Summer nights mean late sunsets and lingering twilight, hardly a recipe for great night-sky observing ... 4.7 during January, far surpassing any other planet or star. Venus reaches greatest ...

Always bright and reliable Jupiter remains prominent for the first half of night in the western sky. Meanwhile, Mars continues to cavort with the twin stars of Gemini, Pollux and Castor through ...

Astronomers measure distances to the stars in terms of light years, units that combine time and distance. One light year is the distance light travels in one year; so if you look at a star ten ...