Thursday, April 14, 2011
This blog is accompanied by an image of the Crab Nebula. The creation of the Crab Nebula corresponds to the bright SN 1054 supernova that was recorded by Chinese and Arab astronomers in 1054 CE. This nebula is about 7,000 light years away. No religion would have ever told you that.
There have probably been around 20 or 30 supernovas within 40 light-years of us during the past 5 billion years. Several of those supernovas supplied their elemental remnants to the cloud of dust that congealed to form our solar system. Elements heavier that iron, such as gold and uranium, are formed from the intense heat of a supernova explosion. You are made from such explosions. No religion would ever tell you that either.