The ancients only knew about (5 planets + Earth) because to really see the other two you needed a telescope. The planets they knew were:
# Mercury # Venus # (Earth) # Mars # Jupiter # Saturn All these are easily visible to the naked eye and of cause they can be seen to move against the background of the stars (except the Earth because we are on that)
It was in 1718 (290 years ago) that Uranus the 7th planet was discovered by William Herschel using a telescope. Although it is visible to the naked eye like the other six, it was never recognized as a planet by ancient observers due to its dimness and slow orbit. The 8th planet Neptune was found by mathematical prediction rather than regular observation. Unexpected changes in the orbit of Uranus led astronomers to deduce the gravitational perturbation of an unknown planet was the cause and they predicted where to look to find it.
Ancient astrologers only knew about 5 planets plus Earth. They knew about the 5 planets from visual observation.Furthermore, there are only 8 planets in our solar system.
Ptolemy only knew 5 planets other than the Earth:MercuryVenusMarsJupiterSaturnThe reason is that these planets are visible with the naked eye. Also, keep in mind that most people in the ancient world didn't know that the Earth was a planet.
Ancient India discovered only 5 planets without a telescope, because they could see the planets with their eyes, just as we can. Those planets are:MercuryVenusMarsJupiterSaturn
i only know two planets the to planets are pegasus 51b and the niburu
Earth is the only planet NOT named after a god.
the only planet i know that's bigger then dwarf planets is Jupiter.there are others.
Yes, only on the Earth. We don't know if the other planets have life
during the ancient times river was the only source of water for the people. so they settled near around the river only. the civilizations that flourished in the river valleys are called river valley civilization.
No, only on Earth How do you know selfish
The inner planets all have craters on them. Only Earth has any life that we know of.
I don't have any of the ancient Latin names, but I must jump in here andpoint out that before 1781, only six planets were known.The existence of Uranus, Neptune, and Pluto could not be established withoutNewton's work and without the telescope.
Only one that we know of ... ours. Of the planets that we do know of (our solar system AND extra-solar) none are habitable (by Earth life). But, the probability that there are at least a few other habitable planets in our galaxy is excellent.
The Earth has only one natural satellite. No other planets in this solar system have one and only one moon. We know very little about the 2000+ extra-solar planets; it's amazing enough for us to be able to know that there ARE other planets. It's likely enough that many or most of those planets have one or more moons, but we don't yet know how many or which ones.
I know only of other galaxies and belt of kuiper
many advanced civilizations are said to be there not only in India but all over the world but not much of it is left anymore
there is only one planet not named after roman deities: Earth
As far as we know, only Planet Earth. There may be another planet that we don't know of though.
because the god made it, we don't know why the planets has 8 moons only:
So far we know of only one planet that is habitable.
No, there are only humans on Earth as far as we currently know.
it is the only one we know about that contains life at the moment.
It is the only planet that we know of that contains life.
I know of only two, Pluto and Sedna.
In nothing. These ancient civilizations (Mayans, Aztecs) were completely wiped out by the invading armies of Spanish conquistadors. They only contributed during colonial times in the form of slave labor, but by 1550 most of them were dead or being assimilated into the larger population.