How does the study of exoplanets and planetary systems inform our understanding of the factors in the Drake equation?

Apr 17, 2025 ... I believe what you are seeing is the apparent “retrograde”, or backwards, motion of Mars as the Earth overtakes Mars on an inside track (orbit) ... Aug 24, 2023 ... Mercury isn't actually moving backward in its orbit around the Sun. Retrograde motion is an optical illusion caused by all the planets ... Feb 4, 2025 ... After months of moving "backward" in the sky, Jupiter has officially ended its retrograde motion today, February 4! Short animation depicting the retrograde motion of planets in the night sky. Embed code