Amazed skiers thought they discovered a portal to another dimension when they saw a flame-shaped atmospheric phenomenon known as a "subsun" or "sun candle" this week at SkiWelt Wilder Kaiser in ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the ...

Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its ...