Rhythms of the Cosmos – A Guest Post by Dr Andrew Fletcher

Mars in retrograde from Earth

The position of Mars changes between January (right) and September (left) 2016, with respect to the background constellations. The occasional retrograde (or doubling-back) motion of the planets confused astronomers for millennia. (Image credit: NASA)

The position of Mars changes between January (right) and September (left) 2016, with respect to the background constellations. The occasional retrograde (or doubling-back) motion of the planets confused astronomers for millennia. (Image credit: NASA)

Bookmark the permalink.

Leave a Reply

Your email address will not be published.