we are all made of stars , but who made these stars

The big dip, or the saptarishi are the most prominent stars of ursa major.As a kid, this constellation used to be the first one i could recognise every starry night.
Before the creation started, Lord Brahma needed a few people who can be held responsible for the creation of the remaining universe.Therefore he created 10 mind born sons. The Manusmriti enumerates them as Mareechi, Atri, Angiras, Pulastya, Pulah, Kratu, Vasishth, Daksh, Bhrigu, and Narad. However since all these sons of his were born out of his mind rather than body, they are called Manas Putras or mind-sons.
Sapta Rishis are the Hierarchy working under the guidance of the Highest Creative Intelligence, Brahma. . They bring down to the earth the required Knowledge and Energies to strengthen the processes of Transition (Pralaya). They are naturally the most evolved Light Beings in the Creation and the guardians of the Divine Laws.they are born and live for a period of time known as a manvantar (306,720,000 Earth years).The Seven Holy Rishis (Saptarishis) are said to still guide humankind from the inner worlds.  
At the end of a manvantar, mass-extinctions are said to occur throughout the numerous planetary systems of the universe and the Saptarishis are assigned the task to fill the universe with progeny once more at the start of every manvantar. At the end of a manvantar, the Saptarishis get merged with God. this concept of creation and destruction of planets is a scientific theory. 
now the most intresting thing about hindu mythology is although these sapta rishis are divine and powerful , their existence is humanized . they are born, they live, attain powers, fight, marry , give birth and die. the seven sisters constellation or Pleiades was formed acoording to this myth.
the seven sages were happily married to seven sisters . They originally lived all together in the northern sky. But one day, the god of fire, Agni, fell in love with the seven sisters. Trying to forget his love, Agni wandered in the forest where he met Svaha, the star Zeta Taurithis .
Svaha was at once infatuated with Agni. To conquer Agni's love, Svaha disguised herself as six of the seven Krttika. Agni who believed he had conquered the attractive wives of the seven Rishis.
Svaha had a child. Rumors began to spread that six of the Rishis' wives were his mother. The seven Rishis divorced their wives. Arundhati was the only one that remained with her husband as the star Alcor. The other six Krttika went away to become the Pleiades.
so according to this myth pleiades was formed out of the big dipper. one day this might be proved true since today we know that Extreme electrical stress can lead to a such a star's splitting into parts as
Wal Thornhill once said:
"….. internal electrostatic forces prevent stars from collapsing gravitationally and occasionally cause them to "give birth" by electrical fissioning to form companion stars and gas giant planets. Sudden brightening, or a nova outburst marks such an event. That elucidates why stars commonly have partners and why most of the giant planets so far detected closely orbit their parent star." thus the concept of creation of earth and other planets by saptarishis seems as a possibility.

whether the myths are true or not , the methodology of myth, or storytelling is a very effective way to explain complex phenomenon of our universe by familiarizing these concepts to masses even in todays modern times.

kinshuk surjan.