by makc » Tue Sep 13, 2005 8:36 am
palmona wrote:Can you explain why the astroid theory is more widely accepted by astronomers than a nearby super nova.
There were two craters of matching age found on the floor of Mexican gulf. This finding even made an APOD
once. Also, search for Chicxulub on the web ([
1], [
2]).
2nd thing is not really related, but I'll shoot it any way.
Los Angeles Times ([url=http://www.latimes.com/news/science/la-sci-explosion13sep13,1,1199448.story?coll=la-news-science]read the rest[/url]) wrote:In the equivalent of spotting a bonfire at the dawn of time, NASA's orbiting Swift satellite has detected the most-distant exploding star — a cosmic suicide that took place just 500 million years or so after the creation of the universe, scientists say.
Located 12.6 billion light years from Earth, the explosion shows that giant stars formed earlier than previously thought.
It's thought that a gamma ray burst occurs somewhere in the universe virtually every day. Yet because the bursts last, at most, a few minutes, detecting them as they happened was impossible before Swift.
In this case, Swift picked up the first evidence of an explosion lasting 200 seconds — said to be the longest on record — on Sept. 4. It relayed word to astronomers, who confirmed the finding by tuning in to the burst's afterglow, which can last several days.
"This is uncharted territory," said University of North Carolina astronomer Daniel Reichart. "This burst smashes the old distance record by 500 million light years. We are finally starting to see the remnants of some of the oldest objects in the universe."
[quote="palmona"]Can you explain why the astroid theory is more widely accepted by astronomers than a nearby super nova.[/quote] There were two craters of matching age found on the floor of Mexican gulf. This finding even made an APOD [url=http://antwrp.gsfc.nasa.gov/apod/ap000226.html]once[/url]. Also, search for Chicxulub on the web ([[url=http://www.google.com/search?hl=en&q=Chicxulub]1[/url]], [[url=http://search.msn.com/results.aspx?q=Chicxulub]2[/url]]).
2nd thing is not really related, but I'll shoot it any way.
[quote="Los Angeles Times ([url=http://www.latimes.com/news/science/la-sci-explosion13sep13,1,1199448.story?coll=la-news-science]read the rest[/url])"]In the equivalent of spotting a bonfire at the dawn of time, NASA's orbiting Swift satellite has detected the most-distant exploding star — a cosmic suicide that took place just 500 million years or so after the creation of the universe, scientists say.
Located 12.6 billion light years from Earth, the explosion shows that giant stars formed earlier than previously thought.
It's thought that a gamma ray burst occurs somewhere in the universe virtually every day. Yet because the bursts last, at most, a few minutes, detecting them as they happened was impossible before Swift.
In this case, Swift picked up the first evidence of an explosion lasting 200 seconds — said to be the longest on record — on Sept. 4. It relayed word to astronomers, who confirmed the finding by tuning in to the burst's afterglow, which can last several days.
"This is uncharted territory," said University of North Carolina astronomer Daniel Reichart. "This burst smashes the old distance record by 500 million light years. We are finally starting to see the remnants of some of the oldest objects in the universe."[/quote]