Mercury – the innermost planet

The planetary orbit of Mercury, the planet closest to the Sun, is a fascinating phenomenon that has puzzled astronomers for centuries. The peculiarities in its orbit can be attributed to a combination of factors, including its proximity to the Sun, its shape, and the effects of general relativity. Histrorical background The earliest recorded observations of Mercury are attributed to the ancient Babylonians, who observed the planet around 2000 BCE and named it after their god of commerce, Nabu.