Even though Venus moves between the Earth and sun every 19.5 months, it becomes visible after sunset and before sunrise only ...

Another theory, dating from the 1970s, states that Venus didn't switch its rotation but flipped its poles. In a nutshell, ...

Schematic illustration on how the super-rotation of Venus' atmosphere is maintained. In the cloud layer of Venus, a vertical and north-south circulation, called the meridional circulation ...