looking in his telescope
None. Mercury was discovered before spacecraft were invented.
Planet Mercury was not discovered, it has been known to exist for thousands of years.
Mercury has no moons.
The ones who discovered the element Mercury were the ancients
No one can really say who founded or who discovered Mercury but it is said that it was discovered nearly 3000 years ago.
The ones who discovered the element mercury were the ancients
No natural satellites of Mercury have been discovered.
mercury
1689
The planet Mercury was discovered around 3,500 years ago, Unfortunately the name of the person who discovered it was not recorded.
NOPE
Mercury was discovered visually by looking at the sky shortly before sunrise or shortly after sunset. It was discovered in antiquity.