The Earth is passing through a Supernova cloud of debris and has been doing so for the last 30,000 years.
Stars are much like people, they are born, live their lives then they die.
Massive stars burn huge amounts of fuel at their core. Heat creates pressure, and stops the star from collapsing. While gravity pulls the star inward; the nuclear fuel pushes outward and cancels out.
However when a massive star begins to run out of fuel, gravity wins out and the star collapses so fast that it creates enormous shock wave.
This explosion in huge stars is called a supernova.
How Do We Know The Earth is Passing Through a Supernova Cloud?
An iron-60 isotype predominantly produced in supernova explosions, takes 15 million years to decay.
This means that we can use it to measure our exposure to supernova clouds.
Research teams confirmed our planet is continuing to be dusted with this iron-60 isotype, indicating we are still currently passing through this debris.
The levels of this isotype has also been found in samples of lunar soil returned during the Apollo missions.
Deep sea sediment, shows us that the level of the isotype has continued over the past 6 million years, indicating this is a current phenomena in the relative history of the Earth.
Our solar system and of course the Earth are passing through a Supernova cloud of debris currently.
This cloud came from a massive star that collapsed and then exploded throwing out huge quantities of material that spans a vast distance.
Many of the heavier elements on earth can only be created in a supernova.
Gold is an excellent example of this; all the gold on Earth came from a supernova, therefore Earth has a finite supply making the metal even more precious and valuable.
At some point we will reach the edge of this Supernova cloud of debris and pass beyond its reach.