Ancient Greek philosopher Aristotle once picked up his writing implement and noted the presence of “two mock suns.” In the ...

Mercury currently appears as a bright "evening star" in the southwestern sky at sunset. Mercury will reach its greatest eastern elongation on Oct. 29, marking one of the best evenings to see the ...

Sky This Week is brought to you in part by Celestron. Friday, December 5Saturn's far-wandering moon Iapetus reaches superior ...

Pilots flying over the Himalayas often see three suns at once, a stunning phenomenon called sundog. This natural light show ...