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GOURDHEAD
2003-Nov-10, 09:14 PM
Several remnants of supernovae are believed to have planets orbiting them. Some have guessed that these planets formed after the supernova explosion. What are the latest best guesses concerning whether pre-supernova planets survived the explosion versus post-supernova formation of the planets?

My take is that an object the size of earth's moon or larger at 0.5 AU or greater distance from the star will survive a supernova explosion, although not necessarily a nova which encompasses the object over a number of months, because the duration of the intense heating and outblasting will be relatively short as the debris will be traveling past the object at appreciable fractions of light speed. Erosion from the debris will probably last only a few days, maybe only a few hours. Is there a website with some quantitative analysis of this phenomenon? :unsure:

VanderL
2003-Nov-11, 09:17 PM
Hi there,

There is even a third option, where the process we call nova (or supernova) is actually the process where a planet is ejected from the star. This event is called "fissioning" and it would explain why so many large planets circle so close to their (literally) parent stars. Anything between a planet and another star can be formed in a fissioning event, it would also explain the abundance of multiple star systems.
Details can be found at www.electric-cosmos.org and www.holoscience.org

Cheers