A rare triple conjunction of Venus, Mars and Mercury is happening on the opposite side of the solar system to where Earth is, ...

Mercury, the innermost planet of our Solar System, exhibits a uniquely dynamic magnetosphere that, despite its relatively weak intrinsic magnetic field, undergoes rapid and complex interactions with ...

A stunning "parade of planets" will grace the night sky this week, with all seven of Earth's celestial neighbors joining the show. Here's how to spot it and why it happens. When you purchase through ...