Astrology charts are usually geocentric (from the view of Earth). Geocentric astrology puts the Earth in the centre of the chart.
Compare to heliocentric astrology which looks at the solar system from the Sun's perspective.
The question often arises as to why astrology charts are drawn with the Earth at the centre of the solar system, even though we know the Sun is at the centre. The reason is because we were born on the Earth, not on the Sun, and the chart is meant to show the state of our solar system from the perspective of the person being born.
So, if/when humanity colonizes Mars, for example, astrologers of the future will no doubt draw up charts for people born on Mars by placing Mars at the centre of the chart.
