Excerpt from my latest Sasstrology post (please leave comments on the Sasstrology site):
"Outer planets represent universal themes and transformative energies that are bigger than you. When two or more outer planets aspect each other, the result packs a wallop. But when they aspect each other in your natal chart, their energy is not always felt directly. These aspects are present for a large group of people and can (in some cases) last a few years, because the planets move slowly. However, when combined outer planets aspect a personal planet, their larger-than-life impact becomes intimate. The effect can be akin to using a nuclear generator to power a flashlight. The surge of energy through your love life can feel overwhelming."