Would you consider Venus to be a comet or ex-comet. Here are some supporting points.
1)Ancient records do not include the planet Venus, only Mars, Jupiter, Saturn, and Mercury. The Ancients say a new “star” was born of fire with horns(the tail of the comet), and became the morning and evening star
2)Venus’ carbon dioxide atmosphere does NOT account for a surface temperature of 900 degrees F. It simply cannot be that efficient. Venus could be extremely hot from it’s days as a comet.
3)Comet usually have elliptical orbits, but some, such as Whirtannen have near circular orbits around the Sun.
4)Venus has NO magnetic field. This is extremely strange, since Mercury, Earth and Mars have or once had a global magnetic field. Venus should be protected by one to this day.
5)Venus DOES have at tail. In the ultraviolet, a stream of ions can be seen torn from Venus atmosphere by the oncoming solar wind. Venus loses much atmospheric mass in this manner.
Just a thought, but it’s possible