This is an old track I made with the phenomenal Thomas LaFever. 

Supernova have other effects besides a massive explosion, at times, due to the extreme gravitational influx, it can throw planets outside their original orbit and send them hurling through deep space without a parent star. This can also happen if a start system crosses another star system or a black hole. 

A Type i.a. supernova is known as a 'standard candle' in the cosmology community. They are incredibly consistent supernovae as they always will throw the same luminosity no matter what.  Astronomers utilize Type i.a. supernovae to calculate distance.

They only occur in binary systems in which one of the stars is a white dwarf. Once enough matter has fallen into the white dwarf, (critical mass is often referred to as the Chandrasekhar mass, or Chandrasekhar limit), it triggers a violent supernova.

Type i.a. - The Orphaned Planet

Akira