Three celestial bodies are preparing to meet up for one night in September in a cosmic party that should be widely visible in the sky. What makes the close approach of the objects so special this time ...

Venus has a core that is approximately 7000 kilometres in diameter – about the same size as Earth’s – according to the first observation-based estimate. Studying Venus is notoriously difficult owing ...

Early risers are in for a spectacular show next week, when Jupiter, Venus and Mercury form a planetary lineup in the predawn sky on Sept. 1. Look above the eastern horizon in the hours preceding dawn ...

Three celestial bodies will be meeting up for one night in September in a cosmic party that should be widely visible in the sky, including in Kentucky. What makes the close approach of the objects so ...