Our Sun formed from the jumbled leftovers of the nuclear-fusing furnaces of earlier generations of stars--and like other stars, it was born within a dense, frigid blob cradled within one of the giant, dark, interstellar molecular clouds that float through our Milky Way Galaxy in huge numbers. This especially dense blob eventually collapsed under its own gravitational pull to create our brilliant baby Star. Most of the gas and dust that swirls within these beautiful, ghostly molecular clouds originates from the stellar furnaces of previous generations of doomed stars, that either blasted themselves to shreds in a supernova explosion, or (if they were smaller stars) gently puffed their outer gaseous layers into interstellar space. From this lingering material, left as a legacy by a multitude of long-dead stars, new baby stars were born from the wreckage of previous stellar generations. In June 2018, a team of scientists announced their new discovery that certain interplanetary dust particles are primordial leftovers from the initial birth of our Solar System.