The planets are visible throughout February, "but they’ll be lined up best toward the end of the month,” NASA says.

Lunar-based measurements reveal Earth’s outgoing radiation is dominated by low-order spherical harmonics, providing unified global data for climate and environmental studies ...

But unlike Jupiter, Venus does have phases, going from not illuminated at all (when it is between the Earth and the Sun) to ...

From images taken by NASA spacecrafts, this picture mosaic was created of six of the planets in our solar system and the Earth's moon. In the foreground is the Earth rising over the lunar surface with ...

The internet has been abuzz with the possibility of sky watchers seeing a “smiley face” in the eastern sky above the horizon on Friday morning before dawn. Just so you know, some of the graphics used ...