Our satellite hangs out with the heart of the Scorpion, known for its vivid red hue as the Rival of Mars in our sky.

Discover why Earth's farthest distance from the sun coincides with summer heat, then grab your binoculars for a week of ...

An astronaut aboard the International Space Station has shared a striking photo of what is known as a Transient Luminous ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...