In contrast, the accretion scenario should produce a significant amount of X-rays for 10 million years preceding the supernova event.
Such a supernova event may pose some threat to life on the Earth.
The location of the supernova event was 16" from the relatively bright nucleus of the galaxy.
Considering that our galaxy averages only one supernova event every thirty years, it was a remarkable coincidence.
This supernova event was observed in a galaxy about 240 million light years (72 million parsecs) from Earth.
On May 9, 1998 a supernova event was observed in this galaxy.
No prior supernova events have been observed in this galaxy.
In this explosive supernova event gravitational waves are liberated.
Texas Supernova Search is one of many ongoing projects to identify and record supernova events.
The star had undergone a supernova event approximately 100,000 years ago.
