this probably has been discussed before, but I wouldn't know how to search for it.

I want to do a repetition of spheres, where each next sphere is rotated around an external point and scaled down a bit. every rotational angle is also scaled, e.g. the first one is 10 deg, the next (10 * 0.8) deg, then (10 * 0.8 * 0.8) deg etc. Same for the scaling, first 10 mm, second 10 * 0.8 mm, third 10 * 0.8 * 0.8 mm etc.

the result looks like the image below.

I need several long series of objects like this, and it is a tedious job to do it all manually. is there a way to automate it?

thanks
wim