The Planets in Astrology and What Each One Stands For

The ten bodies at a glance

The speeds are real astronomy: they follow from each planet's orbit around the Sun as seen from a moving Earth. The themes are astrological tradition.

The personal planets

The Sun. In astrology, the Sun is the core self, the thing you are becoming. Your Sun sign is the one most people know, because it only depends on your birthday.

The Moon. The Moon is your emotional weather: what comforts you, how you react, what you need to feel safe. Because it moves so fast, two people born a day apart can have different Moon signs. Our Moon phase calendar shows its sign each day.

Mercury. The messenger: how you think, speak, write and learn. Mercury is never more than about 28 degrees from the Sun, so it is always in your Sun sign or one of the signs next to it.

Venus. Love, attraction, taste and what you value. Venus is never more than about 47 degrees from the Sun, so it is always within two signs of your Sun sign.

Mars. Energy, action, anger and desire. Mars shows how you go after what you want.

The social planets

Jupiter. The largest planet is linked with growth, opportunity, optimism and belief. Jupiter spends about a year in each sign, so astrologers read its sign as a shared theme for everyone born that year.

Saturn. Structure, discipline, limits and maturity. Saturn's return to the place it held at your birth, around ages 29, 58 and 87, is one of astrology's best-known milestones.

The outer planets

Uranus, discovered in 1781, Neptune, 1846, and Pluto, 1930, were unknown to ancient astrologers. Modern astrologers gave them meanings linked with sudden change (Uranus), dreams and dissolving boundaries (Neptune) and deep transformation (Pluto). They move so slowly that their signs describe generations more than individuals. In November 2026, for example, Uranus is in Gemini, Neptune at the very start of Aries, and Pluto in Aquarius.

Astronomers reclassified Pluto as a dwarf planet in 2006. Astrologers still use it.

What retrograde means

Every planet except the Sun and Moon sometimes appears to stop and move backward against the stars for a while. This is called retrograde motion. It happens because Earth and the other planet orbit at different speeds: when Earth overtakes an outer planet, or an inner planet overtakes Earth, the other planet seems to slide backward, the way a slower car you pass seems to drift back.

In 2026, for example, Mercury was retrograde from October 24 to November 13 (UT), and Venus from October 3 to November 14 (UT). Astrologers traditionally read retrograde periods as times for review rather than new starts: re-reading, re-thinking, reconnecting. That is tradition, not physics. Mercury retrograde cannot break your phone.

In our birth chart calculator, a planet that was retrograde at your birth is marked R. We detect it by comparing its position with where it is a day later.

Planets and the houses

A planet's sign tells you how it acts; its house tells you where in life. Venus in Libra in the tenth house, for example, might be read as charm and diplomacy (Libra) applied to love and values (Venus) in your career (tenth house). See the twelve houses for what each house covers.

Tables of positions

Astrologers once worked out every chart by hand from an ephemeris, a book of tables listing each planet's position day by day. Many still keep one on the desk: a printed astrological ephemeris is a satisfying way to look up any date. Our birth chart calculator does the same job in a fraction of a second, using the open-source Astronomy Engine library checked against NASA JPL data.

Common questions

Why are the Sun and Moon called planets?

Ancient astronomers called any body that moved against the fixed stars a 'wanderer', planetes in Greek. Astrology kept the old usage.

Is Mercury retrograde real?

The apparent backward motion is real as seen from Earth and can be measured. Mercury itself never reverses its orbit. What it means for daily life is a matter of astrological tradition, not science.