for another ten or twelve years, maybe they'll have landed a rover on Pluto. Not that i'm likely to be around that long . . .
jespah
 
  1  
Reply Tue 21 Jul, 2015 01:53 pm
@Setanta,
That would be neat, eh (the landing, of course). By then we'll be dream-tweeting our impressions, and everyone will speak #hashtag.
roger
 
  2  
Reply Tue 21 Jul, 2015 02:59 pm
@jespah,
Shall we work up a meetup there. So different from the same old, same old Boston stuff.
neologist
 
  2  
Reply Tue 21 Jul, 2015 03:02 pm
@jespah,
jespah wrote:
That would be neat, eh (the landing, of course). By then we'll be dream-tweeting our impressions, and everyone will speak #hashtag.
Punctuated by emoji. ♚
0 Replies
 
georgeob1
 
  5  
Reply Tue 21 Jul, 2015 03:10 pm
@Setanta,
Setanta wrote:

Ah yes, Mr. Science, who can drive from Boston to Rochester in five hours, a distance he describes as 396 miles, with two stops for food and fuel, no less! If your math, or your honesty, are not better than that, your alleged credentials don't impress me.

Frank, one of the most simple-minded bullies here, was attempting to argue from analogy (look that up, if you have to). What he described, i.e., the relationship of the Moon to the Earth, and that of the Earth to the Sun, are not analogous. The moon being tidally locked is significant as he was attempting to argue, in his feeble-minded and hectoring manner, about the relationship of Charon to Pluto. See Oralloy's subsequent remarks, including sources, on the relationship of those two bodies to one another.


Nonsense. What Frank wrote was correct as far as it went, and he made no claim that there were no other factors involved. . Specifically he did not address the tidal issue you noted at all. Moreover it was tangential to his comment, which focused only on the proximity of the two bodies.

If you are looking for an error in what someone posts here (or merely an omission, whether meaningful or merely outside the point or observation being made ) you can usually find one - as you did in this case.

The sneering was undeserved and unneccessary.
mesquite
 
  1  
Reply Tue 21 Jul, 2015 03:57 pm
0 Replies
 
Setanta
 
  1  
Reply Tue 21 Jul, 2015 04:17 pm
@georgeob1,
You're just as bad as Frank, and Neo and Max . . . you're just looking for a fight, hoping you can get one out of me. Why don't you address the topic of the thread?
maxdancona
 
  2  
Reply Tue 21 Jul, 2015 04:23 pm
@Setanta,
lol
0 Replies
 
Frank Apisa
 
  1  
Reply Tue 21 Jul, 2015 04:30 pm
@georgeob1,
Thank you, George.

As I said earlier, Setanta will never acknowledge error...and he was totally in error in his response to what I said.

Instead will go for the insults. He is consistent; he always goes that way.


Frank Apisa
 
  1  
Reply Tue 21 Jul, 2015 04:31 pm
@georgeob1,
Thank you, George.

As I said earlier, Setanta will never acknowledge error...and he was totally wrong in his response to what I said.

Instead will go for the insults. He is consistent; he always goes that way.


0 Replies
 
jespah
 
  1  
Reply Tue 21 Jul, 2015 04:34 pm
@roger,
Bring a sweater.
Setanta
 
  1  
Reply Tue 21 Jul, 2015 04:39 pm
@jespah,
Maybe some mittens, too . . .
0 Replies
 
 

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