Search found 1 match
- Thu Aug 09, 2012 4:27 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mars in the Loop (2012 Aug 09)
- Replies: 34
- Views: 6097
Re: APOD: Mars in the Loop (2012 Aug 09)
Why is the track of the retrograde motion a loop? Doesn't Mars stay in the same plane? I would think the track would be a straight line with overlap during the retrograde period... Mars stays in the same plane, and Earth stays in the same plane... but they are different planes. So our relative &quo...