Skygazers around the world were treated to a once in a lifetime experience on Monday, when the great conjunction of Jupiter and Saturn formed what has been dubbed a Christmas Star. Photos from the ...

A conjunction is an astronomical event in which at least two planets – or, in this case, other celestial bodies – appear to our vantage from Earth to be close together in the sky. The trio of ...

This Thursday evening, look to the western skies as Jupiter and Venus—the two brightest planets to the unaided eye—stage a close encounter over the Northern Hemisphere. Though the two planets will ...