2 ms·
That's because earth can be viewed as a plane. The galaxy can't, you need a median.
by hanniabu 7y ago
That's because earth can be viewed as a plane. The galaxy can't, you need a median.
- ajuc 7y ago1. Milky Way is much more like a plane than Earth 2. it doesn't matter anyway any object which rotates can have direction named basing on that rotation