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  #121 (permalink)  
Old 21-June-2005, 12:12 AM
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Yep. It might be somewhat less (somewhere between 2-3 solar masses) but 3 is the high end estimate. Your turn.
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  #122 (permalink)  
Old 21-June-2005, 12:20 AM
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Quote:
Originally Posted by Van Rijn
Yep. It might be somewhat less (somewhere between 2-3 solar masses) but 3 is the high end estimate. Your turn.
OK, Which famous 'astronomer' died the year that Sir Isaac Newton was born?

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  #123 (permalink)  
Old 21-June-2005, 02:02 AM
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Galiao?
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  #124 (permalink)  
Old 21-June-2005, 02:06 AM
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Originally Posted by mickal555
Galiao?
Crude spelling, but you're right.

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  #125 (permalink)  
Old 21-June-2005, 02:15 AM
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Ok...

What is the brightest star in canas minor called?
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  #126 (permalink)  
Old 21-June-2005, 02:25 AM
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Quote:
Originally Posted by mickal555
Ok...

What is the brightest star in canas minor called?
Procyon? It's in one of the minor's. :P

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  #127 (permalink)  
Old 21-June-2005, 02:29 AM
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Yep

your turn
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  #128 (permalink)  
Old 21-June-2005, 02:33 AM
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Originally Posted by mickal555
Yep

your turn
Which planet has the highest wind speeds?

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  #129 (permalink)  
Old 21-June-2005, 02:43 AM
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neptune
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  #130 (permalink)  
Old 21-June-2005, 03:03 AM
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Originally Posted by mickal555
neptune
Yup. Can we get some more action (participation) in this post? :P

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  #131 (permalink)  
Old 21-June-2005, 03:17 AM
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It's probobly so long it scares people off....

I"ll ask an easy one- don't answer for a bit to see if anyone reply's:

What is the brightest star? :P :wink:
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  #132 (permalink)  
Old 21-June-2005, 08:43 AM
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The Sun!!

Phew, finally I'm around when there's a question I know the answer to.

Now if only I could find a good new question...
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  #133 (permalink)  
Old 21-June-2005, 09:46 AM
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Originally Posted by Fram
The Sun!!

Phew, finally I'm around when there's a question I know the answer to.

Now if only I could find a good new question...
Good job! Any question is fine....don't leave us hanging here mate. :P

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  #134 (permalink)  
Old 21-June-2005, 11:08 AM
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Who got (injustly) infamous for saying there were canals on Mars?
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  #135 (permalink)  
Old 21-June-2005, 11:12 AM
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Quote:
Originally Posted by Van Rijn
Quote:
Originally Posted by Melusine
I'm rushing here now, but putting aside my "vague about 4x times..", (hey, it was late!)it says in my book that Sirius B has a diameter of 19,000 miles. I just looked up Google http://www.google.com/search?hl=en&a...ius+b+diameter, and my book isn't the only one who says that. I'm confused. They agree with you here http://www.siriusresearchgroup.com/a...igitaria.shtml, but I'm confused about the disparity in the diameter, and secondly, if my book is unreliable. Has it shrunk? Lol. I know I'm not reading 19,000 miles incorrectly--it's right in it's own special blurb. ???

I like that "sirius" means "scorching, searing."
I'm curious how old the book is? There were different estimates in the past and it is hard to get good direct measurements on white dwarfs. I remembered it being about the size of earth and it seems that has been confirmed:

http://www.universetoday.com/am/publ...rf_theory.html
To interrupt the game flow here, the book is 1997. But, I see what they're doing in one sentence, and I don't like it. They're saying that Sirius B's diameter is 19,000 miles (30,500 km). But others say www.solstation.com/stars/sirius2.htm+sirius+b+diameter&amp;hl=en]Sirus B's diameter is 7,300 miles (11,700 km)[/url]. So, what are they using as Earth's diameter? If Earth's diameter is 12,756 km, than how can they say it is less than 3x that of Earth? To me it's a garbled sentence and should have just left out one or the other and said:
Quote:
In fact, Sirius B's diameter of about 11,700 km (about 7,300 miles) is about 92 percent of Earth's. Its mass and diameter are consistent with the theoretical size for a carbon-core white dwarf, one that may have evolved from a six to seven Solar-mass, B5 main-sequence star. While tiny compared to main sequence stars, white dwarf stars are actually intensely hot, but without the internal heat of fusion to keep them burning, they gradually cool and fade away. (from above link)
That's just a confusing blurb, I went here and here trying to figure out why they might have come up with 19,000 miles.

BTW, I do use this.

:P Anyway, Van Rijn, since you're paying attention, which I really appreciate, I'm giving you the...



Since Fram is AWOL, I'll ask an easy question that I know by heart (aka remedial level, :wink: ):

*What binary/double star can be seen with binoculars, and with a small telescope can be seen to be a double star within a double star, in a well-known constellation that I can see in light pollution? Name the three.
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  #136 (permalink)  
Old 21-June-2005, 11:16 AM
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Oops, sorry Fram! I just said I thought you went AWOL, and you posted as I was editing!

Fram's question:

Who got (injustly) infamous for saying there were canals on Mars?

(darn 2 minute wait)
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  #137 (permalink)  
Old 21-June-2005, 11:22 AM
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Quote:
Originally Posted by Melusine
Oops, sorry Fram! I just said I thought you went AWOL, and you posted as I was editing!

Fram's question:

Who got (injustly) infamous for saying there were canals on Mars?

(darn 2 minute wait)
Giovanni Schiaparelli? I think it was some Italian dude. :P

Thanks for the extra info about Sirius B melusine.

Quote:
*What binary/double star can be seen with binoculars, and with a small telescope can be seen to be a double star within a double star, in a well-known constellation that I can see in light pollution? Name the three.
Dunno if I should answer this yet, but I have a feeling I might know the answer....

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  #138 (permalink)  
Old 21-June-2005, 11:24 AM
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Giovanni Schiaparelli? I think it was some Italian dude.

Go ahead and answer CC; and it's funny because I was going to say "Italian dude", too, and I know that's right.
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  #139 (permalink)  
Old 21-June-2005, 11:45 AM
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