ring of fire

http://www.nasa.gov/vision/universe/..._nsu_0205.html

--
Stev Lenon 91B20 '68-'69
When the dawn came up like thunder

http://web.tampabay.rr.com/stevglo/i...age92kword.htm

"slenon" wrote in message
...
http://www.nasa.gov/vision/universe/..._nsu_0205.html

--

I read about that yesterday on reuters. Looking at the first picture reminds
me that pictures like that always give me problems. It was similar in the
first StarWars when the DeathStar blew up and the Millennium Falcon was
racing away from the expanding wavefront, and in the background you could
see the same image as that picture.

The problem, of course, is that gamma rays travel at the speed of light, so
we would never be able to see an image like that one in the illustration. To
see that image, the light image of the expanding shell would have to travel
faster than the shell itself, which it cannot do.

What we'd see instead is a complete normal star, until the moment the
gamma/light shell hit us and we'd see the entire thing light up at once.
Like watching a flashbulb go off....you don't see the expanding sphere of
light...you just see the thing flash when the sphere of light hits you.

--riverman
(Science R us)

In article ,
"riverman" wrote:

"slenon" wrote in message
m...
http://www.nasa.gov/vision/universe/..._nsu_0205.html

--

I read about that yesterday on reuters. Looking at the first picture reminds
me that pictures like that always give me problems. It was similar in the
first StarWars when the DeathStar blew up and the Millennium Falcon was
racing away from the expanding wavefront, and in the background you could
see the same image as that picture.

The problem, of course, is that gamma rays travel at the speed of light, so
we would never be able to see an image like that one in the illustration. To
see that image, the light image of the expanding shell would have to travel
faster than the shell itself, which it cannot do.

What we'd see instead is a complete normal star, until the moment the
gamma/light shell hit us and we'd see the entire thing light up at once.
Like watching a flashbulb go off....you don't see the expanding sphere of
light...you just see the thing flash when the sphere of light hits you.

--riverman
(Science R us)

Oh, really?

http://www.hubblespacephotos.com/sn1987a_ring.html

--

Joe Ellis

you don't see the expanding sphere of light...you just see the thing flash
when the sphere of light hits you.
--riverman
(Science R us)

No argument. It has been a long time since college Astronomy class. But
the image is interesting at least and the continual discoveries that come
from non-visible electro-magnetic radiation imaging are incredible. We've
come a long way from Willi Ley on the Disney Hour with his circular space
station model. It always thrills me when I see the space station overhead
now.

We have a room reserved on Merrit Island for the next shuttle launch.


--
Stev Lenon 91B20 '68-'69
When the dawn came up like thunder

http://web.tampabay.rr.com/stevglo/i...age92kword.htm

In article ,
"riverman" wrote:

snip

I read about that yesterday on reuters. Looking at the first picture reminds
me that pictures like that always give me problems. It was similar in the
first StarWars when the DeathStar blew up and the Millennium Falcon was
racing away from the expanding wavefront, and in the background you could
see the same image as that picture.

snip

.... and if ONE ring is impossible, then THREE...

http://www.hubblespacephotos.com/sn1987a.html

--

Joe Ellis

"Joe Ellis" wrote in message
...
In article ,
"riverman" wrote:

"slenon" wrote in message
om...
http://www.nasa.gov/vision/universe/..._nsu_0205.html

--

I read about that yesterday on reuters. Looking at the first picture
reminds
me that pictures like that always give me problems. It was similar in the
first StarWars when the DeathStar blew up and the Millennium Falcon was
racing away from the expanding wavefront, and in the background you could
see the same image as that picture.

The problem, of course, is that gamma rays travel at the speed of light,
so
we would never be able to see an image like that one in the illustration.
To
see that image, the light image of the expanding shell would have to
travel
faster than the shell itself, which it cannot do.

What we'd see instead is a complete normal star, until the moment the
gamma/light shell hit us and we'd see the entire thing light up at once.
Like watching a flashbulb go off....you don't see the expanding sphere of
light...you just see the thing flash when the sphere of light hits you.

--riverman
(Science R us)

Oh, really?

http://www.hubblespacephotos.com/sn1987a_ring.html


The Hubble picture is of the dust and debris (mostly dust) left behind. The
artists conception picture is of the initail gamma ray flare (as was the
StarWars thingy). You wouldn't see the initial gamma blast coming (or even
the inital light blast), but you'd certainly see the debris left behind
afterwards.

--riverman

riverman wrote:
"slenon" wrote in message
...

http://www.nasa.gov/vision/universe/..._nsu_0205.html

--


I read about that yesterday on reuters. Looking at the first picture reminds
me that pictures like that always give me problems. It was similar in the
first StarWars when the DeathStar blew up and the Millennium Falcon was
racing away from the expanding wavefront, and in the background you could
see the same image as that picture.

The problem, of course, is that gamma rays travel at the speed of light, so
we would never be able to see an image like that one in the illustration. To
see that image, the light image of the expanding shell would have to travel
faster than the shell itself, which it cannot do.

That may disturb you, but what disturbs me is that if the burst happened
within 10 light years of Earth we'd all be dead.

--
Cut "to the chase" for my email address.

That may disturb you, but what disturbs me is that if the burst happened
within 10 light years of Earth we'd all be dead.

I got a tinfoil trifoil. I'm safe.
--
Frank Reid
Euthanize to reply

Frank Reid wrote:
That may disturb you, but what disturbs me is that if the burst
happened
within 10 light years of Earth we'd all be dead.

I got a tinfoil trifoil. I'm safe.
--
Frank Reid
Euthanize to reply


I already have a closet lined with tinfoil because of the government
radio waves beig beamed at us for brainwashing. I'll just duck in
there unless the government radio waves tell me to stand outside and
look up.

Wayne
to fish is human....to release Divine!!

"Frank Reid" wrote in message
...
That may disturb you, but what disturbs me is that if the burst happened
within 10 light years of Earth we'd all be dead.

I got a tinfoil trifoil. I'm safe.

Assuming that the solipsist point of view is unsubstantiated, I think it's
safe to say that all of us......including Stevie (bless his poor little
disturbed heart).....are safe......for the moment.

Wolfgang
who, possessed of an extraordinary imagination, is not at all sure that the
above assumption is necessarily tenable.