Shiva Purana
ग्रहाणां मण्डलं कृत्स्नं शशेरुपरि संस्थितम्॥ सनक्षत्रं सहस्राणि दशैव परितोपरि ॥ ४॥
The spheres of the planets are entirely situated above the moon along with the stars about ten thousand Yojanas one above the other.
english translation
grahANAM maNDalaM kRtsnaM zazerupari saMsthitam॥ sanakSatraM sahasrANi dazaiva paritopari ॥ 4॥
hk transliteration by Sanscript