The term Graha in Sanskrit language, which literally means to seize, or to hold, is considered to be a cosmic influencer on the living beings of the earth. In Hindu astrology there is a total of nine influencers who are together termed as the Navagrahas. All the of the navagraha are said to have have relative movement with respect to the background of fixed stars in the zodiac. The Navagrahas of Hindu astrology are Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu (the ascending node of the moon) and Ketu (the descending node of the moon).
Honoring the nine planets and satiating them through mantra and/or ritual is a common recommendation suggested by Hindu astrologers to make our life not only more peaceful, but also fruitful. To serve this purpose there are numerous chants and rituals suggested in the Vedic tradition.
One such chant that honors all nine planets is called the Navagraha Stotram. The author or origin of this chant is unknown, but its popularity is undisputed.
Enjoy it and may the navagrahas protect you.