Cosmic Dust in Vedas

There are a few cosmogonic hymns in Vedas which explains the origin of the Universe - how this universe came into existence and how the universe started? But in certain hymns of Rig Veda, there are references of cosmic dust also. Cosmic dust or space dust is referred to as extraterrestial dust which exists in outer space. It can be intergalactic dust, interstellar or interplanetary. Accumulation of cosmic dust over the time forms planets for example our Earth. And thus it is also known as the building material of Universe. 


RigVeda 10.81.2
किं स्विदासीदधिष्टानमारम्भणं कतमत् स्वित् कथासीत् Ι
यतो भूमिं जनयन् विश्वकर्मा वि द्यामौर्णोन्महिना विश्वचक्षाःΙΙ    

सृष्टि-रचनाकाल से पूर्व परमात्मा कहां निवास करता था? सृष्टि-निर्माण में कौन-सा द्रव्य प्रयुक्त हुआ था? सर्वद्रष्टा विश्वकर्मा ने कहां रहकर आकाश-पृथ्वी का सृजन किया?   

The above Vedic verse discusses about the constituents of the universe. The major issue while discussing the big bang theory is what exactly was there before the big bang? And where the universe was started i.e. which point exactly in space-time continuum

RigVeda 10.72.2
ब्रह्मणस्पतिरेता सं कर्मार इवाधमत् Ι
देवानां पूर्व्ये युगे ऽसतः सदजायत ΙΙ   
कर्मकार के समान ब्रह्मणस्पति ने सृष्टि के आरंभ में देवताओं की उत्पत्ति की Ι नाम और रूप से रहित ये देवता विविध नामों और रूपादि के सहित प्रकट हुए Ι    

Vishvakarma - The Creative Power of the Universe
Further the references of cosmic dust as the constituent of Universe, there are Vedic verses which addresses Vishvakarma who is known as the creator of the Universe, who designed the Universe by blasting (big bang) and smelting.