What is a planetary retrograde? And what connection does it have to astrology? We explain how planets move across the sky.
Mercury, the smallest planet in the solar system, holds an outsized secret that some researchers believe could reshape how humans think about expanding into space. With an iron core that dominates its ...
Mercury has long been cast as the solar system’s burnt-out rock, a relic too small and too close to the Sun to hold many ...
Of the eight known planets in the Solar System, Mercury is the smallest and closest to our star, the Sun. Mercury has been known since the time of ancient Babylon, in the 14th century BC. Its name ...
Mercury, Venus, Jupiter, and Saturn—will be visible to the naked eye. Uranus and Neptune, being much farther away, will ...
From dazzling Jupiter high in the evening sky to elusive Mercury low at sunset, February 2026 offers one of the year's best planetary lineups.
A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, ...
Mercury is the smallest planet in our solar system. Explore its size, extreme temperatures, core structure, and comparison with Pluto.