A thing to remember here is that these posts are strictly meant for the particular planet position. Like, today we are looking at Sun in Aquarius, so the description given here may change for you if your Sun is although in the sign of Aquarius but with conjunction with or aspected by other planets.

So, lets see what Sun can do in the sign of Aquarius. 1st lets see what these 2 things represent -

Sun represents Personality, King, Government, Father, Authority, Career, Top Positions, Ego, Self Esteem, Health, Education etc.

Aquarius is 11th sign of zodiac belt, hence it signifies the things and energy related with 11th house of horoscope, such as Gains, Desires, Hopes and Wishes, Large Organisations, Network Circles etc. Besides this, Aquarius also represents Scientific Thinking & Research, Uplifting the Society, Higher Goals & Rewards for all. Aquarius is made of another set of 2 and half Nakshatra, i.e. Dhanishtha, Satabhisha and Purva-Bhadrapada. Aquarius Lord is Saturn & Rahu.

When Sun comes in Aquarius, these people are natural scientists and humanitarians. They are naturally inclined towards Scientific or any other research oriented work, but the purpose of research will be to help the humanity. So, they are the people who will work rigorously for common benefit of all. They want to help everyone with their work. That's why they end up in inventing those scientific formulas or technical things which help everyone in society. If Sun is in Satabhisha Nakshatra, then research can go into medical field. Their research and inventions help the mankind to reap benefits for generations. Their father is also research oriented and would be doing similar work. As Aquarius' lord is Saturn, which is arch-enemy of Sun, they may have a distant relation with father for any reason. Father may also be a strict disciplinarian or not easily approachable.

But the extent of this impact will always be as per the Nakshatra Sun is in. In Dhanishtha Nakshatra, its lord Mars' position will have lots of impact on Sun's role. In Satabhisha Nakshatra, Rahu will impact Sun's functioning. In Purva-Bhadrapada, Jupiter will have its say in Sun's role in Aquarius.

Also, as the lord of Aquarius, Saturn's & Rahu position will have highest impact on Sun, more so as Rahu and Saturn both are strong enemies of Sun. Whatever may be the condition, native will feel restricted relation from Father.