On Tuesday, the sun rose in Utqiaġvik, Alaska, for the first time since November—but only for a whopping 48 minutes before it set again. The sun appeared around 1:15 p.m. and disappeared just after 2 ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you identify them.

Watch a bright Moon dominate the sky, trace the Winter Hexagon, and continue enjoying the evening parade of planets in the ...

The sun will rise above the horizon around noon, ending nearly two months of polar ... The border of the polar night lies just north of the Arctic Circle in Finland.

The full moon occurs when the moon is directly opposite the sun from ... about 14 degrees above the northwestern horizon. Mars emerges from behind the moon at 5:20 a.m. just as the moon is setting.

Mercury's appearance Mercury can be tough to spot because it's closest to the sun. On February 28, though, it will start to peek above the horizon just after sunset, then rise to meet Venus in ...