ok app, too superfical – Stargazer (Free!) Review
and pictures or graphics would help a lot! like in
Lamda =symbol for wavelength
or the definition of "planet"
or "Evening Star".
For people, who do not know, that there is a difference of astrology and astronomy.
Good for quick safety check on technical terms.
Many of them I would have explained differently.
Review by sauceolino on
Stargazer (Free!).