Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

On Jan. 6, when Saturn passes closest to the south-southeast of 20 Psc, it is equidistant from 20 and 24 Psc, 0.9° from each.

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...