fixing overlapping moons' labels in the plot and animation
adding interesting examples of configuration moments to the documentation
galsat_animate() animates the motion of the moons around Jupiterdelta_t() function to generate a vector of valueschanging the parameters of the galsat() function to UTC (earlier in ET)
new function delta_t() returns the delta-T in units of seconds
galsat() & galdraw()) to one galsat()adding date & time validation
adding comments for the R code
displaying a photo of Jupiter instead of a circle
hiding the moons that are behind Jupiter's disk
galdraw() visually shows satellites' positionsgalsat() calculates numerical positions of Galilean satellites