Retrograde motion is the apparent backward movement of a planet across the sky, as observed from Earth. This optical illusion occurs when Earth, traveling in its orbit, overtakes an outer planet like Mars, making the planet appear to reverse direction temporarily against the backdrop of stars.
Source: apod.nasa.gov

30/05/2025

15/04/2023

12/12/2020

08/11/2018

29/09/2018

15/09/2016

28/10/2014

09/08/2012

13/06/2010

11/05/2008

05/02/2008

07/04/2007

22/04/2006

07/01/2005

16/12/2003

20/12/2001