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These are the classical planets, those that you can see without a telescope. These are Mercury, Venus, Mars, Jupiter and Saturn. they could be seen to be different to the stars, since they changed positions gradually in relation to the other stars (as they orbit the sun)

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Q: How many planets were known to the Greeks?
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Related questions

What did Greeks and Romans name planets after?

They named the planets after their gods.


What year did the Greeks find the 5 planets?

The Greeks did not 'find' five planets. The Earth and theother five visible planets have been visible on any clear night for as long as humans have walked the Earth. They were known to any caveman with normal vision, a touch of insomnia, and enough brain cells to be interested in the things he saw in the sky.


How many planets in the Earth?

The earth is a planet, it has no known planets within.


What did ancient Greeks belevied in monotheism or polytheism?

The Greeks were polytheistic. They had many gods, including the gods that the planets (including Pluto) other than Earth were named after.


How many known planets were there in 1791?

MercuryVenusEarthMarsJupiterSaturnUranus


Why did the ancient Greeks name planets gods?

I think the Romans named the planets after their gods.


How many planets in your univerese?

The number of planets is not known. The number of stars is not known either, nor if all have planetary systems. Certainly many billions of billions.


How many planets does the comet galaxy have?

It is not generally known how many planets are in each galaxy; it isn't even known how many planets are in our own galaxy, and will probably never be known exactly, due to its enormous size. However, according to latest observations, it seems likely that every star has several planets, at least on average.


How many basic planets are there?

Currently there are 353 known extrasolar planets (that is to say, outside of our solar system), but it is unknown how many planets exist in the universe.


How many stars with planets?

There are more than 300 known stars with known planets, and the list gets longer all the time.


How do planets get greek names?

planets were named as discovered, so when the Greeks found them the were named with greek,


How many planets were there in 1776?

There were 6 known planets, Uranus and Neptune weren't discovered yet.