any1 knows if this is something occult? what does it mean.
Well it's a stretch but we know upper and lower case delta can be used as a symbol for change in a variable, so from this we can construe something along the lines of
>the Sun changes the Earth in Summer.
>Second symbol is sometimes used for the astrological sign of "Capricorn"
No, it's a delta. This is what you're mis-remembering.
It's been solved see:
sun delta earth summer
hmmm... makes no real sense?
the last one is LIFE
the second could be a variation of WATER
that would make sense: sun water earth llife
Don't you thin the 3rd could also be Saturn?