Philosophy: who or whom are the seven rshis?

They're listed in SB 9.16.24p. Constellation Ursa Major aka Big Dipper.

oh yes and please devotees offcourse, have A happy Bishmastami
> http://www.salagram.net/parishad113.htm

haribol!

ok, (SB 6.6.10-11), TRANSLATION.

The son of Sańkalpā was known as Sańkalpa, and from him lust was born. The sons of Vasu were known as the eight Vasus. Just hear their names from me: Droṇa, Prāṇa, Dhruva, Arka, Agni, Doṣa, Vāstu and Vibhāvasu. From Abhimati, the wife of the Vasu named Droṇa, were generated the sons named Harṣa, Śoka, Bhaya and so on.

yes, the purana was saying; ...Bhishma's name in his boyhood was Devavrata. He was the eighth son of Shantanu, a king of the lunar dynasty and Gangadevi. This boy was the human embodiment of Dyau, one of the Ashthavasus. Shantanu, his father was the re-birth of another king, Mahabhisheka.

"... King Mahabhisheka after his death, attained Vishnuloka. Once he went to visit Brahma at Satyaloka. At that time Ganga devi was also present in Brahma's assembly. In that pious atmosphere, a gentle breeze began to blow and Gangadevi's clothes were slightly deranged. Just at that moment Mahabhisheka took a stealthy glance at her and she also returned that glance. This was noted by Brahma who turned both of them into human beings by a curse. Gangadevi begged pardon and Brahma lifted the curse and blessed her that the Ashthavasus would come to the earth to be born as her sons and that afterwards she could come back to heaven. After that Gangadevi was born as a mortal woman in the world under the name Ganga and she spent her days in the forests near the Ganga river valleys.
In those days the ruler of the lunar dynasty was a king named Pratipa. Having no children he went to the bank of the Ganga and performed tapas there. Gangadevi who was moving about in the forests nearby, saw the king deeply absorbed in tapas. She approached him and sat on his right thigh. She wanted the king to be her husband. He explained to her that the right thigh is the proper seat of the daughter-in-law and so she would become his son's wife in due course. In due course of time, Pratipa has a son, Shantanu, born to him. When Shantanu grew up into a young man, one day he went for a hunt to the Ganga-valley and there he met Gangadevi. He fell in love with her at first sight and courted her. Gangadevi agreed to become his wife on the condition that he should not say anything to displease her and if he violated that condition she would leave him. The king accepted the condition and they became man and wife.
At about that time, the wife of Dyo, one of the Ashthavasus, happened to see the sacrificial cow of the sage Vasishtha and wished to have it. She expressed her desire to her husband, Dyo. Dyo with the other seven vasus went and took away by force Vasishtha's cow. Vasishtha in his anger cursed the Ashthavasus to be born as mortals. they repented and begged pardon from Vasishtha. The sage told them that all of them would be born as the sons of Gangadevi and all except Dyo, who actually stole the cow, would return to heaven at the time of birth itself. As for Dyo, he would continue to live in the world for a long time, as an adventurous hero.
Gangadevi became pregnant and gave birth to her first child. She carried the child to the river Ganga and threw it into the river. Shantanu who followed her up to the river bank, did not say anything against her, remebering his promise...."

they are the (asta vasus) listed differently by name in the Srimad-Bhägavatam than in Mahäbhärata, epic ?!

here Śrī Śukadeva Gosvāmī is telling Parikshit Maharaja to listen from him only.

Seven rsis, residing on seven stars, and eight vasus (whose residence is not specified, afaik) are different sets of personalities. Out of asta vasus only Bhisma was born on earth. Vasistha is one of saptarsis. His cow is named Nandini (SB 1.19.9-10p.).

saptarṣi-maṇḍala -;

Kaśyapa: One of the prajāpatis, the son of Marīci and one of the sons-in-law of Prajāpati Dakṣa. He is the father of the gigantic bird Garuḍa, who was given elephants and tortoises as eatables. He married thirteen daughters of Prajāpati Dakṣa, and their names are Aditi, Diti, Danu, Kāṣṭhā, Ariṣṭā, Surasā, Ilā, Muni, Krodhavaśā, Tāmrā, Surabhi, Saramā and Timi. He begot many children, both demigods and demons, by those wives. From his first wife, Aditi, all the twelve Ādityas were born; one of them is Vāmana, the incarnation of Godhead. This great sage, Kaśyapa, was also present at the time of Arjuna's birth. He received a presentation of the whole world from Paraśurāma, and later on he asked Paraśurāma to go out of the world. His other name is Ariṣṭanemi. He lives on the northern side of the universe.

Bharadvāja: He is one of the seven great ṛṣis and was present at the time of the birth ceremony of Arjuna. The powerful ṛṣi sometimes undertook severe penances on the shore of the Ganges, and his āśrama is still celebrated at Prayāgadhāma. It is learned that this ṛṣi, while taking bath in the Ganges, happened to meet Ghṛtacī, one of the beautiful society girls of heaven, and thus he discharged semen, which was kept and preserved in an earthen pot and from which Droṇa was born. So Droṇācārya is the son of Bharadvāja Muni. Others say that Bharadvāja the father of Droṇa is a different person from Maharṣi Bharadvāja. He was a great devotee of Brahmā. Once he approached Droṇācārya and requested him to stop the Battle of Kurukṣetra.

Vasiṣṭha: The great celebrated sage among the brāhmaṇas, well known as the Brahmarṣi Vasiṣṭhadeva. He is a prominent figure in both the Rāmāyaṇa and Mahābhārata periods. He celebrated the coronation ceremony of the Personality of Godhead Śrī Rāma. He was present also on the Battlefield of Kurukṣetra. He could approach all the higher and lower planets, and his name is also connected with the history of Hiraṇyakaśipu. There was a great tension between him and Viśvāmitra, who wanted his kāmadhenu, wish-fulfilling cow. Vasiṣṭha Muni refused to spare his kāmadhenu, and for this Viśvāmitra killed his one hundred sons. As a perfect brāhmaṇa he tolerated all the taunts of Viśvāmitra. Once he tried to commit suicide on account of Viśvāmitra's torture, but all his attempts were unsuccessful. He jumped from a hill, but the stones on which he fell became a stack of cotton, and thus he was saved. He jumped into the ocean, but the waves washed him ashore. He jumped into the river, but the river also washed him ashore. Thus all his suicide attempts were unsuccessful. He is also one of the seven ṛṣis and husband of Arundhatī, the famous star.

Atri: Atri Muni was a great brāhmaṇa sage and was one of the mental sons of Brahmājī. Brahmājī is so powerful that simply by thinking of a son he can have it. These sons are known as mānasa-putras. Out of seven mānasa-putras of Brahmājī and out of the seven great brāhmaṇa sages, Atri was one. In his family the great Pracetās were also born. Atri Muni had two kṣatriya sons who became kings. King Arthama is one of them. He is counted as one of the twenty-one prajāpatis. His wife's name was Anasūyā, and he helped Mahārāja Parīkṣit in his great sacrifices.

PURPORT - Bhaktivedanta VedaBase: Śrīmad Bhāgavatam 9.16.24

The seven stars revolving around the polestar at the zenith are called saptarṣi-maṇḍala. On these seven stars, which form the topmost part of our planetary system, reside seven sages: Kaśyapa, Atri, Vasiṣṭha, Viśvāmitra, Gautama, Jamadagni and Bharadvāja. These seven stars are seen every night, and they each make a complete orbit around the polestar within twenty-four hours. Along with these seven stars, all the others stars also orbit from east to west. The upper portion of the universe is called the north, and the lower portion is called the south. Even in our ordinary dealings, while studying a map, we regard the upper portion of the map as north.