Dṛṣṭi (aspect) in Vedic astrology is a planet's influence cast upon a house or another planet through 'sight.' Unlike Western astrology's degree-based aspects, Vedic aspects are house-based. All planets aspect the 7th house from their position (opposition). Mars additionally aspects the 4th and 8th houses (squares). Jupiter aspects the 5th and 9th houses (trines). Saturn aspects the 3rd and 10th houses. Rahu and Ketu's aspects are a matter of ongoing debate — some schools give them 5th, 7th, and 9th aspects. Aspects from natural benefics (Jupiter, Venus, well-placed Mercury) are considered auspicious; from malefics (Saturn, Mars, Rahu), challenging.