It depends where you are. Some planets can be seen overhead at different times at latitudes up to about 24 or 25 degrees, but at higher latitudes they are never overhead. They are highest in the sky at midnight in the winter. At that time they are passing through the constellations of Taurus and Gemini when seen from the northern hemisphere, or Ophiuchus and Sagittarius from the southern hemisphere. That applies to all eight planets.
It was known to the ancients, and Ptolemy's model allows for the variations in speed.
The existence of Mars has been known since antiquity. Ancient astronomers noted that Mars was one of the celestial bodies which does not bear a constant relation to the others. These moveable bodies were called planets, and the ancients were aware of the following planets which can be seen with the naked eye--Mercury, Venus, Mars, Jupiter and Saturn.
Jupiter, Saturn, Uranus and Neptune.
Jupiter Saturn Uranus and Neptune.
These four planets are known as the 'Gas Giant' planets.
Both Venus & Mercury.
Both Venus & Mercury.
These planets known to the ancients. Mercury Venus Earth Mars Jupiter And Saturn, if you don't count Earth.
It wasn't known for anything to the ancients, since it wasn't known to the ancients. Germanium was discovered in 1886.
It was known to the ancients, and Ptolemy's model allows for the variations in speed.
It's impossible to know. It was known by the ancients.
cuneiform
it was known to ancients
it was known by the ancients but the year is not specified
Yes because they are rocky planets and the outer planets are known as the gas planets.
The triangle was known to ancients, and its origin is lost in history.
The inner planets are known as terrestrial planets because they are rocky like earth