Look at what each planet needs to complete a cycling of the sun.

This shadow was created by Phobos, a satellite of Mars. Photo captured and sent by perseverance Phobos is 150 times smaller than our Moon and 50 times closer to Mars. Because it is so close, Phobos will crash into Mars...

Although this is an uncrew mission, the image features a dummy commander, a tribute to NASA engineer Arturo Campos, who was instrumental in bringing the Apollo 13 mission crew safely back to Earth.