Glôb rhithwir ac atlas byd yw Marble - eich cyllell byddin y Swistir ar gyfer mapiau y gallwch eu defnyddio i ddysgu mwy am y Ddaear a phlanedau eraill. … Parhewch i ddarllenMarmor
KStars is a Desktop Planetarium by KDE. It provides an accurate graphical simulation of the night sky, from any location on Earth, at any date and time. …Parhewch i ddarllenKStars