Mercury retrograde is, more or less, an optical illusion. Yet it holds great weight in astrology. Here's how it might affect your sign.

Its radius, the distance from the core's centre to the surface, is 2,440 kilometres. Mercury is about 2.6 times smaller than Earth. How hot is Mercury? Mercury's sun-facing side is scorched by ...

From an astrological point of view, there are hardly two words that elicit a stronger reaction than Mercury retrograde.

From March 5 through March 10, Mercury will set at, or shortly after the end of evening twilight, more than 1 hour 30 minutes ... placing the sun and not the Earth at the center of our solar ...

Narrator: As the solar system grew, four rocky planets: Mercury, Venus, Earth and Mars ... They are much smaller than the gas planets and rotate more slowly.

This is the only known star with a multi-planet system entirely comprised of planets smaller than Earth. The innermost planet ...

The Sun and its planets – Mercury, Venus, Earth, Mars, Jupiter ... be strong enough to ‘clear the neighbourhood’, pulling smaller nearby objects into its orbit.