Brihaspati and Shukra - Guru Planets
There can be other interpretations too. Brihaspati (Dev-Guru) and Shukra (the
Daitya-Guru) both are the Guru planets.
--Brihaspati represents wisdom and is the preacher of Vidyaa, thus it leads
to right conduct and help to know ones real Swaroop.
--Moreover the Nava Graha Stotra calls Shukra as "Sarv Shaastra Pravaktaa".
--The Sun taught the Ved to Hanumaan and also to Yagyavalkya. Even the Jyotish was
taught to Mayaasur by Soorya Dev.
--According to some astrologers Ketu also gives Adhyaatm Gyaan under some
favorable placements. Ketu was raised by a Braahman family and had access
to the Vaidik knowledge, if one cares for the mythology.
--Mangal's (Mars) influence is however required for one to learn the science of warfare.
--Venus is the preacher of A-Vidyaa - Neeti Shaastra. Thus it teaches us as to how
enjoy this material world.
This is the reason that
Yaagyavalkya says in Eesh Upanishad, that a proper mix of A-Vidyaa and
Vidyaa help to enjoy till Jeev is in a mortal body and after death, soul
What is the meaning of afflicting planet? An afflicting planet gives
adverse planetary effect. It arises in many ways.
(1) placement of planets in the 6th, 8th, and/or 12th houses or their
rulership of these houses;
(2) association of a house or a planet with malefic Saturn, Mars, or Raahu;
(3) occupation of Baadhak (q.v.) planets in a house or their association
with any other planet;
(4) Combustion (q.v.) of a planet; or
(5) association of Sun with Saturn, Raahu or Ketu.
Affliction is also caused to a planet if it occupies an inauspicious asterism.