Jupiter is known as the "guru" of all planets and rules over knowledge, wisdom, expansion, growth, and prosperity in Vedic astrology. When it comes to Jupiter placed in the Krittika nakshatra, which is ruled by the Sun and spans from 26 degrees 40 minutes Aries to 10 degrees Taurus, there are several astrological predictions that can be made. Krittika is associated with fire energy and imparts fierce determination and courage to those under its influence.