Ketu is the Moon's south node, a shadow planet with no body of its own. It stands for letting go, the past, sudden endings and the turn inward. It moves backward through the zodiac, and Rahu always sits in the opposite sign, reaching for what Ketu releases. Capricorn is a movable earth sign ruled by Saturn, which is neutral to Ketu: the sign of status, duty, government and the long climb.
With Rahu in Cancer, home, homeland and belonging are what the world is reaching for. On the Ketu side, institutions and hierarchies lose their hold. Old orders fall. Careers end suddenly. The lesson is that a structure lasts only as long as people believe in it.