Arthur BesseMA to eleven · 2 years agoDo you know the period of a solar cycle, in earth years?en.wikipedia.orgexternal-linkmessage-square0fedilinkarrow-up13arrow-down10
arrow-up13arrow-down1external-linkDo you know the period of a solar cycle, in earth years?en.wikipedia.orgArthur BesseMA to eleven · 2 years agomessage-square0fedilink
