Comments on: Fireworks and pinwheels http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/ I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy blog. Mon, 23 Nov 2009 10:58:18 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: Irishman http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11441 Irishman Mon, 13 Feb 2006 19:47:00 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11441 BB Said: >BAD ASTRONOMY! >This star blew up 100 million years ago, not in 2002 A legitimate quibble buried in a matter of perspective. When discussing astronomical events, do we describe the the timeframes based upon when we see them occur, or when the signal was sent? From our perspective, the star blew up in 2002 - that is when we saw it occur. Okay, the light of the explosion didn't reach us until 2002, but occurred some long time before. Drat! BB Said:
>BAD ASTRONOMY!
>This star blew up 100 million years ago, not in 2002

A legitimate quibble buried in a matter of perspective. When discussing astronomical events, do we describe the the timeframes based upon when we see them occur, or when the signal was sent? From our perspective, the star blew up in 2002 – that is when we saw it occur. Okay, the light of the explosion didn’t reach us until 2002, but occurred some long time before. Drat!

]]> By: Maurizio Morabito http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11442 Maurizio Morabito Sun, 12 Feb 2006 10:10:39 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11442 25 octillions of a megaton, i.e. 2.5E40 grams of TNT...comes out as a cube of explosive with a side of 250 million kilometers, right? 25 octillions of a megaton, i.e. 2.5E40 grams of TNT…comes out as a cube of explosive with a side of 250 million kilometers, right?

]]> By: jess tauber http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11440 jess tauber Sat, 11 Feb 2006 05:17:17 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11440 INCOMING MESSIAHGE FROM GALACTIC JIHAD Not to open can of wormholes- Gavin needs to learn that there are no absolute reference frames- ONLY ABSOLUTE SUBMISSION TO WORD OF DIRAC! Know that size is relative- maybe universe expansion is your ego (and atomic structure, among other things...) SHRINKING. You would never be able to tell, because all your rulers are shrinking as well, whereas OUR RULER (BLESSED BE THE RULER OF CREATION) NEVER SHRINK. BIG BANG RADIATION didn't red shift- you blue shifted, because YOU ARE SO SMALL, AND SO SAD! DO YOU SEE ME??? I AM CRUSHING YOUR HEAD!!! INCOMING MESSIAHGE FROM GALACTIC JIHAD

Not to open can of wormholes- Gavin needs to learn that there are no absolute reference frames- ONLY ABSOLUTE SUBMISSION TO WORD OF DIRAC!

Know that size is relative- maybe universe expansion is your ego (and atomic structure, among other things…) SHRINKING. You would never be able to tell, because all your rulers are shrinking as well, whereas OUR RULER (BLESSED BE THE RULER OF CREATION) NEVER SHRINK. BIG BANG RADIATION didn’t red shift- you blue shifted, because YOU ARE SO SMALL, AND SO SAD!

DO YOU SEE ME??? I AM CRUSHING YOUR HEAD!!!

]]> By: Troy http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11439 Troy Fri, 10 Feb 2006 22:38:34 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11439 I don't think it is that pretty. Compared to say Hyakutake on an icy moonless night. I don’t think it is that pretty. Compared to say Hyakutake on an icy moonless night.

]]> By: Gavin Flower http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11422 Gavin Flower Fri, 10 Feb 2006 04:48:37 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11422 Hi, I was wondering if anyone competent in astrophysics here (or relevant disciplines) has had a critical look at Alexander Mayer's ideas about "Gravitational Transverse Redshift" and the implication that the red shift of distant galaxies therefore do not imply a "Big Bang". I have looked at his two pdf files of lecture notes - his ideas appear reasonable to me. He seems to neatly explain the cosmic background radiation as well. Hi,

I was wondering if anyone competent in astrophysics here (or relevant disciplines) has had a critical look at Alexander Mayer’s ideas about “Gravitational Transverse Redshift” and the implication that the red shift of distant galaxies therefore do not imply a “Big Bang”.

I have looked at his two pdf files of lecture notes – his ideas appear reasonable to me. He seems to neatly explain the cosmic background radiation as well.

]]> By: Laguna2 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11437 Laguna2 Thu, 09 Feb 2006 22:12:34 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11437 Thank you for my new Desktop background. That pic is beautiful. Thank you for my new Desktop background.
That pic is beautiful.

]]> By: Nigel Depledge http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/comment-page-1/#comment-11436 Nigel Depledge Thu, 09 Feb 2006 20:55:26 +0000 http://blogs.discovermagazine.com/badastronomy/2006/02/08/fireworks-and-pinwheels/#comment-11436 Thanks, BA, for another superb pic. And some staggeringly big numbers to go with it. Thanks, BA, for another superb pic. And some staggeringly big numbers to go with it.

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