Cosmic dust – the basic matter which builds planets and it has been hypothesized that it is created by stellar explosion. Astronomers have not been able to unravel the mystery of how the fine grains of Cosmic dust were formed from stellar material.
Further puzzling was the fact that how could something so delicate would be able to endure the shock waves of supernova combustions.
All these questions will be answered to a great deal if not fully.
Explains Christa Gall, an astronomer at Aarhus University, in Denmark, and author of a new study on the phenomenon, “When the star explodes, the shockwave hits the dense gas cloud like a brick wall. It is all in gas form and incredibly hot, but when the eruption hits the ‘wall’ the gas gets compressed and cools down to about 2,000 degrees.”
Gall continues “At this temperature and density elements can nucleate and form solid particles. We measured dust grains as large as around one micron (a thousandth of a millimeter), which is large for cosmic dust grains. They are so large that they can survive their onward journey out into the galaxy.”
This conclusion was derived by Gall and her fellow researchers after watching a supernova explosion up close. In 2010, the eruption of the extremely bright SN2010jl — located in the galaxy UGC 5189A gave the astronomers a golden chance to monitor the formation of dust. Any Supernova is very dynamic and Gall her team of astronomers monitored the supernova explosion for two years and had the chance to get new insights into how dust survives and coalesces in the wake of a violent supernova.
Gall further added that her research gives new insight on the phenomenon- how dust is created and how it survives the shock waves.