Unicode symbols for astronomy and Astrology.
sun β βΌ β π
moon π π π π π π π π π β½ βΎ π π π π
planets βΏ β β β β β β β β’ β
dwarf planets β β³ β΄ β΅ βΆ β·
β β βΈ
β β β β
zodiac β β β β β β β β β β β β
astrology βΉ β» βΊ βΌ
Note that there are 2 symbols for earth: {β, β} The one with up-side-down female sign is probably because earth was associated with Gaia (mythology), the Greek goddess of earth. That's why we say βmother earthβ.
The symbol for Venus β is the same as the female sign. According to Wikipedia, it's understood to originate as a symbol for mirror. Venus is the Roman goddess borrowed from Greek's Aphrodite, the goddess of love οΌ sex. That's her mirror, she needs it. See also: the Story of Cupid and Psyche.
For Mars β, we don't need to philosophize what that arrow means.
Today, Pluto β is no longer considered a planet, but a dwarf planet, alone with other dwarf planet discovered recently. One of them is Eris (dwarf planet), but it doesn't have agreed-upon sign, and no Unicode symbol dedicated to it. Some proposed symbol for Eris is two colliding arrows, β ββ or ββ, sometimes used in math for Proof by contradiction. See: Hand of Eris.
The BLACK MOON LILITH βΈ is interesting. It is not a astronomical body, but something cooked up by astrologists, claiming it's the second moon of earth. For some reason, it got a spot in Unicode. Though, there is a asteroid called 1181 Lilith.
Today, scientific publication of astronomy don't use these symbols.