the-actual-universe: Astronomical UnitsCentimetres and metres just don’t cut it when referring to astronomical scales. For studies of our Solar System, a more useful unit is the Astronomical Unit (au or AU). This is defined as the average distance

the-actual-universe: Astronomical UnitsCentimetres and metres just don’t cut it when referring to astronomical scales. For studies of our Solar System, a more useful unit is the Astronomical Unit (au or AU). This is defined as the average distance

tags: Things of interest ♥,

from: https://beautifuldani.tumblr.com/post/131036907283