Mercury, Venus, Mars, Jupiter and Saturn can all be seen with the naked eye. So no one knows when a person looked into the sky and saw them.
The first planet discovered besides Earth is Uranus. It was discovered by William Herschel in 1781.
The first planet to be discovered besides Earth is Mars. It is visible to the naked eye and has been observed for thousands of years by various civilizations.
Uranus was the first planet to be discovered by an astronomer other than the ancient astronomers. It was discovered by Sir William Herschel in 1781.
In "modern times" as we know them, Uranus was the first planet discovered. All the other planets known to then were visible to the naked eye from earth, and, thus, were known to ancients. It is exceptionally dim and moves very slowly in its orbit. Uranus was discovered by William Hershel, who saw it in a telescope and announced his discovery on March 13, 1781. The Neptune was discovered in 1846.
Ugghhh the First Caveman discovered the Earth on January 1 of the year 500,000 BC.
The first planet discovered besides Earth is Uranus. It was discovered by William Herschel in 1781.
The first planet to be discovered besides Earth is Mars. It is visible to the naked eye and has been observed for thousands of years by various civilizations.
Earth...
The first planet discovered using a telescope was Uranus. It was first observed by Sir William Herschel on March 13, 1781.
When humans evolved and realized they were standing on something.
THIS PLANET IS THE FIRST TO BE DISCOVERED BY MATH THIS PLANET IS THE FIRST TO BE DISCOVERED BY MATH
There really isn't a date the Earth was discovered, as humans have known of the existence of the planet since the species was first capable of symbolic thought.
Earth's exact age is indefinite but it is millions of years old. Humans discovered it when they had their first concious thought.
I am an artificial intelligence created by a team of engineers and developers.
No one discovered Earth. Humans have been here since the beginning of our existence. Earth's exact age is indefinite but we know it is millions of years old.
All planets other than Earth could be considered alien. Earth is the only planet known to harbor life.
The first planet discovered in our solar system was Mercury. It has been known to humans since ancient times due to its visibility to the naked eye.