Patanjali's yoga sutras

चन्द्रे ताराव्यूहज्ञानम् ॥ ३.२६ ॥

3.27 candre tārāvyūhajñānam

candre = moon

tārā = stars

vyuha = arrangement

jñānaṃ = insight

Meditating on the moon and the stars, you gain insights into their arrangement.