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Betelgeuse 'not likely to explode in 2012'
News.com.australia ^
| 01-22-201
| Staff
Posted on 01/22/2011 8:58:26 PM PST by Red Badger
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To: Red Badger
Don’t forget... we’re looking back in time. The light we see came to us thousands or millions of years ago. We don’t see the universe as it existed now but at a particular point in time long before man arrived on the earth.
41
posted on
01/22/2011 10:03:07 PM PST
by
goldstategop
(In Memory Of A Dearly Beloved Friend Who Lives In My Heart Forever)
To: coloradan
To: ErnstStavroBlofeld
When satellites are used the calculations are MORE precise.......
43
posted on
01/22/2011 10:03:56 PM PST
by
Red Badger
(Whenever these vermin call you an 'idiot', you can be sure that you are doing something right.)
To: goldstategop
Betegeuse is approx 640 light years away......
44
posted on
01/22/2011 10:05:34 PM PST
by
Red Badger
(Whenever these vermin call you an 'idiot', you can be sure that you are doing something right.)
To: Red Badger
Atomic clocks are among the most accurate time and frequency standards known, to control the frequency of television broadcasts, and in global navigation satellite systems such as GPS.
To: ErnstStavroBlofeld
I know what parallax is and what error bars, generally are. What I meant was, what are the error bars for the measurement of this star’s parallax (and therefore distance)? I have since read Wikipedia on it, and now know some candidate answers.
46
posted on
01/22/2011 10:08:56 PM PST
by
coloradan
(The US has become a banana republic, except without the bananas - or the republic.)
To: Red Badger
The US Naval Observatory(the U.S. official timekeeper)and NIST use atomic clocks
To: Mr_Moonlight; Salamander
"Please .. don't be so coy."
OK. I won't be coy. I'll just be
48
posted on
01/22/2011 10:12:13 PM PST
by
shibumi
(I am the Astro-Creep, demolition style an American Freak!)
To: Red Badger
Ford Prefect will not be amused if it happens...
:-P
49
posted on
01/22/2011 10:12:20 PM PST
by
gogogodzilla
(Live free or die!)
To: ErnstStavroBlofeld
I was a Calibration Lab manager for 20 years......
50
posted on
01/22/2011 10:14:44 PM PST
by
Red Badger
(Whenever these vermin call you an 'idiot', you can be sure that you are doing something right.)
To: Salamander
You stare at the graphic blankly for a moment and then a pleasant belly roll laugh erupts from deep in the psyche!
51
posted on
01/22/2011 10:15:43 PM PST
by
higgmeister
( In the Shadow of The Big Chicken!)
To: ErnstStavroBlofeld
Interesting take on the radio emissions. I'll have to think about that.
I did a quick check on some of the astro sw I have. A couple have
numbers less than 430 ly, however, the online Betelgeuse ref in
Starry Night goes to Wikipedia (@ 643 ± 146 ly) and sources an
April, 2008 paper.
To: Red Badger
Cool. You must have some stories
To: Mr_Moonlight; Salamander
"Even Salamander got the joke with "The Larch" ref ... /LOL"
Even Salamander?
Well, in that case it must have been boot-to-the-head obvious.
54
posted on
01/22/2011 10:16:26 PM PST
by
shibumi
(I am the Astro-Creep, demolition style an American Freak!)
To: Red Badger
Dang it! I had planned everything around this star exploding. Now I must rearrange my entire schedule.
55
posted on
01/22/2011 10:18:13 PM PST
by
Grizzled Bear
("Does not play well with others.")
To: coloradan
I finally found it in a astronomy book I had.Parallax measurements (from the ground) are only really accurate up to about 100 parsecs (about 300 ly). Distances further than that have large error bars.Hipparcos (satellite that measured parallaxes) extended this limit
To: TBall
I think what they're getting at is that for the past generation or so, the
star has been wavering in its output, on a downward slope, and
getting dimmer in the process.
Since gravity sucks, as they say, and Betelgeuse appears to be running
out of "Red Giant fuel", all that mass that it has been keeping at
bay is going to start to fall back on the core...
...hence, the SN candidacy.
To: Mr_Moonlight
Monty Python, you say?
Nope.
Never heard of ‘im.
Obviously some kind of serpent tamer or something.
Sal “Killer Blancmange” Amander
58
posted on
01/22/2011 11:20:15 PM PST
by
Salamander
(Can't sleep....the clowns will eat me.)
To: shibumi
“Even Salamander got the joke”
Yeah...even that stupid little amphibian got a clue.
59
posted on
01/22/2011 11:21:57 PM PST
by
Salamander
(Can't sleep....the clowns will eat me.)
To: shibumi
Duh.
I don’t get it, Shibumi.
Duh-uh.
/village idiot
60
posted on
01/22/2011 11:24:28 PM PST
by
Salamander
(Can't sleep....the clowns will eat me.)
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